ПОВОРОТНОЕ УСТРОЙСТВО

Изобретение относится к поворотному устройству (10) для обеспечения вращательного движения между стрелой крана и гидравлическим инструментом. Поворотное устройство содержит первую крепежную часть (15), выполненную с возможностью прикрепления к стреле крана, вторую крепежную часть (16), выполненную с возможностью прикрепления к навесному орудию, корпус (20), соединяющий первую крепежную часть (15) со второй крепежной частью (16). Корпус (20) выполнен с возможностью выдерживать нагрузки гидравлического инструмента и содержит подшипник (18), позволяя первой части корпуса вращаться относительно второй части корпуса, и гидравлический двигатель (11) вращения, выполненный с возможностью обеспечения вращательного движения между первой и второй крепежными частями (15, 16) вокруг оси вращения (А), причем двигатель содержит статор (13) и ротор (12). Ротор (12) расположен внутри статора с возможностью вращения относительно статора (13) вокруг той же оси вращения (A), как и первая и вторая крепежные ...

Система гидроприводов с резервированным контуром управления растормаживанием нагрузки

Изобретение относится к области машиностроения. Система гидроприводов с резервированным контуром управления растормаживанием нагрузки состоит из прибора управления, двух гидроприводов с последовательно соединенными электродвигателем, регулируемым насосом, подпиточным насосом, подпорным клапаном подпитки, обратными подпиточными клапанами, силовыми гидролиниями, гидромотором, фрикционным тормозом, редуктором гидромотора. Каждый гидропривод снабжен гидроцилиндром фрикционного тормоза, являющимся гидроцилиндром одностороннего действия с пружиной, управляемым электрогидравлическим распределителем. Последний запитывается через обратные клапаны растормаживания, установленные в силовых гидролиниях, и управляется прибором управления гидроприводом. Гидроцилиндр фрикционного тормоза соединен с электрогидравлическим распределителем через клапан «ИЛИ». Гидроприводы соединены гидролиниями растормаживания, подключенными перекрестно к входам каждого клапана «ИЛИ». Повышается надежность работы контура растормаживания ...

ГИДРАВЛИЧЕСКАЯ ПРИВОДНАЯ СИСТЕМА (ВАРИАНТЫ), КРАН, МОБИЛЬНОЕ ТРАНСПОРТНОЕ СРЕДСТВО, СПОСОБ ЭКСПЛУАТАЦИИ ГИДРАВЛИЧЕСКОЙ ПРИВОДНОЙ СИСТЕМЫ И СПОСОБ ПРИВОДА УСТРОЙСТВА ЧЕРЕЗ ГИДРАВЛИЧЕСКУЮ СИСТЕМУ

... 1. Гидравлическая система для привода устройства (6), содержащая приводной блок (10), выполненный с возможностью привода устройства (6) через первичный гидравлический контур из первой и второй гидравлических вытеснительных машин (1, 2), третью гидравлическую вытеснительную машину (3), выполненную с возможностью соединения или соединенную для передачи механической энергии с устройством (6), и аккумулятор (5) высокого давления, гидравлически соединенный или выполненный с возможностью соединения с третьей гидравлической вытеснительной машиной (3), отличающаяся тем, что аккумулятор (5) высокого давления выполнен с возможностью зарядки через гидравлическую вытеснительную машину, соединенную или выполненную с возможностью соединения для передачи механической энергии с приводным блоком (10). ! 2. Система по п.1, отличающаяся тем, что аккумулятор (5) высокого давления выполнен с возможностью зарядки через первую гидравлическую вытеснительную машину (1). ! 3. Система по п.1, отличающаяся тем, что ...

СОЕДИНИТЕЛЬНОЕ И РАЗЪЕДИНИТЕЛЬНОЕ УСТРОЙСТВО МУФТЫ СЦЕПЛЕНИЯ

Соединительное и разъединительное устройство муфты сцепления включает в себя педаль сцепления, цилиндр муфты сцепления, механизм передачи силы нажатия и актуатор. Механизм передачи силы нажатия включает в себя разделительный механизм, который соединяет и разъединяет тракт передачи силы нажатия механизма передачи силы нажатия. Разделительный механизм включает в себя входной поршень, выходной поршень, первую масляную камеру и расширительный бачок. Электромагнитный клапан имеет возможность устанавливать соединение или разъединение между первой масляной камерой и расширительным бачком. Актуатор установлен с возможностью передавать мощность в выходной поршень разделительного механизма. 7 з.п. ф-лы, 11 ил.

ПОДВОДНАЯ СИСТЕМА ПРИВОДА

Изобретение относится к области подводного бурения. Подводная система привода для бурения, добычи или переработки содержит электродвигатель с регулируемым числом оборотов, выполненный с возможностью подведения электропитания, реверсивный гидравлический насос, приводимый в действие двигателем, гидравлическую поршневую компоновку, соединенную с насосом и содержащую первую камеру, вторую камеру и поршень, разделяющий первую и вторую камеры и выполненный с возможностью приведения в действие клапана в подводной системе, резервуар текучей среды, соединенный с насосом и гидравлической поршневой компоновкой, и компенсатор давления. Насос, гидравлическая поршневая компоновка и резервуар соединены, по существу, в замкнутую гидравлическую систему. Обеспечивается возможность нормализации разности давлений между давлением снаружи и внутри гидравлической системы. 23 з.п. ф-лы, 10 ил.

КЛАПАН УПРАВЛЕНИЯ РАСХОДОМ, СОДЕРЖАЩИЙ УСТРОЙСТВО ПРЕОБРАЗОВАНИЯ ДВИЖЕНИЯ

ПРИВОДНОЕ УСТРОЙСТВО

ГИДРАВЛИЧЕСКАЯ ПЕРЕДАЧА

Полезная модель относится к станкостроению и транспортному машиностроению, а именно к горнодобывающим, строительно-дорожным машинам и приводам вспомогательных агрегатов, более конкретно - к закрытого типа гидросистемам. Целью полезной модели является создание закрытой гидропередачи, обеспечивающей поддержание давлений в заданном диапазоне. Поставленная цель решается тем, что гидравлическая передача, содержащая образующие замкнутый гидрообъемный контур насос, выполненный с одним направлением потока, предохранительный клапан, сообщающий напорную гидролинию, подключенную к насосу, со сливной гидролинией, подключенной к гидробаку, выполненному герметичным, фильтр, связывающий выход насоса с распределителем, который выполнен четырехходовым трехпозиционным с соединением напорной гидролинии со сливной гидролинией в одной из позиций, а к рабочим отводам распределителя подключен гидроцилиндр с двумя направлениями потока, пневмогидроаккумулятор с заправочным устройством, где после пневмогидроаккумулятора ...

Гидравлический привод для периодически перемещаемого элемента

HYDRAULISCHE STEUERVORRICHTUNG FÜR EINEN DOPPELT WIRKENDEN ZYLINDER

Fahrradsteuervorrichtung

Eine Fahrradsteuervorrichtung wird im Wesentlichen bereitgestellt mit einem Halter, einer Schalteinheit, einer hydraulischen Zylindereinheit und einem ersten Betätigungsglied. Der Halter schließt einen Koppelabschnitt ein, welcher ausgestaltet ist/wird, um an einer Lenkstange gekoppelt zu sein/werden. Die Schalteinheit ist/wird am Halter montiert. Die hydraulische Zylindereinheit ist/wird am Halter an einem Ort montiert, welcher näher hin zum Koppelabschnitt als die Schalteinheit ist. Das erste Betätigungsglied ist/wird schwenkbar in Bezug auf den Halter um eine erste Schwenkachse herum montiert, um die hydraulische Zylindereinheit zu betätigen. Die erste Schwenkachse ist/wird zwischen der Schalteinheit und dem Koppelabschnitt angeordnet.

Hydraulisch gesteuerte Vorrichtung zum Ferneinstellen von Richtantennen

Geberzylinder und Verfahren zur Montage eines Geberzylinders

Der erfindungsgemäße Geberzylinder, insbesondere für ein hydraulisches Betätigungssystem einer Reibungskupplung, insbesondere in einem brennkraftmaschinenbetriebenen Fahrzeug, umfassend einen Zylinder mit einem Kolben mit Kolbenstange, der in einem Gehäuse in Richtung einer Bewegungsachse bewegbar ist, zeichnet sich dadurch aus, dass eine Anschlagkappe ausgebildet ist, die eine Öffnung aufweist, durch die die Kolbenstange bewegbar ist, wobei die Anschlagkappe außenseitig mit dem Gehäuse verbunden ist und die Beweglichkeit des Kolbenstange in eine Richtung der Bewegungsachse begrenzt. Der hier diskutierte Geberzylinder ermöglicht in vorteilhafte Weise eine einfache Montage der Kolbenstange im Gehäuse bei gleichzeitiger Bildung eines entsprechenden Anschlagsbereichs. Im Vergleich zu als bekannt angenommenen Lösungen kann der Geberzylinder in Richtung der Bewegungsachse kürzer bauen, da auf den Einsatz einer Halteklammer und eine entsprechende Verlängerung des Gehäuses aus Festigkeitsgründen ...

VORRICHTUNG ZUR BEFESTIGUNG VON PERFORIERLINIEN AN ZYLINDERN BEI DRUCKMASCHINEN.

To produce perforated lines across the width of webs of paper a cylinder of a rotary printing machine is equipped with a slot across in which a suitable rule or cutter blade is clamped by a clamping strip. The strip has a number ofblind bores, joined by a channel and equipped with plungers. The pressure is exerted by a thermoplastic elastomer which is filled in the channel and cylinder as a liq. and which is pressurised by a sealed thrust screw.

Hydraulischer Geberzylinder zur hydraulischen Betätigung einer Kupplung

Die Erfindung betrifft einen hydraulischen Geberzylinder (1) zur hydraulischen Betätigung einer Kupplung, umfassend ein Gehäuse (2), einen Anschlussstutzen (10), der am Gehäuse (2) des Geberzylinders (1) ausgebildet ist, und eine Niederdruckleitung (3) für Hydraulikflüssigkeit. Ein konischer und radial umlaufender Wulst (12) ist am Anschlussstutzen (10) ausgebildet und dient zur Befestigung der Niederdruckleitung (3) für Hydraulikflüssigkeit am Geberzylinder (1). Ein Halteelement (20) ist vorgesehen, das den Anschlussstutzen (10) umgibt und auf dem Gehäuse (12) aufsitzt. Ein Fixierelement (30) ist an einem freien Ende (3E) der Niederdruckleitung (3) vorgesehen und nimmt das freie Ende (3E) auf, wobei das Fixierelement (30) zusammen mit der Niederdruckleitung (3) im Halteelement (20) klemmend und verrastend gehalten ist.

Selbsttaetige Steuerung fuer Druckluft-Hilfsantriebe

Verfahren zum Betreiben eines hydraulischen Antriebs

Die Erfindung betrifft ein Verfahren zum Betreiben eines hydraulischen Antriebs der eine von einem drehzahlvariablen elektrischen Motor (110) angetriebene hydraulische Pumpe (120) und einen mit der hydraulischen Pumpe (120) verbundenen hydraulischen Verbraucher (130) mit einem positionierbaren Element umfasst, wobei eine Position des positionierbaren Elements des hydraulischen Verbrauchers (130) mittels eines Positionsreglers (220) über eine Drehzahl des elektrischen Motors (110) als Stellgröße geregelt wird, wobei ein an dem positionierbaren Element des hydraulischen Verbrauchers (130) anliegender Druck oder eine durch das positionierbare Element des hydraulischen Verbrauchers (130) ausgeübte Kraft mittels eines Druck- bzw. Kraftreglers (210) geregelt wird, und wobei eine vorgegebene Drehzahl des elektrischen Motors (110) mittels Vorgabe einer Spannung (U) und/oder einer Umlauffrequenz (f) eines Feldes eines Stators des elektrischen Motors (110) eingestellt wird.

Elektrohydraulisches System für die Betätigung von Mehrfachkupplungen und Gangstellern mit hochgenauer Regelung von mehreren Schaltgetriebeeinheiten gleichzeitig

Ziehender Rollmembran-Zylinder ohne Zugankerkonstruktion mit innerem und äußerem Rollbereich

SCHEIBENSCHNEIDMASCHINE, INSBESONDERE FUER FLEISCHEREIBETRIEBE

Air bleed valve for hydraulic system of motor vehicle, has sealing element that closes outlet opening in rotary position of housing for air flow in direction of fluid channel, by prestressing of sealing element

The valve (10) has a sealing element e.g. O-ring, prestressed relative to a fluid channel. The element is compressed by a housing for closing the channel in an axial direction with respect to an outlet opening of the channel, in a rotary position of the housing. The element is released by the housing in the axial direction, in another rotary position of the housing. The element closes the opening in the latter position for air flow in a direction of the channel, by prestressing of the element. The element opens the opening for air flow in a direction of the housing.

WECHSELSTROMHYDRAULIKANLAGE

Geberzylinder

Die Erfindung betrifft einen Geberzylinder. Anwendung findet die Erfindung innerhalb hydraulischer Systeme, insbesondere von Kupplungs- oder Bremsbetätigungssystemen, im Automobilbau. Um einen einfach aufgebauten, kostengünstig herstellbaren sowie unkompliziert montier- und demontierbaren Geberzylinder bereitstellen zu können wird vorgeschlagen, dass das Gehäuse mit zwei sich gegenüberliegenden Querbohrungen ausgestattet ist, die jeweils mit einer in der Mantelfläche der Abdeckung vorgesehenen Ausnehmung fluchten, wobei in der jeweiligen Querbohrung und Ausnehmung ein Stift angeordnet ist.

Hydraulisches Steuer- und Stellsystem mit Volumenausgleich

Hydraulisches Steuer- und Stellsystem mit mindestens einem Hydraulikzylinder (1), in dem ein Zylinderkolben (3) bewegbar ist, der den Hydraulikzylinder (1) in eine kolbenseitige Stelldruckkammer (4) und eine kolbenstangenseitige Stelldruckkammer (5) trennt, und einer Hydropumpeneinheit (2), wobei ein erster Anschluss (10) der Hydropumpeneinheit (2) an einer ersten Anschlussseite (6) mit der kolbenseitigen Stelldruckkammer (4) verbunden ist, wobei ein mit dem ersten Anschluss (10) einen geschlossenen hydraulischen Kreislauf (39) bildender zweiter Anschluss (12) an einer zweiten Anschlussseite (78) mit der kolbenstangenseitigen Stelldruckkammer (5) des Hydraulikzylinders (1) verbunden ist, wobei ein dritter Anschluss (11) mit der kolbenseitigen Stelldruckkammer (4) des Hydraulikzylinders (1) zur Ver- und Entsorgung der kolbenseitigen Stelldruckkammer (4) mit einer der Hydraulikfluidmengendifferenz zwischen kolbenseitiger Stelldruckkammer (4) und kolbenstangenseitiger Stelldruckkammer (5) ...

Hydraulic drive for cam setting in IC engine - has hydraulic pump driven by reversible DC motor and separated from pump by non return valves cross linked to other feed lines.

The relative setting of the cam and the camshaft for each cylinder, is controlled by a hydraulic servo cylinder (15) connected to both sides of a constant output hydraulic pump (10). The pump is driven by a reversible DC motor (11) and the servo is separated from the pump by non return valves (26, 28). The motor is a permanent magnet DC motor. The non return valves are cross linked to the other feed lines for pressure control and for return feed of fluid. A control valve (35) controls the return flow to the sump (38) as well as the pump take-up from the sump. ADVANTAGE - Power saving pump only operated when required. Variable cam setting control. Reduced power loss, so reduced exhaust emissions.

Nehmerzylindersystem mit exzentrisch angeordneter Ringkolbeneinheit

Die Erfindung betrifft ein Nehmerzylindersystem (1) zum Betätigen zweier Kupplungen, mit einer ersten Betätigungsteileinheit (2), die einen ersten Gehäusebereich (3) und eine erste Kolbeneinheit (4) aufweist, wobei der erste Gehäusebereich (3) und die erste Kolbeneinheit (4) zumindest einen ersten Druckraum (5) ausbilden, in dem ein Kolben (6) zum Verstellen eines ersten Betätigungslagers (7) axial verlagerbar angeordnet ist, und mit einer zweiten Betätigungsteileinheit (8), die einen zweiten Gehäusebereich (9) und einen Ringkolben (10) aufweist, wobei der zweite Gehäusebereich (9) und der Ringkolben (10) einen zweiten Druckraum (11) ausbilden, in dem der Ringkolben (10) zum Verstellen eines zweiten Betätigungslagers (12) axial verlagerbar angeordnet ist, wobei der Kolben (6) der ersten Kolbeneinheit (4) als Ringkolben ausgebildet ist exzentrisch zu dem Ringkolben (10) der zweiten Betätigungsteileinheit (8) angeordnet ist.

Hydraulikzylinder, insbesondere Nehmerzylinder für eine hydraulische Kupplungsbetätigung für Kraftfahrzeuge

Ein Hydraulikzylinder (10) hat ein Zylindergehäuse (18), in dem ein Druckraum (20) ausgebildet ist, der auf einer Seite variabel von einem längsverschieblich im Zylindergehäuse aufgenommenen Kolben (14) einer Kolbenbaugruppe (12) begrenzt ist, die eine starr mit dem Kolben verbundene Kolbenstange (16) aufweist, wobei der Kolben eine Außenkontur (24) hat, die ein Verkippen der Kolbenbaugruppe im Zylindergehäuse gestattet, und einen druckraumseitigen Fortsatz (26) besitzt, auf dem vermittels eines Halterings (28) ein Dichtelement (30) zentriert gehalten ist, das mit einer umlaufenden Dichtlippe (32) gleitfähig und dichtend an einer Lauffläche (34) des Zylindergehäuses anliegt. Der Haltering ist auf seiner vom Dichtelement abgewandten Seite mit einer ausgesteiften Verlängerung (44) versehen, die in Länge und/oder Durchmesser angepasst ist, bei einem Verkippen der Kolbenbaugruppe im Zylindergehäuse jedenfalls dann an der Lauffläche zur Anlage zu gelangen, um die Kolbenbaugruppe am Zylindergehäuse ...

Hydrostatisches System bestehend aus einer hydraulischen Verstellpumpe und einem mit dieser verbundenen hydraulischen Motor

Operating device for e.g. friction clutch of motor car, has actuator comprising piston, which is moved in actuator direction, where actuator actuates master cylinders by movement in actuator direction and moves master cylinders

The device (1) has a set of hydraulic systems (4, 8) with master cylinders (5, 9), which are connected with slave cylinders (6, 10) over hydraulic connection units (7, 11). An actuator (12) comprises a piston (13), which is moved in actuator directions (14, 15), where the actuator actuates the master cylinders by the movement in the actuator directions. The actuator moves the master cylinders in the actuator directions, and a throttle is fixed in each hydraulic connection unit for throttling flow of hydraulic fluid (20) from the slave cylinders to the master cylinders. Independent claims are also included for the following: (1) a method for operating clutch systems by an operating device (2) a friction clutch for a motor car.

Hydraulikeinrichtung zur ventillosen Betätigung von Kupplungen an Umformmaschinen

Hydraulikeinrichtung für eine Kupplung, die vorzugsweise für eine Umformmaschine ausgelegt und/oder vorgesehen ist, mit einem ersten Hydraulikzylinder (1) und einem zweiten Hydraulikzylinder (4), die über eine ein Hydraulikfluid führende Verbindungsleitung (7) miteinander verbunden sind, wobei der erste Hydraulikzylinder (1) eine erste Zylindereinheit (2) und einen darin verschiebbaren ersten Kolben (3), der zur Betätigung der Kupplung mit dieser verbindbar und/oder verbunden ist, aufweist, der zweite Hydraulikzylinder (4) eine zweite Zylindereinheit (5) und einen darin verschiebbaren zweiten Kolben (6), der mit einem Elektromotor (8) verbunden ist und dessen Hubposition von dem Elektromotor (8) einstellbar ist, aufweist, und die zur Betätigung der Kupplung erforderliche Kraft durch eine Einstellung des Hydraulikdrucks mittels des Elektromotors (8), der auf den zweiten Kolben (6) wirkt, bereitgestellt wird.

Druckmittelbetriebener Kupplungsaktuator

Die Erfindung betrifft einen druckmittelbetriebenen Kupplungsaktuator (10) zur Erzeugung einer Ausrückkraft für die Betätigung einer Reibkupplung eines Fahrzeuges, umfassend einen in einem Aktuatorgehäuse (11) axial verschiebbar untergebrachten Kolben (12), der mit einem nach Außen führenden Übertragungsmittel (13) zur Kupplungsbetätigung in Verbindung steht, wobei zumindest eine Seite des Kolbens (12) eine Druckkammer (14) begrenzt, die über eine Ventilanordnung (15) mit Druckmittel zur Betätigung des Kolbens (12) in Ausrückrichtung beaufschlagbar ist, wobei die Ventilanordnung (15) aus mehreren Einzelventilen (15a, 15b ; 15a', 15b') zusammengesetzt ist, die in jeweils hierzu korrespondierende Aufnahmeausnehmungen (23a, 23b ; 23a', 23b') des Aktuatorgehäuses (11) zumindest teilweise eingesetzt sind und über im Aktuatorgehäuse (11) ausgebildete und von den Aufnahmeausnehmungen (23a, 23b ; 23a', 23b') ausgehende Druckmittelkanäle (25a, 25b) arbeitsleitungsseitig mit der Druckkammer (14) ...

Geschuetzrohrbewegeeinrichtung

Vorrichtung zur Erzeugung unterschiedlicher Arbeitsdrücke

Die Erfindung betrifft eine Vorrichtung 1 zur Erzeugung unterschiedlicher Fördermengen mit verschiedenen Arbeitsdrücken in wenigstens einer Kolbenanordnung 2, insbesondere einer Gleichgang- oder Differentialanordnung, von Hydraulikzylindern, hydraulischen Schwenkantrieben oder Hydraulikmotoren, mit einer ersten motorgetriebenen Druckpumpe 3 zur Erzeugung eines ersten Arbeitsdruckes PN und einer zweiten, mit der ersten Druckpumpe 3 gleichlaufend motorgetriebenen Druckpumpe 4 zur Erzeugung eines zweiten Arbeitsdruckes PH, der höher ist als der erste Arbeitsdruck PN, sowie einer hydraulischen Umschalteinrichtung 5 zur Umschaltung von einen Hochdruck-/Niederdruckzustand mit kombinierten Arbeitsdrücken PN + PH mit einem gemeinsamen Volumenstrom in einem Hochdruckzustand mit einem Arbeitsdruck PH bei Druckerhöhung in der Kolbenanordnung 2, wobei die Umschalteinrichtung 5 als Umlaufventil ausgebildet ist, das eine erste und wenigstens eine zweite, gemeinsam in einem gemeinsamen Ventilblock 10 ...

Geraet zur Umwandlung numerischer Informationsdaten

Hydraulic system used in a vehicle for actuating a coupling and for compensating for a rise in coupling force comprises a valve having a valve position in which a pressure force impinges a slave cylinder via a pump

Hydraulic system (1) comprises a valve having a valve position in which a pressure force impinges a slave cylinder (3) via a pump (27). The pressure force is larger than the predetermined threshold value at which the master cylinder (2) remains in a reaction-less manner. Preferred Features: The valve is formed so that a pressure prevailing on the slave cylinder side impinges a valve plunger (14) and a first restoring surface (18) determining the valve plunger remains in a dislocation-free manner.

Fluidic control system

Improvements in or relating to liquid pressure remote control systems

... 468,976. Hydraulic transmission of power. CLENCH, E. C. S., and AUTOMOTIVE PRODUCTS CO., Ltd. Feb. 5, 1936, No. 3528. [Class 69 (ii)] [Also in Group XXVIII] A liquid.pressure remote - control system comprises in combination a transmitter pump, a reservoir, a slave cylinder unit which is fed with pressure liquid from the pump through either one of a pair of pipe lines, a valve device for passing the pressure liquid into one or other of the pipe lines according to the direction in which the transmitter pump is actuated, means whereby the pipe lines are automatically placed in communication with the reservoir whenever the system is inoperative irrespective of the prevailing setting of the slave cylinder unit, and an electrical device for indicating said prevailing setting. The system, Fig. 1, comprises a transmitter unit A which delivers pressure liquid to the double acting receiver B through one of the pipes 14, 16 according to the direction in which the actuating handle 10 is rotated, the ...

Improvements in or relating to hydraulic remote-control apparatus

... 661,142. Telemotor systems. ETABLISSEMENTS P. DUCLOS. Sept. 19, 1949. [Oct. 15, 1948] 24068/49. Class 69 (ii). In a hydraulic remote-control system of the type comprising two distinct hydraulic circuits connecting liquid controlling cylinders 1 and 2 of a transmitting station to liquid operated means, such as pistons 12, of a receiver and two conduits 31 each connecting one of the circuits to one end of an auxiliary cylinder 25 connected itself to an auxiliary tank 24 through a check-valve 35 and an intake valve 36 spring-loaded at the pressure which it is desired to provide in both circuits at the mid-position of the system, the auxiliary cylinder 25 is provided with a manually operated piston 32 acting to interrupt the connection from the conduits 31 to the auxiliary cylinder 25 when the piston 32 is returned to the idle position. The control gear 6 meshes with racks 5 formed on the end of the transmitter pistons 3, 4, which latter reciprocate in the cylinders 1, 2 respectively, each ...

Hydraulic system

Improvements in hydraulic transmission mechanism

... 551,017. Hydraulic transmission of power: brakes. PRATT, J. H., MANLEY, G. E., and GIRLING, A. H. G. Aug. 21, 1941, No. 10665. [Class 69 (ii)] [Also in Group XXXIV] In a liquid pressure transmission system in which a master cylinder unit exerting a differential action transmits pressure to receiving units such as brakes, and in which air is prevented from entering the system by pressure engendered in the system on the return stroke of the master piston, the master piston 9 is associated with a stationary packing member 8 which seals the piston during an operative stroke but permits liquid to enter the system during the return stroke. The piston 9 is of cup-shape and is connected to a rod 10 moving in a guide 4c. The piston works in a chamber formed of a rear part 4b and front part 4a connected by pipes 6 to the receiving units. The rear part is connected to a reservoir 5 by a passage 4e and a valve 17 which opens by gravity to permit of a free flow outwards, but which closes to provide ...

Hydraulic Transmission of Power Apparatus.

... 16,042. Lake, W. E., [Binns, W. H.]. July 5. Fixed-abutment type with oscillating vanes. In hydraulic telemotor apparatus, provision is made for expelling air from the system and replacing it by water at the ends of the stroke of the moving parts. Reversely arranged cylinders a, b are mounted on a shaft 2 and adapted to be moved over pistons e, f, which are hollow and communicate by pipes 8, 9 with a corresponding set at a distant station. The cylinders are enclosed in a casing g and communicate therewith through openings 12 at the end of each stroke, so that air is free to escape, and water free to enter the cylinders, When the openings have valves 13, the stems of the valve are actuated by contact with adjustable wedge-shaped pieces 14. In another form, the pistons act as valves to cover and uncover ports in the cylinder.

HYDRAULIC REMOTE CONTROL SYSTEM

Device for the transmission of stresses by fluids compressible or otherwise

... 358,963. Fluid - pressure brakes. LAVAUD, D. S. DE, 179, Rue de la Pompe, Paris. April 11, 1930, No. 11579. Convention date, April 12, 1929. Void [Published under Sect. 91 of the Acts]. Addition to 348,013. [Class 103 (i).] In a hydraulic braking device for a vehicle the operating rod is pivotally connected to the middle of a link the extremities of which are yoked to the front and rear wheel brake control pistons in order to equalise the braking effect. The operating rod passes through a sleeve mounted between the two cylinders in the base common to these cylinders. These devices each comprise a rubber diaphragm 92 deformable under the action of a piston 97 and a nest of tubes 99, 100, 101 which are successively moved by a shoulder 98 on the piston. A transparent reservoir 109, maintaining the system filled with liquid, is cut off when the diaphragm 92 first moves by a valve 103 operated by a boss 108 in a resilient blade 105 the end 107 of which engages the diaphragm 92. The reservoir ...

MASTER CYLINDER

REMOTE CONTROL UNIT

Improvements in hydraulic control apparatus

... 418,221. Hydraulic control systems. BOOTHBY, F. L. M., 4, Woodvale, and THOMPSON, J. A., Pangani, Egypt Battery, both in Cowes, Isle-of-Wight. April 19, 1933, No. 11482. [Class 69 (ii).] Hydraulic control systems particularly for controlling ailerons, elevators, or engines of aeroplanes, are provided with a device for locking the controlled member and permitting adjustment of the controlling member. In the form shown, a member 22 has passages 23, 24 normally connecting the sections of the conduits 5, 6, and a passage 25 for connecting the conduits 5, 6 on the controlling side, while they are disconnected on the controlled side. A fitting 13 contains a valve 20, and a liquid reservoir provided with a spring-pressed piston 15 ; the spring 16 is initially adjusted by screwing down a member 17 until its lower end touches the piston.

REMOTE HYDRAULIC CONTROL

... 1,272,085. Hydrostatic transmission control; linkwork. CESSNA AIRCRAFT CO. 6 May, 1969 [23 May, 1968], No. 22971/69. Headings F2D and F2K. [Also in Division F1] A telemotor system used for simultaneously changing the swash plate angles of the pump and motor units of an hydrostatic transmission, comprises swash plate adjusting slave cylinder units 32, 34 each movable by a respective master unit 36, 46, the pistons 40, 50 thereof being arranged to move in a predetermined out of phase relationship. Each piston 40, 50 has a rod 78, 79 connected by a respective link 110, 111 to an individual cam plate 112, 114, both rotatable about a pivot 115. The cam plates have differently shaped cam slots 116, (118) in which slide a cam roller 122 carried by a crank 124 rotated by a handle (not shown). Thus, rotation of the handle causes the roller 122 to ride in the slots 116, (118) thereby imparting out of phase rotation to the cam plates and consequential out of phase movement of the pistons 40, 50. As ...

SOLENOID VALVE MECHANISM PARTICULARLY FOR ANTILOCK VEHICLE BRAKE SYSTEMS

... 1423340 Valves; antiskid braking systems MULLARD Ltd 11 May 1973 [19 June 1972] 28586/72 Headings F2V and F2F An antiskid vehicle braking system includes a solenoid valve mechanism 1 having means to prevent displacement of the solenoid armature 14 for antiskid operation should there be a large fluid leakage past valve member 16 and through orifice 31. Valve member 16 is normally biased to the closed position by a spring 37 and is surrounded with axial and radial clearance by armature 14 carrying an 0-ring 29 which in the unenergized state seals a region 301 bounding orifice 31 under the action of biasing spring 15 bearing on slidable member 33. The clearance around valve member 16 permits the pressures upstream of the latter and within region 301 to equalize providing the valve member is fully closing orifice 31. If however there is substantial leakage through orifice 31, e.g. owing to trapped dirt, then the pressure differential across valve member 16 is too great to ...

A hydraulic or pneumatic drive system, and a motor and a pump therefor

Working cylinder for vehicle hydraulic system

A working cylinder for a vehicle hydraulic system comprises a hollow cylindrical housing 2a open at one end and in which a piston 4a is displaceable. The piston 4a has a guide part 23 which forms a piston stop with a guide sleeve 5a inserted in the housing 2a. A return spring 19 for the piston extends from the closed end of the housing to the base 11 of the piston. The piston may be made from plastics or ceramics, or from sheet metal by a deep drawing process. Areas of the piston may be coated to prevent corrosion and/or to improve the sliding properties. The housing 2a, guide sleeve 5a and retaining ring 6 are preferably made of plastics, with the ring being secured by adhesive or ultrasound welding. Guide part 23 may be replaced by a flange (26, Fig.4).

MANIPULATOR

An improved manipulator for manipulating a glass electrode or the like is disclosed. The manipulator includes a driving section and an actuating section with the glass electrode mounted thereon both of which are in operative association with one another by way of three lines of tubes. The X-coordinate, Y-coordinate and Z-coordinate driving mechanisms in the driving section are hydraulically communicated with the X-coordinate, Y-coordinate and Z-coordinate displacing mechanisms in the actuating section. As a tiltable lever with the Z-coordinate driving mechanism incorporated therein is inclined, hydraulic pressure in the X-Y coordinate plane driving mechanism constituted by the combination of X-coordinate and Y-coordinate rectilinear driving mechanisms varies and thus developed pressure variations are transmitted to the X-coordinate and Y-coordinate displacing mechanisms in the actuating section whereby the glass electrode is displaced by a distance equivalent to an angle of inclining movement ...

HYDRAULIC TELEMOTOR APPARATUS

Improvement in a hydraulic control apparatus for actuating a remotely located mechanism having a shipping and installation restraining strap for an actuator having a housing and a linearly moveable output member projecting from the front end of the housing, the strap being non-elastic and rupturable and having a part thereof engageable with the free end of the output member and another part projecting rearwardly toward the rear end of the housing, the improvement comprising an elastic anchor arrangement for the restraining strap to allow full extension thereof without rupture thereof, a stop and positioning arrangement for the elastic anchor arrangement which predetermines the retracted position in which the output member is yieldably held, and an override arrangement to selectively debar functioning of the elastic anchor arrangement whenever it is intended to rupture the restraining strap.

Hydraulic transmission applicable, in particular, to the braking of vehicles

... 488,771. Hydraulic brakes. LEVY, R. L. Sept. 27, 1937, No. 26153. [Class 103 (i)] [Also in Group XXIX] In a hydraulic transmission system particularly for vehicle brakes, the master cylinder 1 contains pistons 2, 2a, the space 6 between the pistons 2, 2a and the space 6a between the piston 2a and the cylinder end being con. nected to separate receivers ; in the inoperative position, the pistons 2, 2a are forced by return springs 17, 17a against stroke-limiting cross-bars 16, 16a, push rods 14, 14a then opening valves 12, 12a against springs 13, 13a to place the spaces 6, 6a in open communication with the reservoirs 8, 8a by way of passages 11, 11a and chambers 10, 10a. Oblique passages 19, 19a terminating at the valves allow air to vent to the reservoirs. The pistons may be of different diameters in order to obtain different pressures.

HYDROSTATICALLY OPERATED CONTROL APPARATUS

... 1357642 Hydrostatic steering mechanism DANFOSS AS 26 Aug 1971 [9 Sept 1970] 40038/71 Heading B7H Hydrostatic steering mechanism comprises two control devices 4, 10 connected in parallel to a steering motor 19 and each including a control valve and a control motor actuated by a common steering column, one control device 4 being connected to the column 27 through a slipping clutch 25 which slips if the mechanism is actuated manually so that only one control motor operates and the manual effort required is correspondingly reduced. The control device 4 may be of a larger size than the device 10. As shown the control devices 4, 10 are supplied through non-return valves 3, 9 by respective pumps 1, 7 matched to the size of the control devices but a single pump may supply both devices through a flow divider. Relief valves 22, 23 are connected across the steering motor 19. More than two control devices may be provided.

A hydraulic or pneumatic drive system, and a motor and a pump therefor

A fluid motor 212 for a pneumatic or hydraulic drive system comprises: at least one piston means 226; at least one cylinder means 204a, 204b; motion conversion means and a sleeve means 205, 206. The or each cylinder and an end of the or each piston defines a chamber 234a, 234b.The or each cylinder is coupled to a pressure generation and transmission system arranged to cause alternating flow of fluid into and out of the or each chamber to cause reciprocating movement of the piston. The motion conversion means comprises: at least one portion (215) extending continuously and circumferentially around a central axis and extending in part longitudinally relative to the central axis, for example a non-linear groove, and at least one linking means 208a, 208b, 209a, 209b. The at least one portion and the or each linking means are relatively rotatable about the central axis. A one of the at least one linking means or the at least one portion is coupled to the at least one piston means so that reciprocating ...

Power conversion apparatus

A power conversion apparatus (1 ) for powering automotive ancillary equipment such as a refrigeration unit (4) that requires a substantially constant voltage and frequency. The apparatus (1 ) includes a variable displacement pump (5) connected to an automobile engine (3), a motor (7) fluidly connected to the pump (5), an alternator (8) coupled to the motor (7) and a controller (6) configured to receive a signal indicative of a speed of the engine (3). In use, the pump (5) is driven by the engine (3) to induce a flow that drives the motor (7), which drives the alternator (8). The controller (6) is configured to control the displacement of the pump (5) based on the speed signal in order to regulate the pressure and/or flow of fluid supplied to the motor (7) from the pump (5) to cause the alternator (8) to supply a predetermined alternating current frequency and voltage to the refrigeration unit (4).

Improvements in manual and power-driven apparatus for controlling a fluid-operated motor

... 1,040,982. Hydraulic apparatus. SHAFER VALVE CO. Feb. 14, 1964 [March 18, 1963], No. 6241/64. Heading F1P. An apparatus, Fig. 1 (not shown), for controlling the operation of a hydraulic motor comprises a power-driven reversible pump 20 and a manually operable pump 66, 67 each mounted on a reservoir casing 11 and each being selectively operable to supply hydraulic fluid from the reservoir 11 through a rotary valve 27 to one of two outlets provided in a manifold block 43 and connected to opposite sides of the motor. The rotary valve 27 has a shaft 44 rotatable in the manifold block 43 and provided with a crank arm 45 capable of being retained in one of three predetermined positions by the engagement of a spring-loaded pin, carried thereby, with slots 50 in the manifold block 43. The three positions of the rotary valve 27 correspond to operation of the motor in either direction by the reversible pump 20, forward operation by the pump 66, 67 and reverse operation by the pump 66, 67. Each outlet ...

Hydraulic system

A hydraulic system for an electric working vehicle or hybrid working vehicle of the kind having an electric source of power and an alternative source of power, the hydraulic system comprising: one or more hydraulically actuated devices; and a hydraulic pump configured to supply hydraulic fluid to the one or more hydraulically actuated devices; wherein the hydraulic pump is configured to operate in a low output state when a flow of hydraulic fluid is not required by the one or more hydraulically actuated devices; and wherein the hydraulic system is configured to use hydraulic fluid supplied by the hydraulic pump in the low output state for one or more auxiliary functions of the hydraulic system.

A Pneumatic Operated Transmitter and Receiver for the Visual Indication of Signals, Orders and the like.

... 123,422. Cole, S. W., and Hannaford, C. March 6, 1918. Pneumatic telegraphs.-A pneumatically-operated order telegraph for use on ships, aeroplanes, &c., comprises flexible air chambers B, B<1> at the transmitting and receiving stations, respectively. arranged in casings A, A<1>, fitted with indicating dials over which move pointers K, K'. The pointer K is attached to a screwed shaft F, operable by a nut H, and on turning this nut movement is imparted to the chamber B through lever and link mechanism E<1>, E<2>, E<3>, the last of which moves about an adjustable pivot n carried by an adjustable screw-block n'. Variations in pressure in the chamber B are transmitted by a pipe c to the chamber B<1>, and movements of the flexible chamber B' are transmitted to the pointer K<1> by means of a lever P and chain passing over a drum Q on the spring-controlled shaft of the pointer K'. When the pointer K is at zero position it is held by a spring-catch I engaging a recess in the top of casing A, and ...

Actuator module

Industrial system with synthetically commutated variable displacement fluid working machine

Hydraulic remote control apparatus

... 1,039,478. Hydraulic apparatus. W. P. DUNPHY. Aug. 4, 1964 [July 29, 1963], No. 31256/64. Heading F1P. In an hydraulic remote control system comprising a master cylinder 10 Fig. 1 (not shown) divided by a piston 12 into hydraulic chambers 66, 68 connected by lines 52, 50 to chambers 124, 120, Fig. 3 (not shown) into which a slave cylinder 30 is divided by its piston 32, automatic re-synchronization of the pistons 12, 32, is effected when the slave piston 32 is at its datum point e.g., mid position and as the master piston is approaching its mid position by the pressure fluid displaced by the master piston being made to by-pass the slave piston which is thus held stationary until the master piston reaches its mid position. The slave piston 32 has radial passages 138 which at the mid position connects line 52 and chamber 124 with a bore 128 in the fixed rod 34 over which the slave piston 32 slides and which bore 128 is connected by a line 54 to a bore 80 in the fixed rod 14 over which the ...

HYDRAULIC APPARATUS

Fluidic control system

Improvements in or relating to master cylinders for liquid pressure control systems

... 1,004,639. Hydraulic brakes; valves. AUTOMOTIVE PRODUCTS CO. Ltd. Nov. 12, 1963 [Dec. 17, 1962], No. 47577/62. Headings F2F and F2V. A liquid pressure master cylinder 10 for vehicle brake systems is provided with a valve 31 to control the flow of liquid through a pressure outlet 15, the valve comprising a body member 41 which, under the pressure of a spring 44, is adapted to make sealing engagement with a seat around the pressure outlet 15 and the concave arcuate surface, the body member of the valve is formed with an orifice 51 which is controlled by a resilient blade-like member 53 so that the member 53 is displaced by the liquid flowing out of the master cylinder through the pressure outlet. As shown in Figs. 2 and 3 the valve body 41 has an interrupted flange 42 to guide it in the master cylinder barrel 10. On brake release the blade-like member 53 is urged against the peripheral surface of the recess 46 by liquid returning into the master cylinder so that liquid can enter the master ...

Needlebar positiioning system

A pressurised medium operated installation

Force transmitting device

... 856,725. Milling-cutter arbors. FREEMAN, H., and SPENDLOVE, E. H. Oct. 22, 1958 [Dec. 13, 1957; April 11, 1958], Nos. 38924/57 and 11604/58. Class 83 (3). [Also in Group XXIV] In a force-transmitting device of piston-andcylinder type, a chamber 20, Fig. 2, having two or more openings closed by pressure-pads 24, 25, which form the force-applying or force-receiving members, is filled with a solid member of rubber, plastic or other material having substantially the properties of a liquid. The pad 24 is actuated through.a ball 23 by a screw 22, and the pad 25, which is of larger diameter, engages a number of push-rods 27 actuating an end-cap 28 which is slidable on the body 19 of the device. The interior of the body 19 is flared, as shown, to connect the small and large-diameter bores therein. In use as a screw-clamp for the cutters on the arbor of a milling-machine, the rods 27 slide in bores in a collar 26, which is secured in the body 19 and has an internal thread for fitting on to the arbor ...

Improvements in or relating to hydraulic power or motion transmitting means or systems

... 902,794. Reciprocating pumps. COULTHARD & CO. Ltd., WILLIAM. March 9, 1961 [May 27, 1960], No. 18734/60. Class 102(1). [Also in Group XXIX] A hydraulic power or motion transmitting system comprises means for pumping hydraulic fluid in excess of that required to fill and actuate the system, the excess fluid passing through means designed to indicate visually that the system is operating correctly. The pumping means consists of a plunger 10 reciprocated in a cylinder 11 by a lever S2 oscillated by a cam S1 on a shaft S, such as the shaft of a ship's engine or propeller, to draw fluid in a tank 15 through a pipe 13a and inlet valve 13 and pump it through a line 16 to a piston 20 disposed in a cylinder 24 and having a rod 20a connected to a counter C to record the number of revolutions of the shafts. The fluid displaced by the plunger is in excess of that required to displace the piston and the excess fluid passes through an adjustable overspill valve 14 to a pipe 18 leading to a visual indicator ...

Hydraulic controls for self-propelled vibrating road rollers

... 899,352. Change-speed and clutch control. RICHIER S.A. June 17, 1960 [July 31, 1959], No. 21325/60. Class 80 (2). In a vibratory road roller the clutches for controlling forward and reverse drive, and for controlling the rate of vibration, are operated by hydraulic piston an cylinder units, a loading spring being incorporated to determine the pressure in the system. As shown in Fig. 1, the reversing control comprises a double cone clutch 10 connected to a double piston 9 forming working chambers c, d connected to the chambers a, b in a second cylinder 1 movable by a manual control lever 2 in relation to a piston 3 which is slidable on a rod 4 carrying the loading springs 6, 7 compressible between the ends of the piston and a fixed casing 5. Liquid is fed to cylinder 1 by gravity through ports 11, 12 so arranged that the supply is cut off from the working chamber upon operation of lever 2. Fig. 2 shows an expanding pulley drive for controlling the vibrator mechanism, the pulley disc 16 being ...

Improvements in or relating to timing compensator

... 857,104. Telemotors. THOMPSON, E. A. May 6, 1958 [May 6, 1957], No. 14502/58. Class 69 (2). A telemotor system comprises a cam-actuated transmitter 16a, a receiver 62 and a diverting element 40. The receiver and diverter are biased against the transmitter by accumulator pressure which effects the return stroke of the transmitter and maintains follower 14a always in contact with cam 12a. The piston 40 is differential and moves in a cartridge 32 which may be reversed in bore 30, so that the piston may present either of two faces to the accumulator pressure. Intermediate in area between the areas of these two faees is the piston face of piston 62 open to accumulator pressure. When pressure is applied by the transmitter in the arrangement shown in Fig. 5, diverter piston 40 moves first until it reaches adjustable stop 48, whereupon the receiver starts to move. On the return transmitter stroke, liquid is returned first by the receiver and then the diverter. With piston 40 in the reverse position ...

DEVICE FOR TEMPERATURE COMPENSATION IN A PRESSURE MEDIUM CIRCUIT

... 1522495 Telemotors SAAB-SCANIA AB 9 Oct 1975 [14 Oct 1974] 41467/75 Heading F1P [Also in Division F4] A device for compensating temperature dependent volume variations in a movement transmitting . pressure medium circuit, e.g. a motor vehicle hydraulic system for adjusting headlamp tilt in response to changes in the vehicle body attitude k comprises a movement transmitting member 21 attached to a support ring 25 free to move with respect to a pipe 22 and a further flexible, variable volume member 23 which compensates for temperature dependent volume variations in the volume of the main member 21. As shown, in one embodiment the members 21, 23 are bellows units. If the temperature increases to expand the pressure medium in the main bellows 21 and tending to increase a dimension k between the bellows end and the pipe end 28, then the pressure medium within further bellows 23, 24 also expands and extends the inner bellows 23 whilst the outer bellows 24 contract because of the diameter differential ...

Improvements in or relating to tools for crimping electrical connectors to electrical conductors

... 815,582. Ball bearings. AMP Inc. March 26, 1957 [Jan 17, 1957], No. 31650/58. Divided out of 815,581, [Group XXII]. Class 12 (1). [Also in Group XXII] In a tool for crimping electrical connectors (Group XXII), a screw-threaded member 40 rotatable by a handle 43 co-operates with a bearing box 46 containing complementary screw threads 48 which co-operate with the member 40 to form a ball-bearing raceway. When the ball-bearings 50 reach the end of the raceway they are recirculated through a channel 52 so that they travel continuously with the threaded member 40.

Apparatus for setting the position of hydraulic adjusting cylinderss

An apparatus for setting the position of a device provided with a number of hydraulic adjusting cylinders operates by simultaneously supplying to the various cylinders quantities of hydraulic medium corresponding to the desired setting of the device. Each of the hydraulic cylinders communicates with a respective displacement chamber in a hydraulic pump 1 which is common to all hydraulic cylinders. The pump comprises a cylinder 4 and a piston body 3 axially displaceable therein. The piston body 3 is stepped to form a number of annular, concentric piston surfaces 2, and the inner diameter of the cylinder is stepped in a corresponding manner to the piston rod. This results in the formation of a displacement chamber 5 in front of each piston surface 2. The chambers are mutually sealed during a working stroke of the pump and communicate with the cylinders to be set by way of connections 7. ...

Pressure generating means

... 1,019,701. Hydraulic brakes. WAGNER ELECTRIC CORPORATION. March 28, 1963 [April 2, 1962], No. 12299/63. Heading F2F. The end 32 of a master cylinder piston 16 is formed with a guide ring 31 having axial passages 38 therethrough and a smaller ring 35 which abuts a sealing cup 19. A clearance of 0.004 to 0.010 of an inch between the ring 35 and cylinder 2 permits free liquid flow during the return stroke whilst preventing extrusion of the sealing cup into the clearance during actuation. As shown an annular channel 33 may be provided between the ring 35 and guide ring 31.

PISTON ENGINES WITH HYDROSTATIC TRANSMISSIONS

... 1281797 Liquid piston engines SULZER BROS Ltd 19 April 1971 [2 April 1970] 24243/71 Heading F1B The volume of hydraulic fluid between a hydraulic piston 6 of an I. C. engine and a piston 12 of a hydraulic motor 10 is maintained constant by permitting inflow/outflow of hydraulic fluid when piston 6 overshoots desired bottom/top dead centre positions. When piston 6 overshoots b. d. c. Fig. 1 hydraulic fluid can flow via line 19, gallery 14, annular channel 21 and bore 22 into pipe 8 until the gap Su is closed. If the desired t. d. c. is overshot, fluid flows out via gallery 15 and line 20. In another embodiment, Fig. (not shown) bore 22 is replaced by a line (32) outside the hydraulic cylinder. In Fig. 6 (not shown) the hydraulic piston opens valve 63 if it overshoots b. d. c. (For Figure see next page) ...

Master cylinder for hydraulic brake system, more particularly for motor vehicles

... 784,965. Hydraulic master cylinders. FIAT SOC. PER AZIONI, and BALDWIN, P. S. Oct. 19, 1955 [Oct. 20, 1954], No. 29879/55. Addition to 704,835. Class 103 (1). In a master cylinder for hydraulic braking systems in which two pistons are provided acting in a common cylinder, each presenting a pressure chainber for supplying liquid under pressure to a set of wheel brake cylinders and each provided with valve means for connecting the pressure chambers with separate fluid supply conduits on the return stroke of the pistons, the valve means each comprise a resilient ring mounted capable of freely floating in an axial direction between two abutments connected to the associated piston, the outer ring face being in sliding contact with the cylinder wall, means being provided for bringing fluid at the pressure existing in the pressure chamber of each piston into contact with the inner face of the associated floating ring. In the embodiment illustrated, the master cylinder is provided with a main piston ...

Valve, particularly for hydraulic control systems

... 792,032. Hydraulic brakes. SCHAFER INDUSTRIEGES SCHWEINFURT GES. May 9, 1956 [May 9, 1955], No. 14356/56. Addition to 753,699. Class 103 (1). A master-cylinder for hydraulic brakes has similar valves both at the end of the piston 3 adjacent the pressure cylinder and at the outlet end of the cylinder, each valve comprising a member 20 (or 27) the peripheral portion of which can flex in relation to the surface of a valve seat, and a central portion 25 (or 30) which rests with its underside against the bottom of a circular recess 26 formed on the central portion of a carrier member 24 (or 29). When the piston is displaced to produce a brake application, the fluid pressure forces the member 20 against its seat and drives liquid through apertures 28 in the bell-shaped valve cap 29 and past the valve member 27 at the end of the cylinder to the brakes by passages 12 or 13. On return movement of the piston, valve 27 flattens against the holes 28 and the cap 29 is lifted off the sealing- ring 41 ...

A HYDRAULIC OR PNEUMATIC DRIVE SYSTEM, AND A MOTORAND A PUMP THEREFOR

REMOTELY RECONFIGURABLE HIGH PRESSURE FLUID PASSIVE CONTROL SYSTEM FOR CONTROLLING BI-DIRECTIONAL PISTON PUMPS AS ACTIVE SOURCES OF HIGH PRESSURE FLUID, AS INACTIVE RIGID STRUCTURAL MEMBERS OR AS ISOLATED FREE MOTION DEVICES

REMOTELY RECONFIGURABLE HIGH PRESSURE FLUID PASSIVE CONTROL SYSTEM FOR CONTROLLING BI-DIRECTIONAL PISTON PUMPS AS ACTIVE SOURCES OF HIGH PRESSURE FLUID, AS INACTIVE RIGID STRUCTURAL MEMBERS OR AS ISOLATED FREE MOTION DEVICES

REMOTELY RECONFIGURABLE HIGH PRESSURE FLUID PASSIVE CONTROL SYSTEM FOR CONTROLLING BI-DIRECTIONAL PISTON PUMPS AS ACTIVE SOURCES OF HIGH PRESSURE FLUID, AS INACTIVE RIGID STRUCTURAL MEMBERS OR AS ISOLATED FREE MOTION DEVICES

HYDRAULIC CLUTCH OPERATING SYSTEM ALSO BETWEEN THE MASTER CYLINDER AND THE NEHMERZYLINDER OF THE SYSTEM ARRANGEMENT SERVO MEANS

HYBRID CONSTRUCTION MACHINE AND CONTROL DEVICE FOR THIS CONSTRUCTION MACHINE

HYDRAULIC SYSTEM

HYDRAULIC MECHANISM FOR AUTOMATIC STEERING OF THE HEADLIGHT INCLINATION WITH A MOTOR VEHICLE

HYDROSTATIC TRANSMISSION

HYDRAULIC CLUTCH CONTROL DEVICE

ANORDNUNG ZUR HYDRAULISCHEN BETÄTIGUNG EINES VERDECKS, EINES HECKDECKELS OD. DGL.

HYDRAULISCHE BETÄTIGUNGSANORDNUNG

Method and control circuit for controlling a pressure medium supply for a hydraulic actuator

Die Erfindung betrifft ein Verfahren zur Regelung einer Druckmittelzufuhr für mindestens einen hydraulischen Aktor (110) einer zyklisch arbeitenden Maschine, wobei der Aktor (110) von einer drehzahlvariablen Verstellpumpe (120), bei der ein in einem Verdrängervolumen je Arbeitsspiel verstellbares Förderwerk (122) von einem drehzahlvariablen Antrieb (121) angetrieben wird, mit einer Druckmittelmenge versorgt wird, wobei ein Ist-Volumenstrom auf einen Soll-Volumenstrom und/oder ein Ist-Förderdruck auf einen Soll-Förderdruck durch Vorgabe eines Drehzahlsollwerts (nSoll) und eines Sollwerts (αSoll) für eine das Verdrängervolumen je Arbeitsspiel bestimmende Kenngröße geregelt werden, wobei ein Sollwert (αSoll) für die das Verdrängervolumen je Arbeitsspiel bestimmende Kenngröße für wenigstens einen bestimmten Zeitpunkt während eines Zyklus der Maschine durch Variation des Sollwerts und Auswerten der elektrischen Leistung (Pi) des drehzahlvariablen Antriebs (121) für den wenigstens einen Zeitpunkt ...

HYDRAULISCHE BETÄTIGUNGSANORDNUNG

The arrangement has a double action operating cylinder (1). The operating spaces (3,4) of the cylinder are respectively in connection with a respective side of a switchable pressure source (11) via a respective unlockable return valve (8,9). That operating space which is under pressure is connected to a controllable proportional pressure valve (15) to limit pressure. The output side of the proportional pressure valve (15) is connected to a pressure means conduit (6,7) via a return valve (18,19) respectively open in the direction of the conduit and the respective cylinder operating space.

ANORDNUNG ZUR HYDRAULISCHEN BETÄTIGUNG EINES VERDECKS, EINES HECKDECKELS OD. DGL.

In order to fasten the lid and operate it in at least one direction on an emergency basis, the two work chambers (2,3) of the lids are joined to one another by a connecting pipe (12), which contains a blockable check valve (13). The valve constituent of the check valve is blockable by a hydraulically-operated control piston with a larger surface than a valve seat. A throttle (15) is installed in the pipe (4) leading to one of the work chambers of the work cylinders. The unblockable check valve opens in its unblocked state in the direction of the rod side (2) of the work cylinders on the piston side (3).

HYDRAULISCHE BETÄTIGUNGSANORDNUNG

Hydraulic system i.e. dispenser-slave-force deflection system, for e.g. deep drawing press, has piston, where counter pressure on piston is generated with compressible container i.e. hydraulic cylinder, that is located within piston

The hydraulic system has a slidable piston (9) supported in an accumulator (6) in a liquid-proof manner. The piston is pressurized by a hydraulic fluid, where a corresponding counter pressure is exerted on the piston. The counter pressure on the piston is generated with a compressible container i.e. hydraulic cylinder, on a side that is turned away from the hydraulic fluid. The container encloses a predetermined gas amount, where the container is located within the piston.

Hydraulische Schaltung und Maschine mit einer hydraulischen Schaltung

Disclosed is a hydraulic circuit, in which a displacer and a control valve are connected in parallel. The displacer is to both terminals connected to a consumer as in a closed circuit. The parallel valve control is operated as an open circuit. It is contemplated that the displacer control the main part of the hydraulic driving power and therefore renders amount of fluid, while the control valve compensates for deviations from a predetermined pressure, position or velocity control curve simultaneously.

HYDRAULISCHE DRUCKVERSORGUNGSEINHEIT, SOWIE ELEKTROHYDRAULISCHE ARBEITSEINHEIT UND SPANNSYSTEM MIT EINER DERARTIGEN DRUCKVERSORGUNGSEINHEIT

Eine hydraulische Druckversorgungseinheit weist zwei abwechselnd druckbeaufschlagte Ausgänge (6, 7), eine reversierbare Pumpeneinheit mit zumindest zwei Pumpen (9, 10) und einen alle Pumpen gemeinsam antreibenden reversierbaren Elektromotor (11), sowie eine Versorgung für Hydraulikmedium auf. Um bis zum Erreichen eines vorgebbaren Druckniveaus eine große Menge an Hydraulikmedium und nach Erreichen dieses Druckniveaus Hydraulikmedium mit großem Druck zur Verfügung zu stellen, ist eine Pumpe als Niederdruckpumpe (10) und eine Pumpe als Hochdruckpumpe (9) ausgelegt, wobei die druckbeaufschlagten Ausgänge beider Pumpen an den gleichen Ausgang (6, 7) der Druckversorgungseinheit gelegt sind. Die Hochdruckpumpe (9) ist von der Niederdruckpumpe (10) durch Rückschlagventile (10, 13) getrennt und ist jede Pumpe (9, 10) über ein eigenes Wechselventil (14, 15) mit der Versorgung für Hydraulikmedium verbunden. Beide Ausgänge der Niederdruckpumpe (10) sind über Druckschaltventile (16, 17) mit dem Tank ...

ГИДРАВЛИЧЕСКИЙ ПРИВОД ТРАНСПОРТЕРА И ДИСКА ПЕСКОРАЗБРАСЫВАТЕЛЯ МАШИНЫ ДЛЯ ОБРАБОТКИ ПОВЕРХНОСТИ ПОЛОТНА ДОРОГИ

Гидравлический привод транспортера и диска пескоразбрасывателя машины для обработки поверхности полотна дороги, содержащий два насоса, один из которых соединен с гидромотором транспортера, а второй - с гидромотором диска, в магистрали слива которого установлен подпорный клапан, отличающийся тем, что линия управления подпорного клапана соединена с напорной магистралью второго насоса. (19) RU (11) 12 844 (13) U1 (51) МПК F15B 7/00 (2000.01) E01H 10/00 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ (21), (22) Заявка: 99115945/20, 21.07.1999 (24) Дата начала отсчета срока действия патента: 21.07.1999 (46) Опубликовано: 10.02.2000 (72) Автор(ы): Усок В.И., Винокуров В.А., Устинова Н.Е. (73) Патентообладатель(и): Общество с ограниченной ответственностью "КамПром" U 1 1 2 8 4 4 R U Ñòðàíèöà: 1 U 1 (57) Формула полезной модели Гидравлический привод транспортера и диска пескоразбрасывателя машины для обработки поверхности полотна дороги, содержащий два насоса, один из которых соединен с гидромотором транспортера, а второй - с гидромотором диска, в магистрали слива которого установлен подпорный клапан, отличающийся тем, что линия управления подпорного клапана соединена с напорной магистралью второго насоса. 1 2 8 4 4 (54) ГИДРАВЛИЧЕСКИЙ ПРИВОД ТРАНСПОРТЕРА И ДИСКА ПЕСКОРАЗБРАСЫВАТЕЛЯ МАШИНЫ ДЛЯ ОБРАБОТКИ ПОВЕРХНОСТИ ПОЛОТНА ДОРОГИ R U Адрес для переписки: 614014, Пермь, ул.1905 года, 35, ЗАО "СКБ", Патентно-лицензионное бюро (71) Заявитель(и): Общество с ограниченной ответственностью "КамПром" U 1 U 1 1 2 8 4 4 1 2 8 4 4 R U R U Ñòðàíèöà: 2 RU 12 844 U1 RU 12 844 U1 RU 12 844 U1 RU 12 844 U1 RU 12 844 U1

ГИДРАВЛИЧЕСКИЙ ПРИВОД ТРАНСПОРТЕРА И ДИСКА ПЕСКОРАЗБРАСЫВАТЕЛЯ МАШИНЫ ДЛЯ ОБРАБОТКИ ПОВЕРХНОСТИ ПОЛОТНА ДОРОГИ

Гидравлический привод транспортера и диска пескоразбрасывателя машины для обработки поверхности полотна дороги, содержащий два насоса, один из которых соединен с гидромотором транспортера, а второй - с гидромотором диска, регулятор управляющего потока в виде блока настраиваемых дросселей и переключателя потока, соединенного со вторым насосом, отличающийся тем, что насос транспортера выполнен регулируемым, а регулятор управляющего потока соединен с его узлом регулирования. (19) RU (11) 12 845 (13) U1 (51) МПК F15B 7/00 (2000.01) E01H 10/00 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ (21), (22) Заявка: 99115946/20, 21.07.1999 (24) Дата начала отсчета срока действия патента: 21.07.1999 (46) Опубликовано: 10.02.2000 (72) Автор(ы): Усок В.И., Винокуров В.А., Устинова Н.Е. (73) Патентообладатель(и): Общество с ограниченной ответственностью "КамПром" U 1 1 2 8 4 5 R U Ñòðàíèöà: 1 U 1 (57) Формула полезной модели Гидравлический привод транспортера и диска пескоразбрасывателя машины для обработки поверхности полотна дороги, содержащий два насоса, один из которых соединен с гидромотором транспортера, а второй - с гидромотором диска, регулятор управляющего потока в виде блока настраиваемых дросселей и переключателя потока, соединенного со вторым насосом, отличающийся тем, что насос транспортера выполнен регулируемым, а регулятор управляющего потока соединен с его узлом регулирования. 1 2 8 4 5 (54) ГИДРАВЛИЧЕСКИЙ ПРИВОД ТРАНСПОРТЕРА И ДИСКА ПЕСКОРАЗБРАСЫВАТЕЛЯ МАШИНЫ ДЛЯ ОБРАБОТКИ ПОВЕРХНОСТИ ПОЛОТНА ДОРОГИ R U Адрес для переписки: 614014, Пермь, ул.1905 года, 35, ЗАО "СКБ", Патентно-лицензионное бюро (71) Заявитель(и): Общество с ограниченной ответственностью "КамПром" U 1 U 1 1 2 8 4 5 1 2 8 4 5 R U R U Ñòðàíèöà: 2 RU 12 845 U1 RU 12 845 U1 RU 12 845 U1 RU 12 845 U1 RU 12 845 U1

Гидравлическая система

1. Гидравлическая система, содержащая как минимум бак с рабочей жидкостью, насос и нагрузку, соединенные всасывающими, сливными, напорными и дренажными трубопроводами, отличающаяся тем, что дренажный трубопровод введен в бак сверху под уровень рабочей жидкости и на участке от уровня рабочей жидкости до входа в бак имеет в стенке по меньшей мере одно отверстие. 2. Гидравлическая система по п.1, отличающаяся тем, что дренажный трубопровод введен в бак в любом месте, но имеет участок, расположенный над уровнем рабочей жидкости, на котором расположено по меньшей мере одно отверстие (предпочтительно в его наивысшей точке). 3. Гидравлическая система по п.2, отличающаяся тем, что упомянутый участок дренажного трубопровода выполнен в виде открытого лотка, высота которого не меньше диаметра дренажного трубопровода. (19) RU (11) 30 405 (13) U1 (51) МПК F15B 7/02 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2003107147/20 , 17.03.2003 (24) Дата начала отсчета срока действия патента: 17.03.2003 (46) Опубликовано: 27.06.2003 (72) Автор(ы): Григоров Ф.И. (73) Патентообладатель(и): Григоров Фёдор Иванович R U Адрес для переписки: 352930, Краснодарский край, г. Армавир, ул. Новороссийская, 110, кв.73, Ф.И. Григорову (71) Заявитель(и): Григоров Фёдор Иванович 3 0 4 0 5 R U Ñòðàíèöà: 1 U 1 (57) Формула полезной модели 1. Гидравлическая система, содержащая как минимум бак с рабочей жидкостью, насос и нагрузку, соединенные всасывающими, сливными, напорными и дренажными трубопроводами, отличающаяся тем, что дренажный трубопровод введен в бак сверху под уровень рабочей жидкости и на участке от уровня рабочей жидкости до входа в бак имеет в стенке по меньшей мере одно отверстие. 2. Гидравлическая система по п.1, отличающаяся тем, что дренажный трубопровод введен в бак в любом месте, но имеет участок, расположенный над уровнем рабочей жидкости, на котором расположено по меньшей мере одно отверстие (предпочтительно в ...

НАСОС С РУЧНЫМ ПРИВОДОМ

1. Насос с ручным приводом, содержащий корпус, в котором расположены рабочий плунжер с образованием рабочей камеры, которая через всасывающий, предохранительный и переливной клапаны сообщена с емкостью для рабочей жидкости, а через нагнетательный - с потребителем, и содержащий привод в виде подвижной рукоятки с кулисой, установленной на опорной оси вращения и соединенной с рабочим плунжером с помощью дополнительной оси, отличающийся тем, что он снабжен управляющим плунжером, установленным в корпусе с образованием полости, соединенной с потребителем, и контактирующим с поворотным рычагом, закрепленным на поворотной опоре на корпусе и соединенным через опорную ось вращения с кулисой с возможностью ее перемещения относительно дополнительной оси рабочего плунжера, размещенной в профильном пазу кулисы. 2. Насос по п.1, отличающийся тем, что он снабжен контактирующим с поворотным рычагом подпружиненным плунжером, размещенным в корпусе со стороны, противоположной размещению управляющего плунжера относительно поворотной опоры рычага. 3. Насос по п.1, отличающийся тем, что свободный конец поворотного рычага соединен с корпусом насоса пружиной. (19) RU (11) 36 864 (13) U1 (51) МПК F04B 9/14 (2000.01) F15B 7/00 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2003132961/20 , 12.11.2003 (24) Дата начала отсчета срока действия патента: 12.11.2003 (46) Опубликовано: 27.03.2004 (73) Патентообладатель(и): Кривошеин Евгений Николаевич R U Адрес для переписки: 454092, г.Челябинск, ул. Курчатова, 23, кв.135, Е.Н. Кривошеину (72) Автор(ы): Апасов И.В., Кривошеин Е.Н., Манов Д.В., Манов В.В., Форенталь В.И. Ñòðàíèöà: 1 3 6 8 6 4 R U U 1 (57) Формула полезной модели 1. Насос с ручным приводом, содержащий корпус, в котором расположены рабочий плунжер с образованием рабочей камеры, которая через всасывающий, предохранительный и переливной клапаны сообщена с емкостью для рабочей жидкости, а через нагнетательный - с ...

ГИДРАВЛИЧЕСКИЙ РЫЧАЖНЫЙ ГАЙКОВЕРТ

Гидравлический рычажный гайковерт, включающий гидроцилиндр, в составном корпусе которого, в гильзе расположен соединенный с рабочим органом поршень со штоком, образующий со стенками гильзы и одной из частей корпуса возвратную камеру и образующий со стенками гильзы и другой частью корпуса рабочую камеру, сообщающуюся с напорной линией, а также содержащий подпружиненный клапан и седло, отличающийся тем, что он снабжен возвратной пружиной, установленной в возвратной камере, и тягой с упорами, один из которых размещен на торце тяги и свободном торце штока, другой упор установлен на тяге подвижным и подпружиненным с двух сторон, причем на свободном торце тяги установлена регулировочная гайка, кроме того, клапан, соединенный с тягой, и седло, сообщающееся со сливной линией, размещены в рабочей камере. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 45 480 (13) U1 (51) МПК F04B 9/04 (2000.01) F15B 7/00 (2000.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2004136711/22 , 14.12.2004 (24) Дата начала отсчета срока действия патента: 14.12.2004 (45) Опубликовано: 10.05.2005 (73) Патентообладатель(и): Кривошеин Евгений Николаевич (RU) U 1 4 5 4 8 0 R U Ñòðàíèöà: 1 U 1 Формула полезной модели Гидравлический рычажный гайковерт, включающий гидроцилиндр, в составном корпусе которого, в гильзе расположен соединенный с рабочим органом поршень со штоком, образующий со стенками гильзы и одной из частей корпуса возвратную камеру и образующий со стенками гильзы и другой частью корпуса рабочую камеру, сообщающуюся с напорной линией, а также содержащий подпружиненный клапан и седло, отличающийся тем, что он снабжен возвратной пружиной, установленной в возвратной камере, и тягой с упорами, один из которых размещен на торце тяги и свободном торце штока, другой упор установлен на тяге подвижным и подпружиненным с двух сторон, причем на свободном торце тяги установлена регулировочная гайка, кроме того, клапан, ...

ЦИФРОВОЙ СЛЕДЯЩИЙ ПРИВОД ВЕРТИКАЛЬНОГО НАВЕДЕНИЯ

Цифровой следящий привод вертикального наведения, содержащий гидронасос, гидромотор и первый датчик сигналов обратной связи (ДОС), редуктор (Р), причем первый ДОС механически связан с Р и гидромотором, качающуюся часть (КЧ) пусковой установки (ПУ), механически связанную с Р, схему управления приводом, цифровую вычислительную машину (ЦВМ) и пульт управления, при этом пульт управления электрически связан с ЦВМ, а система управления приводами имеет электрическую связь с ЦВМ, гидронасосом и первым ДОС, отличающийся тем, что в привод введены гидрораспределитель с электрическим управлением, связанный электрически со схемой управления приводом, а гидравлически входом - с выходом гидронасоса, первым выходом - с гидромотором; первый и второй гидроцилиндры, причем первый гидроцилиндр гидравлически связан со вторым выходом гидрораспределителя, второй гидроцилиндр - с третьим выходом гидрораспределителя, КЧ первой и второй ракетных ПУ, причем КЧ первой ракетной ПУ механически связана с первым гидроцилиндром, КЧ второй ракетной ПУ - со вторым гидроцилиндром, второй и третий ДОС, причем второй ДОС механически связан с КЧ первой ракетной ПУ, третий ДОС - с КЧ второй ракетной ПУ и оба имеют электрическую связь со схемой управления приводом, при этом гидрораспределитель выполнен с возможностью подключения выхода гидронасоса к гидромотору и гидроцилиндрам. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 49 294 (13) U1 (51) МПК G05B 11/06 (2000.01) F15B 7/02 (2000.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2005117937/22 , 09.06.2005 (24) Дата начала отсчета срока действия патента: 09.06.2005 (45) Опубликовано: 10.11.2005 4 9 2 9 4 R U Формула полезной модели Цифровой следящий привод вертикального наведения, содержащий гидронасос, гидромотор и первый датчик сигналов обратной связи (ДОС), редуктор (Р), причем первый ДОС механически связан с Р и гидромотором, качающуюся часть (КЧ) пусковой установки ( ...

УСТРОЙСТВО АВТОПОДЪЕМА СИДЕНЬЯ С КРЫШКОЙ УНИТАЗА

1. Устройство автоподъема сиденья с крышкой унитаза, содержащее сиденье с крышкой унитаза, шарнирно соединенное с унитазом и подъемным механизмом, отличающееся тем, что подъемный механизм связан с напольным адаптером. 2. Устройство по п.1, отличающееся тем, что подъемный механизм связан с напольным адаптером механически. 3. Устройство по п.1, отличающееся тем, что подъемный механизм связан с напольным адаптером телеприводом. 4. Устройство по п.1, отличающееся тем, что подъемный механизм связан с напольным адаптером электроприводом. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 64 038 (13) U1 (51) МПК A47K 13/10 (2006.01) F15B 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2007107122/22 , 26.02.2007 (24) Дата начала отсчета срока действия патента: 26.02.2007 (45) Опубликовано: 27.06.2007 (73) Патентообладатель(и): Гарбузов Валентин Георгиевич (RU), Гарбузов Иван Валентинович (RU) U 1 6 4 0 3 8 R U Ñòðàíèöà: 1 U 1 Формула полезной модели 1. Устройство автоподъема сиденья с крышкой унитаза, содержащее сиденье с крышкой унитаза, шарнирно соединенное с унитазом и подъемным механизмом, отличающееся тем, что подъемный механизм связан с напольным адаптером. 2. Устройство по п.1, отличающееся тем, что подъемный механизм связан с напольным адаптером механически. 3. Устройство по п.1, отличающееся тем, что подъемный механизм связан с напольным адаптером телеприводом. 4. Устройство по п.1, отличающееся тем, что подъемный механизм связан с напольным адаптером электроприводом. 6 4 0 3 8 (54) УСТРОЙСТВО АВТОПОДЪЕМА СИДЕНЬЯ С КРЫШКОЙ УНИТАЗА R U Адрес для переписки: 620075, г.Екатеринбург, ул. Ленина, 69, корп.14, кв.323, В.Г. Гарбузову (72) Автор(ы): Гарбузов Валентин Георгиевич (RU), Гарбузов Иван Валентинович (RU) RU 5 10 15 20 25 30 35 40 45 50 64 038 U1 Полезная модель относится к санитарно-гигиеническим предметам личного и домашнего обихода. Поднятие и опускание сиденья унитаза или ...

ГИДРАВЛИЧЕСКИЙ РЫЧАЖНЫЙ ГАЙКОВЕРТ

1. Гидравлический рычажный гайковерт, содержащий корпус с размещенным в нем гидроцилиндром с напорным и сливным каналами, рычаг, соединенный со штоком гидроцилиндра, и храповой механизм, включающий храповое колесо с отверстием под гайку или промежуточную гаечную головку и две собачки, отличающийся тем, что в гаечной головке установлен вал, на одном конце которого выполнены лыски, а на другом - выступ, и в котором в продольных отверстиях размещены винты, кроме этого, гайковерт снабжен упорным механизмом, выполненным в виде вилки, охватывающей лыски вала и опирающейся на корпус гайковерта. 2. Гайковерт по п.1, отличающийся тем, что каждый из винтов, размещенных в отверстиях вала, снабжен шестигранной головкой. 3. Гайковерт по п.1, отличающийся тем, что каждый из винтов, размещенных в отверстиях вала, выполнен с отверстием для размещения в нем воротка. 4. Гайковерт по п.1, отличающийся тем, что каждый из винтов, размещенных в отверстиях вала, снабжен рукояткой, шарнирно закрепленной на винте для возможности его вращения. 5. Гайковерт по п.1, отличающийся тем, что напорный и сливной каналы гидроцилиндра выполнены как единый напорно-сливной канал, а гидроцилиндр снабжен возвратной пружиной. 6. Гайковерт по п.1, отличающийся тем, что гаечная головка выполнена в виде единого узла с храповым колесом. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 65 419 (13) U1 (51) МПК B25B 21/00 (2006.01) F15B 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2007110500/22 , 21.03.2007 (24) Дата начала отсчета срока действия патента: 21.03.2007 (45) Опубликовано: 10.08.2007 (73) Патентообладатель(и): Кривошеин Евгений Николаевич (RU) Ñòðàíèöà: 1 U 1 6 5 4 1 9 U 1 Формула полезной модели 1. Гидравлический рычажный гайковерт, содержащий корпус с размещенным в нем гидроцилиндром с напорным и сливным каналами, рычаг, соединенный со штоком гидроцилиндра, и храповой механизм, включающий храповое колесо с ...

ГИДРАВЛИЧЕСКАЯ ПЕРЕДАЧА

Полезная модель относится к транспортному машиностроению, а именно к горнодобывающим, строительно-дорожным машинам и приводам вспомогательных агрегатов, в частности к гидросистемам, применяемым на транспортных средствах, более конкретно - к закрытого типа гидросистемам транспортных средств. Целью заявляемой полезной модели является повышение эксплуатационной надежности и долговечности, с одновременным повышением технологичности обеспечения подпорного давления. Поставленная цель достигается тем, что гидравлическая передача, содержащая образующие замкнутый гидрообъемный контур насос, предохранительный клапан, сообщающий напорную гидролинию, подключенную к насосу, со сливной гидролинией, подключенной к гидробаку, эжекторный насос, установленный в сливной гидролинии, всасывающий трубопровод которого сообщен с дренажными гидролиниями насоса и предохранительного клапана, и распределитель, характеризующаяся тем, что передача снабжена фильтром, связывающим гидробак, выполненный герметичным, со входом насоса, и подключенным к сливной гидролинии пневмогидроаккумулятора с заправочным устройством, причем после пневмогидроаккумулятора расположен эжекторный насос, связанный с герметичным гидробаком, содержащим заправочный вентиль, при этом распределитель выполнен четырехходовым трехпозиционным с соединением напорной гидролинии со сливной гидролинией в одной из позиций, а к рабочим отводам распределителя подключен гидроцилиндр с двумя направлениями потока, причем насос выполнен с одним направлением потока. Заявляемая гидравлическая передача может находить применение в транспортном машиностроении, горнодобывающих и строительно-дорожных машинах, приводах вспомогательных агрегатов. Преимущественно производится на предприятиях машиностроительной отрасли. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 195 329 U1 (51) МПК F15B 1/027 (2006.01) F15B 7/02 (2006.01) F16H 39/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F15B 1/027 ...

ГИДРАВЛИЧЕСКАЯ ПЕРЕДАЧА

Полезная модель относится к транспортному машиностроению, а именно - горнодобывающим, строительно-дорожным машинам и приводам вспомогательных агрегатов, в частности к гидросистемам, применяемым на транспортных средствах, и более конкретно - к закрытого типа гидросистемам транспортных средств. Целью заявляемой полезной модели является повышение эксплуатационной надежности и долговечности, с одновременным повышением технологичности обеспечения подпорного давления. Поставленная цель достигается тем, что гидравлическая передача, содержащая образующие замкнутый гидрообъемный контур насос и гидромотор с двумя направлениями потока, предохранительный клапан, сообщающий напорную гидролинию, подключенную к насосу, со сливной гидролинией, подключенной к гидробаку, эжекторный насос, установленный в сливной гидролинии, всасывающий трубопровод которого сообщен с дренажными гидролиниями насоса, гидромотора и предохранительного клапана, и распределитель, характеризующаяся тем, что передача снабжена фильтром, связывающим гидробак, выполненный герметичным, со входом насоса, и подключенным к сливной гидролинии пневмогидроаккумулятора с заправочным устройством, причем после пневмогидроаккумулятора расположен эжекторный насос, связанный с герметичным гидробаком, содержащим заправочный вентиль, при этом распределитель выполнен четырехходовым трехпозиционным с соединением напорной гидролинии со сливной гидролинией в одной из позиций, а к рабочим отводам распределителя подключен гидромотор, причем насос выполнен с одним направлением потока. Заявляемая гидравлическая передача может находить применение в транспортном машиностроении, горнодобывающих и строительно-дорожных машинах, приводах вспомогательных агрегатов. Преимущественно производится на предприятиях машиностроительной отрасли. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 195 330 U1 (51) МПК F15B 1/027 (2006.01) F15B 7/02 (2006.01) F16H 39/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ...

Linear unit

A linear unit for applying an axially acting force, composed of a rotational/translational gear ( 2 ) which has a threaded spindle ( 18 ) and a threaded nut ( 19 ) which are arranged in a gear housing ( 22 ), and of an electric motor ( 1 ) with a rotor ( 12 ) and with a stator ( 11 ) which are arranged in an electric motor housing ( 10 ). In order to simplify the set-up of the linear unit, while at the same time reducing the packaging space required, according to the invention the threaded spindle ( 18 ) is mounted rotatably and axially fixedly inside the gear housing ( 22 ) and is connected to the rotor ( 12 ) outside the gear housing ( 22 ).

Fluid pressure transmission device and robot hand device

A fluid pressure transmission device is equipped with a plurality of driving fluid pressure cylinders 37 1 , 37 2 , a plurality of driven fluid pressure cylinders 23, 24 with cylinder chambers 23 a, 24 a thereof being communicated with cylinder chambers 371 1 , 371 2 of the main driving fluid pressure cylinders 37 1 , 37 2 via fluid pressure transmission pipes 38 1 , 38 2 , and a sub driving fluid pressure cylinder 41 which is divided into two cylinder chambers 41 a, 41 b by a piston 412, and the fluid pressure generated by the main driving fluid pressure cylinders 37 1 , 37 2 is transmitted to the driven fluid pressure cylinders 23, 24. Pistons 371 1 , 371 2 are driven by the main motor 40, and the piston 412 is driven by the assistant motor 43. The fluid pressure transmission pipes 38 1 , 38 2 and the cylinder chambers 41 a, 41 b of the sub driving fluid pressure cylinder are connected via connecting pipes 42 1 , 42 2 .

Meterless hydraulic system having load-holding bypass

A hydraulic system is disclosed. The hydraulic system may have a pump, a hydraulic actuator, and first and second passages fluidly connecting the pump to the hydraulic actuator in a closed-loop. The hydraulic system may also have a control valve, and a load-holding valve configured to selectively lock movement of the hydraulic actuator. The load-holding valve may include a valve block at least partially defining a pump passage, an actuator passage, a control passage, a restricted passage connecting the actuator passage and the control passage, and a bypass passage connecting the actuator passage and the control passage. The load-holding valve may also include a valve element movable between a first position at which flow between the pump and the hydraulic actuator is blocked, and a second position at which fluid is allowed to flow between the pump and the hydraulic actuator, the valve element being spring-biased toward the first position.

Meterless hydraulic system having multi-actuator circuit

A hydraulic system is disclosed. The hydraulic system may have a pump, a first actuator, and a meterless circuit connecting the first actuator to the pump. The hydraulic system may also have a second actuator connected to the meterless circuit in parallel with the first actuator. The second actuator may be a variable-area linear actuator

Torque output control for swing pump

A hydraulic circuit including a hydraulic swing motor having a first port and a second port. A first motor conduit connected to the first port of the hydraulic swing motor, and a second motor conduit connected to the second port of the hydraulic swing motor. The hydraulic circuit further includes a pump to selectively supply a flow of pressurized hydraulic fluid to the hydraulic swing motor through the first and the second motor conduits. A controller electrically connected to the pump adjusts a torque output of the pump based on a swing speed of the hydraulic swing motor.

Hydrostatic drive for a machine

A hydrostatic drive including a hydrostatic pump configured to supply a transmission fluid. The hydrostatic drive further includes an axle motor and a drum motor. The axle motor is configured to drive a set of traction wheels and the drum motor is configured to drive a drum. The hydrostatic drive also includes an axle drive line and a drum drive line. The axle drive line and the drum drive line are connected to the axle motor and the drum motor respectively to supply the transmission fluid. A manifold integrally connected to the hydrostatic pump to operatively couple the axle drive line and the drum drive line with the hydrostatic pump.

Powered signal controlled hand actuated articulating device

An articulating device for aiding a user, such as, a surgeon or other medical practitioner, in manipulating a hand-actuated articulating device by providing a powered force used for moving the device, thus reducing or eliminating the need for the user to provide all the force required to move the device. The articulating device includes an input device, which receives one or more user inputs to direct a slave portion to perform work. The articulating device further includes a control portion that assists in transferring user input to the slave portion, and that further provides power assistance to at least partially drive the slave portion, in combination with the user input received by the input device.

PROCESS FOR THE PRODUCTION OF HYDRAULIC ENERGY AND PRODUCTION OF POTABLE WATER BY DIRECT OSMOSIS

The present invention relates to a process for the production of hydraulic energy by direct osmosis from two saline solutions having different concentrations made to pass through one or more modules of semipermeable membranes having a double inlet and outlet port, originally designed to execute the process of inverse osmosis, without a requirement to realise any technical modification to said modules of membranes. In this manner, an osmotic potential is produced in the membranes creating a current of solution having a pressure sufficient to produce hydraulic energy. A further object of the present invention is the installation designed to produce hydraulic energy according to the stated procedure and the use thereof, together with a desalination plant and a tertiary waste water treatment plant comprising the installation to produce hydraulic energy. 125-. (canceled)26. Process for the production of hydraulic energy by direct osmosis from two saline solutions having different concentrations , a first concentrated one and a second diluted one , characterized in that ,the concentrated saline solution is brine with a degree of salinity comprised between 5 and 100 g/l, and the diluted saline solution is brackish water from an effluent of a tertiary waste water treatment plant with a degree of salinity comprised between 0 and 50 g/l, and always below the degree of salinity of the brine;{'b': 1', '2', '3', '4', '5', '4', '5', '6', '7', '6', '7', '2', '1, 'the direct osmosis is carried out in at least one module () of inverse osmosis semipermeable membranes (), which comprises a casing (); two separate supply inlets (, ) for the solutions inside the module, a first supply inlet () for the brine and a second supply inlet () for the brackish water; two separate outlets (, ) for two flows generated inside the module by means of direct osmosis, a first outlet () for a diluted brine flow, and a second outlet () for a concentrated brackish water flow; and semipermeable membranes ...

HYDRAULIC TRANSMISSION CIRCUIT WITH MULTIPLE CAPACITIES

A hydraulic transmission circuit comprising three or four coupled hydraulic elementary motors, each elementary motor having a first and a second secondary enclosure. The circuit includes four distribution valves for which the respective outlet channels may be selectively connected to two main conduits for supplying fluid to and discharging fluid from the circuit. The outlet channels of the first and second valves are connected to at least one of the first secondary enclosures; those of the third and fourth valves are connected to at least one of the second secondary enclosures. Each of the elementary motors has a first secondary enclosure connected to a single valve from among the first or second valve and a second secondary enclosure connected to a single valve from among the third or fourth valve. The valve pairs thereby connected to said elementary motors respectively, are all distinct, two by two. 2. The circuit according to claim 1 , comprising exactly three elementary motors claim 1 , and wherein said outlet channels of said first claim 1 , second claim 1 , third and fourth distribution valve are respectively connected:to the first secondary enclosures of the first and second elementary motors;to the first secondary enclosure of the third elementary motor;to the second secondary enclosure of the first elementary motor;to the second secondary enclosures of the second and third elementary motors.3. The circuit according to claim 1 , comprising exactly four elementary motors claim 1 , and wherein said outlet channels of said first claim 1 , second claim 1 , third and fourth distribution valve are respectively connected:to the first secondary enclosures of the first and second elementary motors;to the first secondary enclosures of the third and fourth elementary motors;to the second secondary enclosures of the first and fourth elementary motors;to the second secondary enclosures of the second and third elementary motors.4. The circuit according to claim 1 , ...

Hydraulic Drive with Energy Recovery

A hydraulic drive device with energy recovery function, includes a pressure medium pump for supplying a consumer with pressure medium and a return line for removing the pressure medium from the consumer. The discharged pressure medium is returned under pressure to the suction side of the pressure medium pump. 1. A hydraulic drive device with an energy recovery function , comprising:a pressure medium pump for supplying at least one consumer with pressure medium; anda return line for discharging the pressure medium from the consumer,wherein the discharged pressure medium is returned under a predetermined or predeterminable recovery pressure to the suction side of the pressure medium pump.2. The hydraulic drive device as claimed in claim 1 , wherein the return line comes from the consumer and enters an intake line of the pressure medium pump.3. The hydraulic drive device as claimed in claim 2 , further comprising:a valve arranged in the intake line between the entry point of the return line and a pressure medium tank,wherein the valve is preferably a check valve, that only allows a flow of pressure medium from the tank to the pump.4. The hydraulic drive device as claimed in claim 2 , further comprising:a pressure compensator in the return line, which opens the return line when there is a predetermined or predeterminable discharge pressure and preferably when there is a predetermined or predeterminable pressure difference over an upstream throttle.5. The hydraulic drive device as claimed in claim 4 , further comprising:a pressure limiting valve, which is interposed in an overpressure line connected to the return line downstream from the pressure compensator and preloads the output side of the pressure compensator to the predetermined or predeterminable recovery pressure.6. The hydraulic drive device as claimed in claim 1 , further comprising:a pressure accumulator, which is charged by the volumetric recovery flow.7. The hydraulic drive device as claimed in claim 6 , ...

HYDRAULIC TEMPERATURE COMPENSATOR AND HYDRAULIC LIFT TRANSMITTER

The hydraulic temperature compensator has at least one longitudinally extensible hydraulic chamber and a gas-filled chamber which is at least partly enclosed by the hydraulic chamber, wherein the hydraulic chamber is subdivided into a first sub-chamber and a second sub-chamber which are hydraulically connected to each other by at least one throttle point and wherein the second sub-chamber adjoins the gas-filled chamber. The stroke transmitter has at least the hydraulic temperature compensator, a stroke actuator acting on the temperature compensator, and a further hydraulic chamber which is fluidically connected to the first sub-chamber of the hydraulic chamber of the temperature compensator, wherein the further hydraulic chamber is in fluidic connection with a displaceably mounted actuating element. 114-. (canceled)15. A hydraulic temperature compensator , comprising:a gas-filled chamber; an outer wall having an open end;', 'an inner wall having an open end, the inner wall being contactlessly inserted into the outer wall, the inner wall separating the second sub-chamber from the gas-filled chamber such that the inner wall at least partially defines the gas-filled chamber; and', 'a partition having an open end, the partition wall being contactlessly inserted between the outer wall and the inner wall, the partition separating the first sub-chamber from the second sub-chamber, the partition having a throttle point to connect the first and second sub-chambers to each other; and, 'a longitudinally extensible hydraulic chamber at least partly enclosing the gas filled chamber, the hydraulic chamber comprising a first sub-chamber and a second sub-chamber, the second sub-chamber adjoining the gas-filled chamber, the hydraulic chamber being formed bya common cover hermetically attached to the open end of the inner wall, the open end of the outer wall and the open end of the partition.16. The hydraulic temperature compensator as claimed in claim 15 , whereinthe inner wall and ...

Meterless hydraulic system having force modulation

A hydraulic system is disclosed. The hydraulic system may have a pump configured to draw low-pressure fluid from one of a first passage and a second passage and discharge fluid into the other of the first and second passages, and an actuator coupled to the pump via the first and second passages. The hydraulic system may also have at least a first control valve fluidly connected between the first and second passages to selectively direct fluid from one of the first and second passages to bypass the pump and flow into the other of the first and second passages. The hydraulic system may further have at least a second control valve fluidly connected in parallel with the at least a first control valve to selectively direct fluid from one of the first and second passages to bypass the actuator and flow into the other of the first and second passages.

Independent blade control system with hydraulic cyclic control

According to one embodiment, a radial fluid device includes a cylinder block having a plurality of radially extending cylinders, a plurality of pistons, and a cam disposed about the plurality of radially extending cylinders. A first linear control is coupled to the cam and operable to reposition the cam along a first axis. A second linear control is coupled to the cam and operable to reposition the cam along a second axis. A third linear control is coupled to the cam and operable to resist movement of the cam along a third axis.

Speed Regulator

The invention relates to a speed regulator of a bicycle, which speed regulator is in the rear hub or the pedal centre of the bicycle, which includes one or more hydraulic pumps which is rotated by a rear pinion or by the pedals, which hydraulic pump rotates one or more hydraulic motors, which hydraulic motor/hydraulic motors rotates/rotate the rear wheel of the bicycle. According to the invention, the rotation speed of the hydraulic pump can be steplessly changed when the rear pinion or the pedals rotate at constant speed. 1. A speed regulator of a bicycle , in whichspeed regulator is in the rear hub or the pedal centre of the bicycle, which includes one or more hydraulic pumps, which is (are) rotated by a rear pinion or by the pedals,the hydraulic pump rotates one or more hydraulic motors,hydraulic motor/hydraulic motors rotates/rotate the rear wheel of the bicycle, andthere are means for changing the rotation speed of the hydraulic motor steplessly when the rear pinion or the pedals rotate at constant speed.2. A speed regulator of a bicycle according to claim 1 , in whichthere are means for adjusting volumes of a pressure chamber and a return chamber of the hydraulic pump.3. A speed regulator of a bicycle according to claim 1 , in whichthere are means for changing a pumping power of the hydraulic motor steplessly when the rear pinion or the pedals rotate at constant speed.4. A speed regulator of a bicycle according to claim 3 , in whichthere are means for adjusting volumes of a pressure chamber and a return chamber of the hydraulic motor.5. A speed regulator of a bicycle according to claim 2 , in whichthere are means for changing a pumping power of the hydraulic motor steplessly when the rear pinion or the pedals rotate at constant speed;there are means for adjusting volumes of a pressure chamber and a return chamber of the hydraulic motor; andthe volumes of the chambers of the hydraulic pump and the hydraulic motor are adjustable by a speed controller.6. A speed ...

MULTIPLE FUNCTION HYDRAULIC SYSTEM WITH A VARIABLE DISPLACEMENT PUMP AND A HYDROSTATIC PUMP-MOTOR

A hydraulic system includes a first pump and a plurality of valves that control fluid flow from the first pump to several actuators. Variable source orifices in the control valves are connected in parallel between the first pump and a node, and variable bypass orifices in the control valves are connected in series between the node and a tank. Pressure at the node controls displacement of the first pump. Each control valve also has a metering orifice for varying fluid flow between the node and one of the actuators. A hydrostatic pump-motor, coupled between two ports of a given actuator, is driven in a motoring mode by fluid exiting one of those ports. In a pumping mode, the hydrostatic pump-motor forces lower pressure fluid exhausting from one port into the other port of the given actuator. 1. A hydraulic system for a machine comprising:a plurality of hydraulic actuators, including a given hydraulic actuator that has a cylinder and piston arrangement with a first port and a second port;a first pump for furnishing fluid for operating the plurality of hydraulic actuators;a tank for receiving fluid from the plurality of hydraulic actuators;a plurality of control valves, each of which selectively controls fluid flow between an associated one of the plurality of hydraulic actuators and both the first pump and the tank, the plurality of control valves including a given control valve having a first workport connected to the first port of the given hydraulic actuator and a second workport connected to the second port; anda hydrostatic pump-motor operatively connected to convey fluid between the first and second ports of the given hydraulic actuator, and having a motoring mode in which the hydrostatic pump-motor is driven by fluid flowing out of one of the first and second ports at a higher pressure than fluid flowing into the other one of the first and second ports, and having a pumping mode in which fluid is pumped by the hydrostatic pump-motor when fluid flowing out of one ...

Gerotor pump, a gerotor motor and a gerotor transmission system

A gerotor pump ( 1 ) comprising; a housing ( 2 ) which comprises a first and a second supply socket ( 18 a , 18 b; 19 a, 19 b ), an inner rotor ( 4 ); and an outer rotor ( 5 ) rotatably located relative the housing ( 2 ); wherein the inner rotor ( 4 ) is located within the outer rotor ( 5 ), and lobes ( 13, 4 ) of the inner and the outer rotor ( 4, 5 ) engaging, the inner rotor ( 4 ) is centred around an axis ( 15 b) which is eccentric from an axis of rotation ( 15 ) of said outer rotor ( 5 ), wherein a pressure chamber ( 7 ) with a high pressure and a low pressure section, is defined between the inner and outer rotor ( 4, ), characterised in, that the inner rotor ( 4 ) is rotatably arranged on a shaft cylinder ( 10 b ) which is fixed at one end of a central drive shaft ( 10 ) of the pump ( 1 ) and is centred about said rotational axis ( 15 b ), whereby said inner rotor ( 4 ) wanders in said outer rotor ( 5 ) when said central drive shaft ( 10 ) is turned, and wherein the inner rotor ( 4 ) is provided with radial supply conduits ( 9 ) extending from the pressure chambers ( 7 ) to the shaft cylinder ( 10 b ), and wherein said shaft cylinder ( 10 b ) is provided with at least a first and a second cylinder opening ( 16, 17 ), such that the first cylinder opening ( 16 ) is axially displaced relative the second cylinder opening ( 17 ), and said first opening ( 16 ) is arranged such that it is connected to said high pressure section, and said second cylinder opening ( 17 ) is arranged such that it is connected to said low pressure section.

SYSTEM AND METHOD FOR CONTROLLING ENGINE REVOLUTIONS FOR HYBRID CONSTRUCTION MACHINE

A system and method for controlling engine revolutions for a hybrid construction machine, including an engine, a hydraulic pump which is driven by the engine to drive a hydraulic actuator with discharged hydraulic fluid, a motor-generator which is driven by the engine to generate electricity and to drive the hydraulic pump as a motor supplementing the engine, an energy storage device which is charged with electric energy generated by the motor-generator and which supplies the electric energy for motor operation of the motor-generator, a torque detection unit for detecting an output torque of the hydraulic pump that is required to drive the hydraulic actuator, and a hybrid control unit for controlling the motor operation of the motor-generator to supplement the engine output if the change of the output torque of the hydraulic pump exceeds a predetermined level and it is determined that an engine revolution drop will occur. 1. (canceled)2. (canceled)3. A system for controlling engine revolutions for a hybrid construction machine , including an engine , a hydraulic pump which is driven by the engine to drive a hydraulic actuator with discharged hydraulic fluid , a motor-generator which is driven by the engine to generate electricity and to drive the hydraulic pump as a motor supplementing the engine , and an energy storage device which is charged with electric energy generated by the motor-generator and which supplies the electric energy for motor operation of the motor-generator , the system comprising:torque detection means for detecting an output torque of the hydraulic pump that is required to drive the hydraulic actuator;hybrid control means for controlling the motor operation of the motor-generator so as to supplement the engine output if the change of the output torque of the hydraulic pump detected by the torque detection means exceeds a predetermined level and it is determined that an engine revolution drop will occur;driving control means for controlling ...

Concentric mechanism electric brake booster and master cylinder assembly

An electric booster and master brake cylinder assembly includes a master cylinder housing, a booster housing, a primary piston, and a ball screw assembly. The master cylinder housing defines a piston bore. The booster housing is attached to the master cylinder housing and defines a bore. The primary piston is slidably positioned within the piston bore and has an axially extending end portion that extends into the bore. The ball screw assembly is at least partially disposed within the bore of the booster housing.

Liquid lithium supply and regulation

Methods and systems for the production and delivery of lithium metal of high purity are provided. More particularly, methods and systems for lithium metal purification, delivery and deposition are provided. In at least one aspect, a liquid lithium delivery system is provided. The liquid lithium delivery system comprises a liquid lithium delivery module. The liquid lithium delivery system comprises a lithium storage region operable to store the liquid lithium, a pumping region operable to move liquid lithium through the lithium delivery, and a flow control region. The pumping region comprises an electromagnetic pump operable to move the liquid lithium using electromagnetism. The flow control region operable to control the flow of liquid lithium, comprising one or more valves operable to control the flow of the liquid lithium, wherein the pumping region is positioned downstream from the lithium storage region and upstream from the flow control region.

POWER TAKE OFF SYSTEM FOR WAVE ENERGY CONVERTOR

A device for generating electrical energy from mechanical motion includes a surface float and at least one force modifier disposed at least partially within the interior of the surface float, the force modifier to receive an input force at a pumping cylinder and apply a modified force to a generator through a driving cylinder. The pumping cylinder or the driving cylinder is a tandem cylinder. 1. A device for generating electrical energy from mechanical motion , the device comprising:a surface float; andat least one force modifier disposed at least partially within an interior of the surface float, the force modifier to receive an input force at a pumping cylinder and apply a modified force to a generator through a driving cylinder, wherein the pumping cylinder comprises a pumping tandem cylinder or the driving cylinder comprises a driving tandem cylinder.2. The device of claim 1 , wherein the generator is a linear generator.3. The device of claim 1 , wherein the modified force applied to the generator is greater in magnitude than the input force.4. The device of claim 1 , wherein the modified force applied to the generator is smaller in magnitude than the input force.5. The device of claim 1 , wherein the pumping cylinder comprises a pumping tandem cylinder and the driving cylinder comprises a driving tandem cylinder.6. The device of claim 5 , wherein the pumping tandem cylinder comprises a first pumping chamber and a second pumping chamber and the driving tandem cylinder comprises a first driving chamber and a second driving chamber claim 5 , and wherein the device further comprises a plurality of valves disposed between the pumping tandem cylinder and the driving tandem cylinder.7. A method for generating electrical energy from mechanical motion claim 5 , the method comprising:receiving an input force from a mechanical motion;modifying the input force, wherein modifying the input force further comprises receiving the input force at a pumping cylinder and ...

Compensation Reservoir

In order to improve a compensation reservoir for a hydraulic operating system, in particular for a hydraulic brake system or a clutch system, comprising a housing in the interior of which a storage chamber which is provided for storing hydraulic medium is bounded by a separating element which changes its shape in accordance with a volume of the storage chamber, it is proposed that the housing engages over the separating element in all of its shapes, which correspond to possible volumes of the storage chamber, in a protective manner, that a filling level-indicating region of the separating element changes its position in the housing when the volume which is taken up by the hydraulic medium which is stored in the storage chamber changes, and this position in each case represents a filling level-indicating position, and that the filling level-indicating position which is situated within the housing is visible from outside the housing through a viewing region of the housing. 1. Compensation reservoir for a hydraulic operating system , in particular a hydraulic brake system or a clutch system , comprising a housing in the interior of which a storage chamber which is provided for storing hydraulic medium is bounded by a separating element which changes its shape in accordance with a volume of the storage chamber , the housing engages over the separating element in all of its shapes , which correspond to possible volumes of the storage chamber , in a protective manner , in that a filling level-indicating region of the separating element changes its position in the housing when the volume which is taken up by the hydraulic medium which is stored in the storage chamber changes , and this position in each case represents a filling level-indicating position , and the filling level-indicating position which is situated within the housing is visible from outside the housing through a viewing region of the housing.2. Compensation reservoir according to claim 1 , wherein the ...

Apparatus to transmit axial force to a snubbing unit's slip assembly, including during rotation

In one aspect there is provided an apparatus to transmit hydraulic force to a snubbing unit's traveling slip assembly. The apparatus comprises a first hydraulic power source having a hydraulic connection to the traveling slip assembly, a hydraulic power source actuator to actuate the hydraulic power source to cause it to transmit hydraulic force to or from the traveling slip assembly. Rotation isolation means are provided to rotationally isolate the hydraulic power source actuator from the first hydraulic power source, and to transfers axial and radial loads between the hydraulic power source actuator and the first hydraulic power source. The first hydraulic power source is mounted to the traveling slip assembly so as to co-rotate therewith. 1. An apparatus to transmit hydraulic force to a snubbing unit's traveling slip assembly , the apparatus comprising:{'b': '32', 'a first hydraulic power source having a hydraulic connection to the traveling slip assembly;'}{'b': 65', '32, 'a hydraulic power source actuator to actuate the hydraulic power source to cause it to transmit hydraulic force to or from the traveling slip assembly; and'}{'b': 65', '32', '65', '32, 'rotation isolation means to rotationally isolate the hydraulic power source actuator from the first hydraulic power source , and to transfers axial and radial loads between the hydraulic power source actuator and the first hydraulic power source ;'}{'b': '32', 'wherein the first hydraulic power source is mounted to the traveling slip assembly so as to co-rotate therewith.'}232c.. The apparatus of wherein the first hydraulic power source comprises at least one first hydraulic ram cylinder3323232132csb. The apparatus of wherein the at least one first hydraulic ram cylinder comprises a shaft having a longitudinal axis capable of moving an interior sealed piston within a cylinder that contains a predetermined amount of hydraulic fluid.432321c. The apparatus of wherein the at least one first hydraulic ram cylinder ...

WAVE ENERGY CONVERTER

A wave energy converter includes a surface float including a non-axisymmetric profile, a reaction plate configured to be submerged below a water surface, and more than one flexible tether, each mechanically coupled to both the surface float and the reaction plate, the reaction plate having a moment of inertia in pitch and roll greater than a moment of inertia in pitch and roll of the surface float. 1. A wave energy converter , comprising:a surface float comprising a non-axisymmetric profile;a reaction plate configured to be submerged below a water surface;more than one flexible tether, each mechanically coupled to both the surface float and the reaction plate; andthe reaction plate comprising a moment of inertia in pitch and roll greater than a moment of inertia in pitch and roll of the surface float.2. The wave energy convertor of claim 1 , wherein the surface float is configured to move in three motions comprising heave claim 1 , pitch claim 1 , and roll claim 1 , and wherein two of the three motions have different natural periods claim 1 , such that these natural periods will be distributed across the significant period range where the cumulative wave energy content for the deployment location.3. The wave energy convertor of claim 1 , wherein the surface float comprises a load transfer unit for each flexible tether to enable forces to be efficiently transmitted to a linear hydraulic gearbox claim 1 , eliminating any off-axis loads.4. The wave energy convertor of claim 1 , wherein the reaction plate comprises a geometry configured to provide asymmetric hydrodynamic forces in an up direction and a down direction.5. The wave energy convertor of claim 1 , wherein at least one tether is mechanically coupled to at least one linear hydraulic gearbox.6. The wave energy convertor of claim 5 , wherein the at least one linear hydraulic gearbox is mechanically coupled to at least one linear generator.7. The wave energy convertor of claim 5 , wherein the at least one linear ...

Mechanically Activated CAM Extension Cylinder

A brake actuator for a brake rigging in a railway brake system includes a brake cylinder; a piston rod disposed on the brake cylinder and connected to a piston assembly in the brake cylinder, the piston rod being configured to be moved by the piston assembly in a reciprocal axial motion and including at least one lateral protrusion extending therefrom; and an extension cylinder disposed on the brake cylinder at least partially surrounding the piston rod, the extension cylinder including at least one cam surface engaged by the at least one lateral protrusion of the piston rod. The extension cylinder is configured to be connected to a hand brake mechanism and to be actuated by the hand brake mechanism to rotate such that the cam surface engages the lateral protrusion of the piston rod to cause the piston rod to move to the extended position.

HYDRAULIC TOOLS WITH RAPID ADVANCE

Hydraulic tools having extendable rams for performing various functions such as crimping are described. The tools include a hydraulic system that enables the ram to be rapidly advanced. Methods using the hydraulic systems and tools are also described. 1. A hydraulic system comprising:a reservoir adapted to contain hydraulic fluid;a hydraulic cylinder defining a hollow interior and including a ram disposed therein, the ram defining a first face and an oppositely directed second working face, the interior of the cylinder and the first face of the ram defining a primary chamber, the ram positionable through a first phase of ram extension and a second phase of ram extension;a pushrod assembly including a housing defining a hollow interior and a pushrod positionably disposed therein, the pushrod defining a first end and an oppositely directed second end, the interior of the housing and the first end of the pushrod defining a secondary chamber, the pushrod and the ram being in at least periodic operable engagement such that extension of the pushrod causes extension of the ram;wherein the pushrod and housing include provisions to preclude fluid flow between the primary chamber and the secondary chamber when the pushrod is within a range of positions corresponding to the first phase of ram extension, and permit fluid flow between the primary chamber and the secondary chamber when the pushrod is within a range of positions corresponding to the second phase of ram extension.2. The hydraulic system of wherein the provisions include the pushrod defining a circumferential outer surface generally extending between the first end and the second end of the pushrod and a flat surface region extending along a length portion of the pushrod from the first end of the pushrod.3. The hydraulic system of wherein the provisions further include a recessed band extending around at least a portion of the circumference of the pushrod claim 2 , the recessed band located between the first end and ...

INITIALIZATION METHOD FOR ELECTRO-MECHANICAL BRAKE

An initialization method for an EMB may include: opening an in-valve for controlling a flow path through which brake oil is introduced from a master cylinder, closing an out-valve for controlling a flow path through which the brake oil is transferred to an accumulator part, and driving a motor to move a master piston forward; when the master piston is moved by a preset distance after coming in contact with a slave piston which is brought in contact with an inner pad, closing the in-valve and driving the motor to move the master piston backward; when the contact between the master piston and the slave piston is released, determining whether a gap between the master piston and the slave piston is equal to or more than a preset gap; and when the gap is equal to or more than the preset gap, ending initialization of the EMB. 1. An initialization method for an electro mechanical brake (EMB) , comprising:opening an in-valve for controlling a flow path through which brake oil is introduced from a master cylinder, closing an out-valve for controlling a flow path through which the brake oil is transferred to an accumulator part, and driving a motor to move a master piston forward;when the master piston is moved by a preset distance after coming in contact with a slave piston which is brought in contact with an inner pad for forming a braking force, closing the in-valve and driving the motor to move the master piston backward;when the contact between the master piston and the slave piston is released, determining whether a gap between the master piston and the slave piston is equal to or more than a preset gap; andwhen the gap is equal to or more than the preset gap, ending initialization of the EMB.2. The initialization method for claim 1 , wherein the determining of whether the gap between the master piston and the slave piston is equal to or more than the preset gap comprises:when it is determined that the gap is less than the preset gap, opening the out-valve, and driving ...

System to Pump Fluid and Control Thereof

A fluid system includes a variable-speed and/or a variable-torque pump to pump a fluid, at least one proportional control valve assembly, an actuator that is operated by the fluid to control a load, and a controller that establishes a speed and/or torque of the pump and a position of the at least one proportional control valve assembly. The pump includes at least one fluid driver that provides fluid to the actuator, which can be, e.g., a fluid-actuated cylinder, a fluid-driven motor or another type of fluid-driven actuator that controls a load. Each fluid driver includes a prime mover and a fluid displacement assembly. The fluid displacement assembly can be driven by the prime mover such that fluid is transferred from the inlet port to the outlet port of the pump. 130.-. (canceled)31. A hydraulic system comprising: at least one electric motor,', 'a gear assembly configured to be driven by the at least one electric motor such that fluid is transferred from an inlet port of the hydraulic pump to an outlet port of the hydraulic pump; and', 'a control valve disposed on a side of the inlet port or the outlet port, wherein the first control valve is configured to be throttled; and, 'a hydraulic pump to provide hydraulic fluid to a hydraulic actuator having first and second ports, the hydraulic pump including,'}a controller configured to operate the at least one electric motor to control a flow in the hydraulic system to a flow set point or a pressure in the hydraulic system to a pressure set point, the controller further configured to operate the control valve to control the flow in the hydraulic system to the flow set point or the pressure in the hydraulic system to the pressure set point.32. The hydraulic system of claim 31 , wherein the hydraulic system is a closed-loop system.33. The hydraulic system of claim 31 , wherein the control valve is throttleable between 0% and 100%.34. The hydraulic system of claim 31 , wherein the control valve is a ball valve.35. The ...

SERVO REGULATOR

A servo regulator includes a servo piston coupled with a swash plate, a pressure chamber provided to face an end portion of the servo piston, a spool configured to control a pressure in the pressure chamber by being moved by a solenoid, a biasing member configured to bias the spool against a thrust of the solenoid, and a feedback portion configured to change a biasing force of the biasing member in accordance with tilting of the swash plate, wherein the feedback portion is coupled with the swash plate via the servo piston. 1. A servo regulator for controlling tilting of a swash plate of a variable volume piston pump , comprising:a servo piston slidably accommodated in a case and coupled with the swash plate;a pressure chamber provided to face an end portion of the servo piston;a spool configured to control a pressure in the pressure chamber by being moved by a solenoid;a biasing member configured to bias the spool against a thrust of the solenoid; anda feedback portion configured to change a biasing force of the biasing member in accordance with the tilting of the swash plate, whereinthe feedback portion is coupled with the swash plate via the servo piston.2. The servo regulator according to claim 1 , whereinan outer peripheral surface of the servo piston is formed with an annular groove into which the feedback portion is inserted.3. The servo regulator according to claim 2 , whereinthe feedback portion extends in a tangent direction of the annular groove.4. The servo regulator according to claim 1 , wherein a first case member mounted on the variable volume piston pump, the first case being configured to accommodate the servo piston; and', 'a second case member mounted on the first case member, the second case member being configured to accommodate the spool and the biasing member., 'the case includes5. The servo regulator according to claim 4 , whereinthe feedback portion inserts an insertion hole formed in the second case member; andthe second case member is ...

CONNECTING AND DISCONNECTING DEVICE OF CLUTCH

A connecting and disconnecting device of a clutch includes a clutch pedal, a clutch cylinder, a depressing force transmission mechanism, and an actuator. The depressing force transmission mechanism includes a separation mechanism that connects and disconnects a depressing force transmission path of the depressing force transmission mechanism, the separation mechanism includes an input piston to which the depressing force from the clutch pedal is input, an output piston for outputting a clutch operating hydraulic pressure to the clutch cylinder, a first oil chamber provided between the input piston and the output piston, and an electromagnetic valve provided to make a connection or disconnection between the first oil chamber and a reservoir tank connected to the first oil chamber, and the actuator is connected to transmit power to the output piston of the separation mechanism. 1. A connecting and disconnecting device of a clutch , the connecting and disconnecting device comprising:a clutch pedal configured to be operated by a driver;a clutch cylinder;a depressing force transmission mechanism configured to transmit a depressing force, with which the clutch pedal is depressed, to the clutch cylinder; andan actuator configured to generate power for connecting and disconnecting the clutch through the depressing force transmission mechanism, wherein:the depressing force transmission mechanism includes a separation mechanism that connects and disconnects a depressing force transmission path of the depressing force transmission mechanism; an input piston to which the depressing force from the clutch pedal is input,', 'an output piston that outputs a clutch operating hydraulic pressure to the clutch cylinder,', 'a first oil chamber provided between the input piston and the output piston, and', 'an electromagnetic valve provided to make a connection or disconnection between the first oil chamber and a reservoir tank connected to the first oil chamber; and, 'the separation ...

Sealing High Pressure Flow Devices

Apparatus and method contemplating a high pressure fluid end assembly having a body defining a body bore and defining a recess in the body intersecting the body bore. A closure is joined to the body and forms a sealing surface. A seal is mounted to the body in the recess and configured to extend from the recess beyond the body bore to seal against the sealing surface formed by the closure. 1. A fluid end assembly , comprising:a housing having a first conduit extending therethrough, and a second conduit extending therethrough that intersects the first conduit;an endless groove formed in the housing such that the groove surrounds the second conduit;a seal positioned within the groove;a tubular sleeve installed within the second conduit such that at least a portion of the sleeve engages with the seal; anda reciprocating plunger disposed at least partially within the sleeve.2. The fluid end assembly of claim 1 , further comprising:a closure element installed within the first conduit.3. The fluid end assembly of in which the closure element is a plug sized to fully block fluid flow within the first conduit.4. The fluid end assembly of in which the first conduit is orthogonal to the second conduit.5. The fluid end assembly of in which the groove is characterized by a pair of parallel side walls joined by a base.6. The fluid end assembly of in which the groove opens towards a centerline of the second conduit.7. The fluid end assembly of in which at least a portion of the housing is configured to contain a fluid having a pressure of at least 8 claim 1 ,000 pounds per square inch.8. The fluid end assembly of in which the plunger is configured to engage with an engine having a power output of at least 2 claim 1 ,250 horsepower.9. The fluid end assembly of in which the endless groove is characterized as the first groove claim 1 , and further comprising:a second endless groove formed in the housing such that the second groove surrounds the first conduit.10. The fluid end ...

MOBILE HYDRAULIC GENERATOR AND CONTROL METHOD THEREOF

Disclosed are a mobile hydraulic generator having rapid response by scattering a small motor for generating a flow of fluid and a small pump, and a control method thereof. The mobile hydraulic generator includes: a flow generator including n pumps operated by n motors to generate an amount of a hydraulic fluid; a proportional hydraulic control valve to control output hydraulic pressure according to the amount of the hydraulic fluid; a pressure sensor to detect the output hydraulic pressure; and a hydraulic servo loop controller to which required hydraulic pressure and required amount of fluid are input by a user, to which feedback the output hydraulic pressure, to generate a pressure control signal for controlling the proportional hydraulic control valve based on the required hydraulic pressure and a change amount of the output hydraulic pressure and to generate an RPM input signal for controlling RPM of the n motors. 1. A mobile hydraulic generator comprising:a flow generator including n pumps operated by n motors to generate an amount of a hydraulic fluid;a proportional hydraulic control valve to control output hydraulic pressure according to the amount of the hydraulic fluid;a pressure sensor to detect the output hydraulic pressure; and a hydraulic servo loop controller to generate a pressure control signal for controlling the proportional hydraulic control valve based on a required hydraulic pressure and a change amount of the output hydraulic pressure and to generate an RPM input signal for controlling RPM of the n motors, respectively,wherein the required hydraulic pressure and a required amount of fluid are input by a user, and the output hydraulic pressure is feedbacked to the hydraulic servo loop controller.2. The mobile hydraulic generator of claim 1 , wherein the pressure control signal is calculated by combining feedforward calculation which is based on the required hydraulic pressure and proportional calculation claim 1 , integral calculation claim 1 , ...

Transmitter Unit

In order to improve a transmitter unit, especially for a hydraulic brake system, comprising a housing body, a piston which is arranged in the housing body able to move between a starting disposition and a pressure disposition, a pressure chamber bounded by the housing body and the piston, a reservoir for the supply of hydraulic fluid connected by a connection channel to the pressure chamber, a valve unit, which in an open position allows the connection between the reservoir and the pressure chamber and in a closed position breaks this connection, as well as a connection opening for the routing of pressurized hydraulic fluid from the pressure chamber for example to connected hydraulic brake cylinder, so that an escaping of air bubbles from the pressure chamber is more easily possible, it is proposed that in a functional orientation of the transmitter unit, the connection channel opens into a highest end region of the pressure chamber in regard to a direction of gravity. 1. Transmitter unit , especially for a hydraulic brake system or for a hydraulic clutch system , comprising a housing body , a piston which is arranged in the housing body able to move between a starting disposition and a pressure disposition , a pressure chamber bounded by the housing body and the piston , a reservoir for the supply of hydraulic fluid connected by a connection channel to the pressure chamber , a valve unit , which in an open position allows the connection between the reservoir and the pressure chamber and in a closed position breaks this connection , as well as a connection opening for the routing of pressurized hydraulic fluid from the pressure chamber for example to a connected hydraulic brake cylinder ,in a functional orientation of the transmitter unit, the connection channel opens into a highest end region of the pressure chamber in regard to a direction of gravity.2. Transmitter unit according to claim 1 , wherein the housing body encloses the pressure chamber claim 1 , the ...

Sealing High Pressure Flow Devices

Apparatus and method contemplating a high pressure fluid end assembly having a body defining a body bore and defining a recess in the body intersecting the body bore. A closure is joined to the body and forms a sealing surface. A seal is mounted to the body in the recess and configured to extend from the recess beyond the body bore to seal against the sealing surface formed by the closure. 1. A fluid end assembly , comprising:a housing having an external surface and an internal chamber;a first conduit formed in the housing and having first and second sections, each section independently interconnecting the internal chamber and the external surface;a second conduit formed in the housing, intersecting the first conduit and independently interconnecting the internal chamber and the external surface; andan endless groove formed in the wall or walls defining one of the conduits and extending concentrically around that conduit.2. The fluid end assembly of in which the first conduit is orthogonal to the second conduit.3. The fluid end assembly of in which the first and second sections are aligned and situated on opposite sides of the internal chamber.4. The fluid end assembly of in which the second conduit has aligned third and fourth sections situated on opposite sides of the internal chamber.5. The fluid end assembly of further comprising a closure claim 1 , element that is installed within one of the conduits.6. The fluid end assembly of further comprising a sealing element interposed between the closure element and the wall or walls of the conduit the closure element is installed within claim 5 , in which the sealing element is not closely received within a groove formed in the closure element.7. The fluid end assembly of in which the closure element is a plug sized to fully block fluid flow within the conduit it is installed within.8. The fluid end assembly of in which the plug is installed within the first conduit.9. The fluid end assembly of in which the closure ...

METHOD AND SYSTEM FOR THE HYDRAULIC CONTROL OF A CONCRETE PLACING BOOM

A method and system for the hydraulic control of a concrete placing boom () comprising a plurality of boom arms (), wherein hydraulic drive cylinders () for the boom arms (), which are connected to one another in an articulated manner, are controlled by a hydraulic circuit (), wherein a supply pressure is supplied via a hydraulic pump () to the hydraulic circuit (), and wherein a pressure signal is captured in the drive cylinders () by at least one pressure sensor () for each cylinder. The maximum pressure in the drive cylinders () is determined from the pressure signals and the supply pressure is adjusted by an electronic control unit () according to the maximum pressure. 1. A method for the hydraulic control of a concrete placing boom comprising:providing the concrete placing boom with a plurality of boom arms wherein the plurality of boom arms are connected to one another in an articulated manner and wherein hydraulic drive cylinders for the boom arms are controlled by a hydraulic circuit which includes a hydraulic pump;supplying a supply pressure to the hydraulic circuit with the hydraulic pump;providing at least one pressure sensor for each of the hydraulic drive cylinders and generating a pressure signal with each of the pressure sensors; andwherein the maximum pressure in the drive cylinders is determined from the pressure signals and the supply pressure is adjusted by an electronic control unit as a function of the maximum pressure.2. The method according to wherein the pressure signals are transmitted as electrical signals via electrical signal lines from the pressure sensors to the electronic control unit.3. The method according to wherein the pressure sensors sense pressure directly on the bottom side and/or the rod side of the drive cylinder.4. The method according to wherein the electrical signals are transmitted to a comparator of the control device formed by an electronic circuit or software.5. The method according to wherein the supply pressure is ...

Loop-flushing-system for hydrostatic apparatus

A hydraulic loop-flushing device ( 50 ) for a hydrostatic apparatus ( 1 ) comprising a valve housing ( 8 ) having a cylindrical valve bore ( 9 ) with a high pressure inlet ( 5 or 6 ), a low pressure inlet ( 6 or 5 ) and a discharge outlet ( 7 ). A first flushing valve spool ( 12 ) is arranged elastically pre-stressed within the valve bore ( 9 ) for enabling a fluid connection between the low pressure inlet ( 6 or 5 ) and the discharge outlet ( 7 ) by means of a first fluid channel ( 16 ). Further, a shuttle valve spool ( 22 ) is arranged elastically pre-stressed within the valve bore ( 9 ) for further enabling the fluid connection between the low pressure inlet ( 6 or 5 ) and the discharge outlet ( 7 ) by means of a fluid passageway ( 29 ). The first flushing valve spool ( 12 ) is moveable into an open position, in which the first fluid channel ( 16 ) is open, if the fluid pressure at the low pressure inlet ( 6 or 5 ) exceeds a first threshold value, and the shuttle valve spool ( 22 ) is moveable into an open position, in which the fluid passageway ( 29 ) is open for connecting the low pressure inlet ( 6 or 5 ) with the discharge outlet ( 7 ), if the pressure difference between the high pressure inlet ( 5 or 6 ) and the low pressure inlet ( 6 or 5 ) exceeds a second threshold value. For this the first flushing valve spool ( 12 ) and the shuttle valve spool ( 22 ) are arranged concentrically and moveable relative to each other, and the fluid connection between the low pressure inlet ( 6 or 5 ) and the discharge outlet ( 7 ) is enabled only, if both the first flushing valve spool ( 12 ) and the shuttle valve spool ( 22 ) are in the respective open positions.

Pre-filling device for a braking system comprising a hydro-booster device and operating method thereof

A pre-filling device for a braking system. The pre-filling device includes a pre-filling channel, a pre-filling pressure being inside the channel when the braking system is in a rest and hydro-boost position, and a mechanical valve configured to be opened following a transition from the rest and hydro-boost position to a working position of the braking system; and a hydraulic valve cooperating with the mechanical valve setting the pre-filling pressure inside the channel. The hydraulic valve includes in a first area, facing the mechanical valve, a hole communicating with the channel, and in a second area, hydraulically isolated from the first area, a preloaded resilient element in a chamber held at atmospheric pressure. The hydraulic valve is configured to be connected or not to be connected, by a reciprocating movement inside the channel, to a hydro-booster device and to keep a predetermined pre-filling pressure upon varying of the hydro-boost pressure.

Construction Machine

To make it possible to prevent a decrease in work speed due to a decrease in the speed of a given actuator when an operator unintentionally performs a fine operation of the control lever of the other actuator in a state in which the given actuator is driven by the hydraulic fluid delivered from a plurality of pumps, a controller ( 41 ) sets, as a composite dead zone line serving as a boundary of a composite dead zone, a composite dead zone line such that as an operation amount in one direction of a control lever ( 12 L) or ( 13 L) of a control lever device ( 12 ) or ( 13 ) is increased, the width of the composite dead zone corresponding to an operation amount in the other direction of the control lever is widened, and corrects the operation amount in the other direction such that the demanded flow rate of an actuator increases from zero, when the control lever is operated in the other direction in a state in which the operation amount in the one direction of the control lever remains within a range of the composite dead zone, and the operation amount in the other direction exceeds the composite dead zone line.

SOFT ROBOTIC ACTUATORS

A soft robotic device includes a flexible body having a width, a length and a thickness, wherein the thickness is at least 1 mm, the flexible body having at least one channel disposed within the flexible body, the channel defined by upper, lower and side walls, wherein at least one wall is strain limiting; and a pressurizing inlet in fluid communication with the at least one channel, the at least one channel positioned and arranged such that the wall opposite the strain limiting wall preferentially expands when the soft robotic device is pressurized through the inlet. 1. A soft body robotic device , comprising:a flexible molded body having a plurality of interconnected chambers disposed within the molded body, wherein a portion of the molded body is comprised of an elastically extensible material and a portion of the molded body is strain limiting relative to the elastically extensible material, and wherein the thickness of the molded body is at least 1 mm; anda pressurizing inlet that is configured to receive fluid for the plurality of interconnected chambers,wherein the molded body is configured to preferentially expand when the plurality of interconnected chambers are pressurized by the fluid, causing a bending motion around the strain limiting portion of the molded body.2. A soft robotic device , comprising:a flexible molded body comprising a plurality of interconnected pleated chambers, the flexible molded body being comprised of a flexible material and affixed to a strain limiting member in such a manner that the strain limiting member forms a wall of the plurality of interconnected pleated chamber, wherein a thickness of the molded body is at least 1 mm; anda pressurizing inlet that is configured to receive fluid for the plurality of interconnected pleated chamber,wherein the plurality of interconnected pleated chambers are configured to preferentially unfold when the flexible molded body is pressurized through the pressurizing inlet, causing bending motion ...

Method for operating a hydraulic system and brake system

A method for operating a hydraulic system with a plurality of consumers an electrically controllable pressure supply device and an electrically actuable inlet valve, per consumer, which inlet valve is arranged between the pressure supply device and the consumer, wherein a pressure/volume relationship is predefined or determined for each consumer, wherein each consumer is assigned to a first group or a second group of consumers, wherein the first group of consumers includes at least one consumer, and wherein, in order to set predefined consumer-specific setpoint pressures, the first group of consumers is connected via the respectively opened inlet valve to the pressure supply device, and the inlet valves of the consumers of the second group are closed, wherein the inlet valve of a single, selected consumer of the second group is opened while being regulated to build up a pressure, and a brake system for motor vehicles.

Method for operating a hydraulic consumer on an electrically actuated control valve

A method for operating a hydraulic consumer on an electrically actuated control valve includes providing the valve with an open valve position for establishing a connection between a valve inlet and a pilot line for influencing a pivot angle set on an axial piston pump and a system pressure which is present at the valve inlet and dependent on the pivot angle. Data regarding the current system pressure and the current pivot angle are detected and communicated to a control unit. The method includes determining an incorrect setting of the control valve if the control unit detects that a delivery volume flow of the axial piston pump is smaller than a value to be expected based on valve position, or the control unit detects that the system pressure present at the valve inlet is at a maximum without a delivery volume flow flowing in the direction of the hydraulic consumer. 1. A method for operating a hydraulic consumer on an electrically actuated control valve , comprising:providing the control valve with an open valve position for establishing a connection between a valve inlet and a pilot line connected to a control connection for influencing a pivot angle which is set on an axial piston pump and provides a system pressure which is present at the valve inlet and is dependent on the pivot angle;detecting data by one or more sensors with respect to the current system pressure and the current pivot angle of the axial piston pump;communicating the data to a control unit;determining when the hydraulic consumer is connected;determining an incorrect setting of the control valve if the control unit detects that a delivery volume flow of the axial piston pump resulting from the current pivot angle is smaller than a value to be expected on the basis of the valve position of the control valve; anddetermining an incorrect setting of the system pressure if the control unit detects that the system pressure present at the valve inlet is at a maximum without a delivery volume flow ...

Master Brake Cylinder Arrangement for a Hydraulic Motor Vehicle Brake System

A master brake cylinder arrangement for a hydraulic motor vehicle brake system, comprising a master brake cylinder housing with a cylindrical recess and at least one substantially annular groove which is oriented transversally to a longitudinal axis of the cylindrical recess and which is axially delimited by a protruding housing portion. The master brake cylinder arrangement also comprises at least one pressure piston which can be displaced axially in the cylindrical recess of the master brake cylinder housing and which is guided in a sealed manner by means of at least one seal element arranged in the groove. The housing portion has an edge portion which faces the seal element and an edge portion which faces away from the seal element when viewed in the axis-containing longitudinal section. The edge portion facing the seal element and the edge portion facing away from the seal element have a curved contour when viewed in the axis-containing longitudinal section, the edge portion facing the seal element and the edge portion facing away from the seal element being curved to different degrees. 2. The master brake cylinder arrangement according to claim 1 , wherein the edge portion facing away from the seal element is more strongly curved than the edge portion facing the seal element.3. The master brake cylinder arrangement according to claim 1 , wherein the contour of the edge portion facing the seal element and the contour of the edge portion facing away from the seal element are circular when viewed in the axis-containing longitudinal section.4. The master brake cylinder arrangement according to claim 3 , wherein the edge portion facing the seal element has a first radius of curvature and the edge portion facing away from the seal element has a second radius of curvature claim 3 , wherein the second radius of curvature is at most a fifth of the first radius of curvature.5. The master brake cylinder arrangement according to claim 1 , wherein the seal element consists ...

POWER GENERATION SYSTEM

A power generation system to improve the degree of freedom of installation is described herein. A power generation system comprises: first fluid chambers that contain a fluid; a second fluid chamber that contains the fluid; a communication flow channel that communicates the first fluid chambers and the second fluid chamber with each other; first pistons that are disposed such that the fluid in the first fluid chambers can be pressed; a second piston that is disposed such that the fluid in the second fluid chamber can be pressed; and power generation modules that convert pressing forces of the corresponding first pistons into electricity using piezoelectric elements. The power generation elements of the power generation modules generate power when the second piston is pressed, and the pressing force is transmitted to the first pistons via the fluid, and the piezoelectric elements are indirectly pressed due to the force thus transmitted. 1. A power generation system comprising:a fluid container that contains a fluid;a first piston disposed in the fluid container to press the fluid in the fluid container;a second piston disposed in the fluid container to press the fluid in the fluid container; anda power generation module comprising a power generation element; whereinwhen the second piston is pressed by a pressing force, the pressing force is transmitted to the first piston via the fluid in the fluid container, and the first piston presses the power generation element directly or indirectly due to the force thus transmitted to generate power.2. The power generation system according to claim 1 , wherein the fluid container comprises:a first fluid chamber;a second fluid chamber; anda communication flow channel fluidly communicating the first fluid chamber and the second fluid chamber, whereinthe first piston is disposed to press fluid in the first fluid chamber, andthe second piston is disposed to press fluid in the second fluid chamber.3. The power generation system ...

Hybrid construction machine

A hybrid construction machine includes first and second main pumps, first and second supply passages, first and second circuit systems, a hydraulic motor, a motor generator, an assist pump, a joint passage connected to the assist pump and branched off, first and second logic valves, a switching valve disposed in the other branch passage and switchable to a state where the assist pump is connected to the second supply passage on the upstream side of the second logic valve and a state where the second main pump is connected to the hydraulic motor, and a check valve. A poppet diameter of the first logic valve is smaller than that of the second logic valve.

HYDRAULIC OPERATING SYSTEM

A hydraulic operating system for a small vehicle including a bicycle is basically provided with a base member, a piston, a hydraulic fluid chamber, a diaphragm and a deformation adjustment structure. The base member includes a cylinder bore. The piston is movably disposed in the cylinder bore. The hydraulic fluid chamber is fluidly connected to the cylinder bore. The diaphragm is at least partially defining the hydraulic fluid chamber. The diaphragm is deformed by fluid pressure in response to movement of the piston in the cylinder bore. The deformation adjustment structure is configured to selectively change a deformation condition of the diaphragm between at least two different deformation conditions. 1. A hydraulic operating system for a small vehicle including a bicycle comprising:a base member including a cylinder bore;a piston movably disposed in the cylinder bore;a hydraulic fluid chamber fluidly connected to the cylinder bore;a diaphragm at least partially defining the hydraulic fluid chamber, the diaphragm being deformed by fluid pressure in response to movement of the piston in the cylinder bore; anda deformation adjustment structure configured to selectively change a deformation condition of the diaphragm between at least two different deformation conditions.2. The hydraulic operating system according to claim 1 , whereinthe hydraulic fluid chamber is fluidly connected to the cylinder bore by a fluid port that is provided on the base member and opens to the cylinder bore at a first location outside of piston stroke of the piston.3. The hydraulic operating system according to claim 1 , whereinthe base member includes a hydraulic fluid tank in which the diaphragm is at least partly arranged, andthe hydraulic fluid chamber is defined between the hydraulic fluid tank and the diaphragm.4. The hydraulic operating system according to claim 1 , whereinthe diaphragm defines a recess, andthe deformation adjustment structure includes a projection that is disposed in ...

Power transfer device, orbital pipe cutting device and hydraulic chucking device

Disclosed are a power transfer device for transferring external power to a rotary body, a pipe cutting device using the power transfer device and a hydraulic chucking device using the power transfer device. The power transfer device is configured to transfer external power to a rotary body coupled to one side of a main body. The power transfer device includes at least one double-action interlocking cylinder mounted to a rear surface of the rotary body and provided with a rod protruding toward the main body, a push unit installed in the main body and provided with at least one pusher protruding toward the rotary body, and a bearing disposed between the pusher of the push unit and the rod of the interlocking cylinder and configured to allow relative rotation of the pusher and the rod and to transfer power between the pusher and the rod.

Hydraulic cylinder, particularly slave cylinder for a hydraulic clutch actuating system for motor vehicles

A hydraulic cylinder has a cylinder housing in which is formed a pressure chamber variably bounded on one side by a piston of a piston subassembly that is longitudinally displaceable. A piston rod is rigidly connected with the piston, wherein the piston has an outer contour, which permits tilting of the piston subassembly in the cylinder housing, and a projection, which is at the pressure chamber side and on which a sealing element is centered and retained by a retaining ring. The sealing element has an encircling sealing lip that slidably and sealably bears against a sliding surface of the cylinder housing. The retaining ring is provided on the side thereof opposite from the sealing element with a stiffened prolongation.

HYDRAULIC CYLINDER, PARTICULARLY SLAVE CYLINDER FOR A HYDRAULIC CLUTCH ACTUATING SYSTEM FOR MOTOR VEHICLES

A hydraulic cylinder for a hydraulic clutch actuating system for motor vehicles has a piston subassembly with a piston and piston rod, a cylinder housing in which a pressure chamber is variably bounded at one side by the piston and fixedly bounded at the other side by a base of the cylinder housing. A spring element is arranged at the side of the piston opposite from the pressure chamber and is supported at one end on a spring plate on the housing side and operatively connected at the other end with the piston rod so as to bias the piston subassembly in a direction away from the base. A fixing section fixes the piston subassembly in a predetermined stroke setting with respect to the cylinder housing prior to first actuation of the hydraulic cylinder and is constructed to release the piston subassembly relative to the cylinder housing upon first actuation 1. A hydraulic cylinder for a hydraulic actuating system for motor vehicles , comprisinga piston subassembly with a piston and a piston rod,a cylinder housing with a pressure chamber variably bounded at one side by the piston and fixedly bounded at the other side by a base of the cylinder housing,a spring element arranged at the side of the piston opposite from the pressure chamber and supported at one end on a spring plate on the housing side and operatively connected at the other end with the piston rod so as to bias the piston subassembly in a direction away from the base of the cylinder housing, anda fixing section fixing the piston subassembly in a predetermined stroke setting with respect to the cylinder housing prior to first actuation of the hydraulic cylinder and constructed to release the piston subassembly relative to the cylinder housing when first actuation of the hydraulic cylinder takes place,characterized in that the fixing section is formed at the spring plate and co-operates with a mating section at the piston rod for releasable fixing of the piston subassembly with respect to the cylinder housing: ...

Device and method for Transmitting a Mechanical Force for Driving a Pressing Device for Press Fittings

The invention is based on the technical problem of improving the pressing in of large press fittings, said problem being solved by a device for transmitting a mechanical force for driving a pressing device for press fittings, having a storage container () for hydraulic fluid, having a pump cylinder (), having a working cylinder (), having a first line () for connecting the storage container () to the pump cylinder (), having a second line () for connecting the pump cylinder () to the working cylinder (), and having a third line () for connecting the working cylinder () to the storage container (), wherein means () for preventing a return flow into the storage container () are provided in the first line (), wherein means () for preventing a return flow into the pump cylinder () are provided in the second line (), wherein switching means () for opening and closing the third line () are provided, and wherein the swept volume (VA) of the working cylinder () is configured to be greater than the swept volume (VP) of the pump cylinder (). The invention also relates to a corresponding method. 1. A device for transmitting a mechanical force for press fittings comprising:a storage container for a hydraulic fluid;a pump cylinder with a pump piston;a working cylinder with a working piston, wherein the working piston's displacement in the working cylinder is greater than the pump piston's displacement in the pump cylinder;a first line connecting the storage container to the pump cylinder, wherein a non-return valve prevents a return flow of the hydraulic fluid from the pump cylinder into the storage container;a second line connecting the pump cylinder to the working cylinder, wherein a non-return valve prevents a return flow of the hydraulic fluid from the working cylinder into the pump cylinder;a third line connecting the working cylinder to the storage container, wherein a switching valve opens and closes the third line;a fourth line with a pressure limiting valve that ...

SERVO HYDRAULIC PRESS

The present invention relates to a servo hydraulic press for sheet metal forming. The press comprises a hydraulic cylinder, at least two servo motors and at least two pumps for supplying pressurized fluid to the hydraulic cylinder, where each servo motor drives at least one pump. The servo motors are operable at variable speed, and the first servo motor and first pump are operable in an opposite direction to the second servo motor and the second pump. With this arrangement, the servo hydraulic press may be operated at low speed without causing damage to the pumps or motors. 2143. The servo hydraulic press () according to claim 1 , wherein each servo motor () and/or pump () is operable in two directions.31. The servo hydraulic press () according to claim 1 , wherein the supply of pressurized fluid is a closed loop supply.414. The servo hydraulic press () according to claim 1 , wherein the servo motors () are reluctance motors.512. The servo hydraulic press () according to claim 1 , further comprising at least one control valve ().612. The servo hydraulic press () according to claim 1 , wherein the at least one control valve () is manually operated.712. The servo hydraulic press () according to claim 1 , wherein the at least one control valve () is automatically operated.81. A method for controlling a hydraulic cylinder in a servo hydraulic press () for forming sheet metal claim 1 , the method comprising the steps of{'b': 3', '4, 'supplying pressurized fluid to the hydraulic cylinder by means of at least two pumps (), each driven by a respective servo motor (),'}operating the servo motors at variable speed, andoperating at least one first servo motor and at least one first pump in an opposite direction to at least one second servo motor and at least one second pump.92. The method according to claim 8 , further comprising the step of controlling the flow of the fluid by use of at least one control valve ().102. The method according to claim 8 , wherein the step of ...

BICYCLE CONTROL DEVICE

A bicycle control device is basically provided with a mounting bracket, a hydraulic unit and a shift unit. The mounting bracket includes a handlebar clamp defining a handlebar mounting axis. The hydraulic unit is provided on the mounting bracket and includes a cylinder housing defining a cylinder bore, a hydraulic reservoir and a piston. The hydraulic reservoir is fluidly connected to the cylinder bore. The piston is movably disposed in the cylinder bore along a cylinder axis of the cylinder bore. The shift unit is provided on the mounting bracket and including a wire take-up member pivotable about a pivot axis. The wire take-up member of the shift unit and the hydraulic reservoir are disposed between the handlebar mounting axis and the cylinder axis as viewed along a first direction parallel to the pivot axis of the wire take-up member. 1. A bicycle control device comprising:a mounting bracket including a handlebar clamp defining a handlebar receiving opening with a handlebar mounting axis;a hydraulic unit provided on the mounting bracket and including a cylinder housing defining a cylinder bore, a hydraulic reservoir fluidly connected to the cylinder bore, and a piston movably disposed in the cylinder bore along a cylinder axis of the cylinder bore; anda shift unit provided on the mounting bracket and including a wire take-up member pivotable about a take-up axis, whereinthe wire take-up member of the shift unit and the hydraulic reservoir are disposed between the handlebar mounting axis and the cylinder axis as viewed along a first direction parallel to the take-up axis of the wire take-up member.2. A bicycle control device comprising:a mounting bracket;a hydraulic unit provided on the mounting bracket and including a cylinder housing defining a cylinder bore, a hydraulic reservoir fluidly connected to the cylinder bore, a piston movably disposed in the cylinder bore along a cylinder axis of the cylinder bore, and a hydraulic operating lever movably disposed ...

FLUID DELIVERY SYSTEMS INCLUDING HYDRAULIC DRIVE SYSTEMS

A hydraulic drive system includes a unidirectional pump, a charge pump configured to supply an input of the unidirectional pump with a hydraulic fluid pressurized with a charge pressure, a hydraulic motor, and a flow control valve configured to meter a flow of hydraulic fluid from an output of the unidirectional pump to a fluid input of the hydraulic motor. The hydraulic motor comprises a fluid output configured to be in direct fluid communication with the input of the unidirectional pump. Fluid delivery systems include hydraulic drive systems. 1. A hydraulic drive system , comprising:a unidirectional pump;a charge pump configured to supply an input of the unidirectional pump with a hydraulic fluid pressurized with a charge pressure;a hydraulic motor with an output shaft;a flow control valve configured to meter a flow of hydraulic fluid from an output of the unidirectional pump to a fluid input of the hydraulic motor; anda fluid delivery pump mechanically coupled to the output shaft of the hydraulic motor;wherein the hydraulic motor comprises a fluid output configured to be in direct fluid communication with the input of the unidirectional pump.2. The hydraulic drive system of claim 1 , wherein the drive system further comprises a fluid reservoir claim 1 , and wherein the charge pump is configured to draw hydraulic fluid from the fluid reservoir.3. The hydraulic drive system of claim 2 , wherein the drive system further comprises a heat exchanger configured to extract heat from the hydraulic fluid.4. The hydraulic drive system of claim 3 , wherein the heat exchanger is configured for fluid communication with the output of the unidirectional pump and the reservoir.5. The hydraulic drive system of claim 2 , wherein at least one of the charge pump claim 2 , the unidirectional pump claim 2 , and the hydraulic motor comprise a relief valve configured to be in fluid communication with the reservoir.6. The hydraulic drive system of claim 1 , wherein the flow control valve ...

Hydraulic Actuating Device for Actuation of at Least One Friction Clutch and at Least One Gear Setting Element in a Motor Vehicle

A hydraulic actuating device for a friction clutch and a gear setting element has a power unit for pressure generation by use of an electrically driven pump. Gear setting and clutch actuating sections are hydraulically connected to the power unit. A detenting device with a blocking element is associated with a piston of the clutch setting cylinder, which is operatively connected with the friction clutch and can be hydraulically loaded on opposite sides. The blocking element is resiliently biased into a blocking setting preventing piston movement and is movable by an actuator from the blocking setting into a release setting permitting piston movement. The pump is reversible in order to load the piston on one or the other side for an actuating movement. The control unit coordinates activation of the pump and actuator in order to disengage or engage the friction clutch.

MAGNETIC RESONANCE IMAGING COMPATIBLE SYSTEM FOR IMPARTING MOTION

A system for imparting motion of an object includes: (1) at least one first hydrostatic actuator; (2) a hydraulic transmission conduit; and (3) at least one second hydrostatic actuator. The first hydrostatic actuator is connected to the second hydrostatic actuator via the hydraulic transmission conduit, such that an input displacement applied to the first hydrostatic actuator is transmitted via the hydraulic transmission conduit to the second hydrostatic actuator to impart motion of the object. 1. A system for imparting motion of an object , comprising:at least one first hydrostatic actuator;a hydraulic transmission conduit; andat least one second hydrostatic actuator,wherein the first hydrostatic actuator is connected to the second hydrostatic actuator via the hydraulic transmission conduit, such that an input displacement applied to the first hydrostatic actuator is configured to be transmitted via the hydraulic transmission conduit to the second hydrostatic actuator to impart motion of the object.2. The system of claim 1 , wherein at least one of the first hydrostatic actuator or the second hydrostatic actuator has a material composition that is entirely polymeric.3. The system of claim 1 , wherein at least one of the first hydrostatic actuator or the second hydrostatic actuator is devoid of a metal.4. The system of claim 1 , wherein at least one of the first hydrostatic actuator or the second hydrostatic actuator is devoid of a ferromagnetic material.5. The system of claim 1 , wherein the first hydrostatic actuator is a first rolling diaphragm actuator.6. The system of claim 5 , wherein the first rolling diaphragm actuator includes an actuator body claim 5 , a piston moveably disposed within the actuator body claim 5 , and a pair of diaphragms extending between respective portions of the actuator body and respective ends of the piston.7. The system of claim 6 , wherein the actuator body defines a slot claim 6 , and the first rolling diaphragm actuator further ...

BICYCLE OPERATING DEVICE

A base member includes a first end to be mounted to a bicycle handlebar and a second end opposite to the first end. An operating member is pivotally coupled to the base member about a first pivot axis. A hydraulic unit is coupled to the operating member to operate a bicycle component in response to an operation of the operating member. At least part of the hydraulic unit is disposed closer to the first end than the first pivot axis when viewed from a first direction parallel to the first pivot axis. A wireless communicator is to wirelessly transmit a signal to an additional component in response to the input operation. A power supply is electrically connected to the wireless communicator. At least one of the wireless communicator and the power supply is disposed closer to the second end than the first pivot axis when viewed from the first direction. 1. A bicycle operating device comprising:a base member including a first end to be mounted to a bicycle handlebar and a second end opposite to the first end;an operating member pivotally coupled to the base member about a first pivot axis;a hydraulic unit coupled to the operating member to operate a bicycle component in response to an operation of the operating member, at least part of the hydraulic unit being disposed closer to the first end than the first pivot axis when viewed from a first direction parallel to the first pivot axis;an electrical switch to be activated by an input operation from a user;a wireless communicator electrically connected to the electrical switch to wirelessly transmit a signal to an additional component in response to the input operation; anda power supply electrically connected to the wireless communicator to supply electrical power to the wireless communicator, at least one of the wireless communicator and the power supply being disposed closer to the second end than the first pivot axis when viewed from the first direction.2. A bicycle operating device comprising:a base member including a ...

BICYCLE OPERATING DEVICE

A base member includes a first end to be mounted to a bicycle handlebar and a second end opposite to the first end. An operating member is pivotally coupled to the base member about a first pivot axis. A hydraulic unit is coupled to the operating member to operate a bicycle component in response to an operation of the operating member. An electrical switch is to be activated by an input operation from a user. A wireless communicator is electrically connected to the electrical switch to wirelessly transmit a signal to an additional component in response to the input operation. A power supply is electrically connected to the wireless communicator to supply electrical power to the wireless communicator. At least part of the hydraulic unit is disposed below at least one of the wireless communicator and the power supply in a mounting state of the bicycle operating device. 1. A bicycle operating device comprising:a base member including a first end to be mounted to a bicycle handlebar and a second end opposite to the first end;an operating member pivotally coupled to the base member about a first pivot axis;a hydraulic unit coupled to the operating member to operate a bicycle component in response to an operation of the operating member;an electrical switch to be activated by an input operation from a user;a wireless communicator electrically connected to the electrical switch to wirelessly transmit a signal to an additional component in response to the input operation; anda power supply electrically connected to the wireless communicator to supply electrical power to the wireless communicator, at least part of the hydraulic unit being disposed below at least one of the wireless communicator and the power supply when viewed from a first direction parallel to the first pivot axis in a mounting state of the bicycle operating device.2. A bicycle operating device comprising:a base member including a first end to be mounted to a bicycle handlebar and a second end opposite to ...

BICYCLE OPERATING DEVICE

A bicycle operating device comprises a base member, an operating member, a hydraulic unit, an electrical switch, a wireless communicator, and a power supply. The base member includes a first end and a second end opposite to the first end. The operating member is pivotally coupled to the base member about a first pivot axis. At least part of the hydraulic unit is disposed closer to the second end than the first pivot axis when viewed from a first direction parallel to the first pivot axis. The power supply is electrically connected to the wireless communicator to supply electrical power to the wireless communicator. At least one of the wireless communicator and the power supply is at least partly disposed closer to the first end than the first pivot axis when viewed from the first direction. 1. A bicycle operating device comprising: a first end to be mounted to a bicycle handlebar, and', 'a second end opposite to the first end;, 'a base member including'}an operating member pivotally coupled to the base member about a first pivot axis;a hydraulic unit coupled to the operating member to operate a bicycle component in response to an operation of the operating member, at least part of the hydraulic unit being disposed closer to the second end than the first pivot axis when viewed from a first direction parallel to the first pivot axis;an electrical switch to be activated by an input operation from a user;a wireless communicator electrically connected to the electrical switch to wirelessly transmit a signal to an additional component in response to the input operation; anda power supply electrically connected to the wireless communicator to supply electrical power to the wireless communicator, at least one of the wireless communicator and the power supply being at least partly disposed closer to the first end than the first pivot axis when viewed from the first direction.2. The bicycle operating device according to claim 1 , further comprising:a first pivot shaft ...

BICYCLE OPERATING DEVICE

A bicycle operating device comprises a base member, an operating member, a hydraulic unit, an electrical switch, a wireless communicator, and a power supply. The base member includes a first end to be mounted to a bicycle handlebar and a second end opposite to the first end. The operating member is pivotally coupled to the base member about a first pivot axis. The wireless communicator is electrically connected to the electrical switch to wirelessly transmit a signal to an additional component in response to an input operation. The power supply is electrically connected to the wireless communicator to supply electrical power to the wireless communicator. The hydraulic unit at least partly overlaps with at least one of the wireless communicator and the power supply when viewed from a first direction parallel to the first pivot axis. 1. A bicycle operating device comprising: a first end to be mounted to a bicycle handlebar, and', 'a second end opposite to the first end;, 'a base member including'}an operating member pivotally coupled to the base member about a first pivot axis;a hydraulic unit coupled to the operating member to operate a bicycle component in response to an operation of the operating member;an electrical switch to be activated by an input operation from a user;a wireless communicator electrically connected to the electrical switch to wirelessly transmit a signal to an additional component in response to the input operation; anda power supply electrically connected to the wireless communicator to supply electrical power to the wireless communicator, the hydraulic unit at least partly overlapping with at least one of the wireless communicator and the power supply when viewed from a first direction parallel to the first pivot axis.2. The bicycle operating device according to claim 1 , whereinthe hydraulic unit is at least partly disposed closer to the first end than the first pivot axis when viewed from the first direction.3. The bicycle operating device ...

Active Damper System for a Vehicle

An active damper system is provided for a vehicle, in particular a motor vehicle. It includes a damper unit with a cylinder, a piston which is guided in the cylinder, and a piston rod which is connected to the piston. The piston divides the cylinder into a first chamber and a second chamber, and the damper unit is designed to be arranged between a body and a wheel of the vehicle. The damper system also has a pump for changing the pressure in the two chambers and for moving the piston, a first valve, a second valve, which is connected to the first valve in series, a third valve, and a fourth valve, which is connected to the third valve in series. The first and second valve are connected in parallel to the third and fourth valve. A fluid-conductive first line leads to the first chamber between the first valve and the second valve, and a fluid-conductive second line leads to the second chamber between the third valve and the fourth valve. A low-pressure side of the pump is connected between the first valve and the fourth valve, and a pressure side of the pump is connected between the second valve and the third valve. The first valve, the second valve, the third valve, and the fourth valve can be switched in order to selectively block and release the flow of fluid. A control unit is provided for switching the four valves such that the pump rotates in the same direction when compressing and rebounding during an electromotor operation and a generator operation. 1. An active damper system for a vehicle , comprising:a damper unit having a cylinder, a piston which is guided in the cylinder, and a piston rod which is connected to the piston, the piston dividing the cylinder into a first chamber and a second chamber, and the damper unit being configured for arranging between a vehicle body and a wheel of the vehicle;a pump for changing pressures in the first and second chambers and for moving the piston;a first valve and a second valve which is connected in series with the ...

REMOTELY RECONFIGURABLE HIGH PRESSURE FLUID PASSIVE CONTROL SYSTEM FOR CONTROLLING BI-DIRECTIONAL PISTON PUMPS AS ACTIVE SOURCES OF HIGH PRESSURE FLUID, AS INACTIVE RIGID STRUCTURAL MEMBERS OR AS ISOLATED FREE MOTION DEVICES

A bi-directional pump system that can be configured for a plurality of operating modes. The bi-directional pump system includes a plurality of bi-directional pumps each having their own valving system that are connected to a common high pressure manifold, a low pressure manifold and a suction manifold. Via the respective valve systems, each pump can be configured into: (1) a single-acting pumping mode; (2) a double-acting pumping mode; (3) an inactive free motion mode; and (4) an inactive rigid mode. One exemplary application of the bi-directional pump system is on an articulated wave energy conversion system that consists of three floating barges: a front barge, a center barge and a rear barge where the front barge and center barge are hingedly connected as are the center barge and the rear barge. A first set of the bi-directional pumps span the first hinge connection and the second set of bi-directional pumps span the second hinge connection. The bi-directional pump system intakes sea water and, using wave energy, outputs a high pressure flow of sea water for water desalination and/or for driving electrical generators. 112.-. (canceled)13. A method for permitting a plurality of parallel-acting bi-directional pumps to be configured into a plurality of operational modes , the plurality of parallel-acting bi-directional pumps being positioned between barges of an articulating barge wave energy converter system positioned in sea water that experiences wave motion , said method comprising:providing a plurality of bi-directional pumps, each bi-directional pump having a single piston and piston rod that can translate within a cylinder in two opposite directions, each piston separating said corresponding cylinder into two chambers, each piston displacing sea water located in each chamber when said piston is in motion due to external forces acting through each piston rod and each cylinder;coupling each chamber, through a valve network, to a high pressure manifold, a low ...

Hydraulic fan drive

A hydraulic fan drive includes an adjustable variable-displacement pump by which a pressurized fluid can be sucked in and can be delivered via a pump pressure port and which has, for adjustment of the delivery volume, an adjustment device with an actuation chamber, which is delimited by an actuation surface of an adjustment piston and to which a pressurized fluid can be supplied for increasing the delivery volume and from which pressurized fluid can be displaced for reducing the delivery volume. The adjustment device further includes a counter chamber, which is delimited by a counter surface, smaller in cross section in comparison with the actuation surface, of an adjustment piston and can be acted on by pump pressure. The adjustment device also includes an actuation spring, which acts so as to adjust the delivery volume toward an extreme value. 1. A hydraulic fan drive comprising:a variable-displacement pump configured for adjustment of a delivery volume and including (i) a suction port by which a pressurized fluid is sucked in, and (ii) a pump pressure port by which the pressurized fluid is delivered, a pump pressure prevails at the pump pressure port;an adjustment device configured to adjust the delivery volume, the adjustment device including (i) an actuation chamber delimited by an actuation surface of an adjustment piston, and (ii) an actuation spring, the actuation surface configured to be acted on by an actuation pressure and to which the pressurized fluid is supplied for increasing the delivery volume and from which, under a force generated by the pump pressure, the pressurized fluid is displaced for reducing the delivery volume, the actuation spring is configured to act to adjust the delivery volume toward an extreme value;a proportionally adjustable pressure-regulating valve including (i) a valve pressure port fluidically connected to the pump pressure port, (ii) a tank port, and (iii) a regulation port at which the actuation pressure is adjusted and ...

SPRING-ASSISTED JACK PLATE FOR OUTBOARD MOTOR

A jack plate includes a mounting assembly having first and second spacing brackets connected by a transom plate adapted for mounting to the transom of a boat, each of the spacing brackets having inwardly facing channels at rearward sides of the spacing brackets. The jack plate further includes a motor lift including a lift plate extending between a first bearing and a second bearing, the channels adapted to conformingly receive the first and second bearings. An actuator is provided to raise and lower the lift plate relative to the transom plate. At least one spring is operably coupled between the mounting assembly and the motor lift, the spring unloading the lift plate to re-duce load on the actuator. The spring is optionally a compression gas spring. 110-. (canceled)11. A jack plate comprising:a mounting assembly comprising a first spacing bracket, a second spacing bracket, the first spacing bracket defining a first channel, the second spacing bracket defining a second channel, the first channel and the second channel opening toward one another;a lift plate assembly comprising a first slider slidingly received in the first channel, a second slider slidingly received in the second channel, and a lift plate extending between the first slider and the second slider;an actuator operably coupled between the mounting assembly and the lift plate assembly for raising and lower the lift plate assembly relative to the mounting assembly; andan upright gas spring operably coupled between the mounting assembly and the lift plate assembly, the spring applying a biasing force between the lift plate assembly and the mounting assembly to unload the jack plate allowing for easier raising and lowering of an outboard motor mounted on the lift plate and utilization of the actuator with less power that what would otherwise be required.12. The jack plate of claim 11 , wherein the actuator is mechanical.13. The jack plate of claim 11 , wherein the actuator is electrified.14. The jack plate ...

Externally verifiable thermal compensation of cowl opening actuator

A cowl door actuator is arranged between a head end and a rod end connected to a cowl door in an aircraft. The cowl door has a closed position and an open position, and the cowl door actuator includes a piston rod that is axially moveable between the head end and the rod end. The piston rod has an extended position in which the piston rod contacts the rod end to move the cowl door to the open position, and a retracted position in which the piston rod is axially spaced from the rod end. When the cowl door is in the closed position, the gap between the piston rod and the rod end enables an axial displacement of the piston rod toward the extended position during thermal expansion of fluid remaining in the actuator, such that the cowl door is maintained in the closed position.

HYDRAULIC ACTUATOR

A hydraulic actuator includes a hollow tube that has a first opening at a first end of the hollow tube and that has a second opening at a second end of the hollow tube. The hollow tube contains hydraulic fluid. A moveable magnet moves within hollow tube as a result of a magnetic field within the hollow tube. A magnetic field source located outside the hollow tube creates the magnetic field within the hollow tube. When the moveable magnet moves to the first end of the hollow tube, a first piston pushes hydraulic fluid out of the first opening. When the moveable magnet moves to the second end of the hollow tube a second piston pushes hydraulic fluid out of the second opening. 1. A hydraulic actuator comprising:a hollow tube, having a first opening at a first end of the hollow tube and having a second opening at a second end of the hollow tube;hydraulic fluid within the hollow tube;a magnet within the hollow tube;a first piston on a first end of the magnet wherein when the magnet moves toward the first end of the hollow tube the first piston pushes hydraulic fluid out of the first opening;a second piston on a second end of the magnet wherein when the magnet moves toward the second end of the hollow tube the second piston pushes hydraulic fluid out of the second opening; and a plurality of sets of wire windings around the hollow tube, and', 'a control circuit that is separately connected to each set of wire windings allowing the control circuit to separately control current through each set of wire windings, the current through each set of wire windings creating a magnetic field that exerts a motional electromotive force on the magnet controlling movement and location of the magnet within the hollow tube so that in response to a positioning command, the control circuit separately controls current through each set of wire windings to bring the magnet to a selected position between the first end of the hollow tube and the second end of the hollow tube., 'a positioning ...

INVERTED CLOSED BELLOWS WITH LUBRICATED GUIDE RING SUPPORT

A pumping system deployed in a wellbore has a motor, a pump driven by the motor, and a volumetric compensator connected to the motor to accommodate the expansion and contraction of fluids contained within the motor. The volumetric compensator has a head connected to the motor, a base that includes a fluid exchange port that extends to the wellbore, and a housing extending between the head and the base. The volumetric compensator further includes an inverted bellows assembly contained within the housing. The inverted bellows assembly includes a metal bellows that has an interior, an exterior, a proximal end and a distal end. The interior of the metal bellows is in fluid communication with the wellbore. The inverted bellows assembly may also include one or more guide rings connected to the exterior of the metal bellows. The guide rings are lubricated by the clean motor fluid surrounding the exterior of the metal bellows. 1. A volumetric compensator assembly for use in a pumping system deployed in a wellbore , wherein the pumping system has a fluid filled electric motor and a pump driven by the electric motor , the volumetric compensator comprising:a head, wherein the head includes an inlet port configured to place the volumetric compensator in fluid communication with the motor;a base, wherein the base includes an exchange port in fluid communication with the wellbore;a housing extending between the head and the base; and a metal bellows having an interior, an exterior, a proximal end and a distal end, wherein the proximal end is connected to the base, wherein the interior of the metal bellows is in fluid communication with the wellbore, and wherein an annular space is present between the exterior of the metal bellows and the housing;', 'a standoff post connected to the base, wherein the standoff post is contained within the interior of the metal bellows; and', 'a guide ring connected to the exterior of the metal bellows, wherein the guide ring is configured to ...

Device and method for maintaining a produced hydraulic pressure

A device for maintaining a hydraulic pressure, which can be set by a pressure generator, including: an inlet for coupling to the pressure generator; an outlet for providing the hydraulic pressure; at least a first check valve, which is configured to open a flow path from the inlet to the outlet when a first opening pressure is exceeded and to prevent flow in the opposite direction; and a switching apparatus between the inlet and the outlet, wherein the switching apparatus is configured to hold the hydraulic pressure at the outlet if a pressure produced by the pressure generator is greater than a switching pressure, and to reduce the hydraulic pressure at the outlet if a pressure produced by the pressure generator is less than the switching pressure, wherein the switching pressure is less than the first opening pressure. Also described are a hydraulic system, a power-steering system, vehicle, and method.

CHECK STRUCTURE AND HYDRAULIC BRAKING SYSTEM HAVING THE SAME

A hydraulic braking system includes a base, which has an oil chamber and a connecting hole communicating with each other, a seat, which is provided in the oil chamber and has a receiving space communicating with the oil chamber and the connecting hole, a check valve movably provided in the receiving space and the connecting hole, and an elastic member. When one end of a connecting pipe which is connected to a brake actuator is inserted into the connecting hole to engage the base, the check valve is pushed inward to inject the hydraulic fluid in the oil chamber into the connecting pipe; when the connecting pipe is detached from the base, the check valve is pushed by the elastic member, and therefore returns to the original position. Whereby, the hydraulic fluid is prevented from leaking out. 1. A hydraulic braking system , comprising:a base having an oil chamber and a connecting hole provided therein, wherein an end of the connecting hole communicates with the oil chamber, while another end thereof communicates with outside of the base;a seat provided in the oil chamber, wherein the seat has a receiving space communicating with the oil chamber and the connecting hole;a check valve provided in the receiving space and the connecting hole, wherein the check valve is rod-shaped, and is movable between a first position and a second position; the check valve has a passage, which has an inlet and an outlet, wherein the outlet communicates with the connecting hole, and the inlet communicates with the receiving space when the check valve is located at the second position; the inlet does not communicate with the receiving space when the check valve is located at the first position; andan elastic member provided in the receiving space of the seat, wherein, in a normal condition, the elastic member urges the check valve to stay at the first position by pushing it.2. The hydraulic braking system of claim 1 , further comprising a connecting pipe claim 1 , wherein a pushing portion ...

Work Machine

To provide a work machine which, in a configuration provided with a closed-circuit pump and an open-circuit pump, is capable of stabilizing respective pump operations of the closed-circuit pump and the open-circuit pump and of improving the mountability of the closed-circuit pump and the open-circuit pump. The present invention is provided with a closed circuit in which a closed-circuit pump and a boom cylinder are connected annularly, and an open circuit which has an open-circuit pump for making hydraulic fluid flow in from a reservoir and flow out and a connection passage capable of introducing hydraulic fluid into the closed circuit, wherein the closed-circuit pump is installed above the open-circuit pump.

OPERATING DEVICE AND GRIP COVER

An operating device comprises a base member and an operating member. The base member includes a first end portion, a second end portion, and a grip portion. The first end portion is configured to be coupled to a handlebar. The second end portion is opposite to the first end portion. The grip portion is provided between the first end portion and the second end portion. The operating member is pivotally coupled to the base member about a pivot axis. The base member includes a first lateral surface, a second lateral surface, and a first positioning portion. The second lateral surface is provided on a reverse side of the first lateral surface in a pivot axis direction parallel to the pivot axis. The first positioning portion is provided on the first lateral surface. The first positioning portion is configured to position a rider's finger. 1. An operating device comprising: a first end portion configured to be coupled to a handlebar,', 'a second end portion opposite to the first end portion, and', 'a grip portion provided between the first end portion and the second end portion; and, 'a base member including'}an operating member pivotally coupled to the base member about a pivot axis, a first lateral surface,', 'a second lateral surface provided on a reverse side of the first lateral surface in a pivot axis direction parallel to the pivot axis, and', "a first positioning portion provided on the first lateral surface, the first positioning portion being configured to position a rider's finger."], 'the base member including'}2. The operating device according to claim 1 , whereinthe first positioning portion includes a first recess.3. The operating device according to claim 1 , whereinthe rider's finger includes a thumb of the rider.4. The operating device according to claim 1 , whereinthe base member further includes a second positioning portion provided on the second lateral surface, the second positioning portion being configured to position a rider's another finger.5. ...

OPERATING DEVICE

An operating device comprises a base member and an operating member. The base member is configured to be mounted to one of a dropdown portion and a bar end portion of a handlebar. The base member includes a cylinder bore and a reservoir bore. The cylinder bore has a cylinder center axis. The reservoir bore has a reservoir center axis. The operating member is pivotally coupled to the base member about a pivot axis. The cylinder center axis is offset from the reservoir center axis in a pivot axis direction parallel to the pivot axis and in a perpendicular direction perpendicular to both the pivot axis and the cylinder center axis. 1. An operating device comprising: a cylinder bore having a cylinder center axis, and', 'a reservoir bore having a reservoir center axis; and, 'a base member having a first end portion configured to be mounted to one of a dropdown portion and a bar end portion of a handlebar, the base member including'}an operating member pivotally coupled to the base member about a pivot axis,the cylinder center axis being offset from the reservoir center axis in a pivot axis direction parallel to the pivot axis and in a perpendicular direction perpendicular to both the pivot axis and the cylinder center axis, whereinthe cylinder bore is disposed between the operating member and the first end portion.2. The operating device according to claim 1 , whereinthe pivot axis is provided above the cylinder center axis in a mounting state where the base member is mounted to the handlebar.3. An operating device comprising: a cylinder bore having a cylinder center axis, and', 'a reservoir bore having a reservoir center axis; and, 'a base member configured to be mounted to one of a dropdown portion and a bar end portion of a handlebar, the base member including'}an operating member pivotally coupled to the base member about a pivot axis,the pivot axis is provided entirely above the cylinder bore in a mounting state where the base member is mounted to the handlebar, the ...

TRAVELING CONTROL MECHANISM AND TRAVELING CONTROL METHOD OF HYDRAULIC DRIVING TYPE CONSTRUCTION MACHINE

To provide a traveling control mechanism and a traveling control method capable of controlling a traveling mechanism taking into consideration operation contents of a remote control valve. The problem is solved by a traveling control mechanism comprising a remote control valve (), a pressure adjusting solenoid valve (), a setting mechanism (), and a controller (). The traveling mechanism () allows a traveling speed to be switched between a high speed and a low speed in accordance with an operation amount of the remote control valve (). An HST circuit () is provided with a pump () and a traveling motor (), the pump () connects to a pilot line () allowing a hydraulic oil supplied from the remote control valve () to flow therethrough, a pressure sensor () is attached to the pilot line (), and a rotation sensor () is attached to the traveling motor (). The controller () controls a pressure of the hydraulic oil supplied from the remote control valve () independently of a manual operation of the remote control valve (), on the basis of a setting signal, a pressure signal, and a rotation speed signal. The remote control valve () controls a flow rate of the hydraulic oil discharged from the pump () by changing or keeping constant the pressure inside the pilot line (). 1. A traveling control mechanism that controls a traveling mechanism configured by an HST circuit and provided to each of a left and a right of a construction machine , the traveling control mechanism comprising:a remote control valve that controls an operation of the construction machine;a pressure adjusting solenoid valve that adjusts a primary pressure of a hydraulic oil supplied to the remote control valve;a setting mechanism for executing a fixed setting to make the construction machine perform a desired operation; anda controller for controlling the traveling mechanism, wherein:the traveling mechanism is configured to be capable of switching a traveling speed of the construction machine between a high ...

PNEUMATIC PRESSURE BRAKE BOOSTER SYSTEM AND METHOD

A pneumatic pressure brake booster system includes an air pressure chamber; an ambient air chamber; a flexible diaphragm separating the air pressure chamber and the ambient air chamber; at least one air pressure source communicating with the air pressure chamber; a brake pedal shaft engaged by and movable with the diaphragm; and a brake master cylinder engaged by the brake pedal shaft. 1. A pneumatic pressure brake booster system , comprising:an air pressure chamber;an ambient air chamber;a flexible diaphragm separating the air pressure chamber and the ambient air chamber;at least one air pressure source communicating with the air pressure chamber;a brake pedal shaft engaged by and movable with the diaphragm; anda brake master cylinder engaged by the brake pedal shaft.2. The system of wherein the at least one air pressure source comprises engine intake air.3. The system of wherein the at least one air pressure source comprises an auxiliary pressure pump.4. The system of further comprising a hose coupling detachably coupling the auxiliary pressure pump to the air pressure chamber.5. The system of further comprising at least one ambient air vent communicating with the ambient air chamber.6. The system of wherein the at least one ambient air vent comprises a plurality of ambient air vents.7. The system of wherein the at least one air pressure source communicating with the air pressure chamber comprises a plurality of air pressure sources communicating with the air pressure chamber.8. The system of wherein the plurality of air pressure sources communicating with the air pressure chamber comprises engine intake air and an auxiliary pressure pump communicating with the air pressure chamber.9. A pneumatic pressure brake booster system claim 7 , comprising:a booster shell having a brake pedal side and a brake master cylinder side;an air pressure chamber in the booster shell on the brake pedal side;an ambient air chamber in the booster shell on the brake master cylinder side ...

Self-contained fluid-power servomechanism

An example method of using a servomechanism can include controlling a reversible positive displacement pump that is located in a first chamber of a housing to push a fluid, via a first passage in the housing, against one side of a vane that is rotably disposed in a second chamber of a housing to rotate an output shaft that is coupled to the vane and controlling the reversible positive displacement pump to push a fluid, via a second passage in the housing, against another side of a vane to reverse rotation of the output shaft.

Method for controlling pressure in a hydraulic actuator

In conventional load-sense systems, there is a delay between a hydraulic function being impeded by an external force and further motion of the function. This is typically due to cavitation on the low pressure side of the pump. Electro-hydraulic systems, however, typically respond very quickly because the low pressure side of the pump may be pressurized because the low-pressure side of the actuator may feed directly to the pump rather than going to tank. Thus, an operator cannot as easily rely on feedback for when a function has encountered an external load. This may result in loss of vehicle traction or other drawbacks. Therefore, provided is a system and method for mimicking a load-sense system's responsiveness using an electro-hydrostatic system via an induced passive or active time-delay.

ADDITIVELY MANUFACTURED ROTARY ACTUATOR

A rotary actuator and a method of additively manufacturing the same are provided. The rotary actuator includes a valve housing defining a valve chamber and a shaft channel extending from the valve chamber. A valve body includes a valve shaft extending through the shaft channel and a valve head positioned within the valve chamber and defining a head width that is larger than the channel diameter to inseparably join the valve body and the valve housing. The valve head divides the valve chamber into a first chamber and a second chamber which are in fluid communication with a first port and a second port, respectively. The valve body is rotated by adjusting a fluid pressure within at least one of the first chamber and the second chamber. 1. An additively manufactured rotary actuator , comprising:a valve housing defining a substantially enclosed valve chamber and a shaft channel extending from the valve chamber, the shaft channel defining a channel diameter; anda valve body comprising a valve shaft extending through the shaft channel and a valve head positioned within the valve chamber, the valve head dividing the valve chamber into a first chamber and a second chamber, and wherein the valve head defines a head width that is larger than the channel diameter, the valve body being rotatable about an axis of rotation within the valve housing between a first position and a second position.2. The rotary actuator of claim 1 , wherein the axis of rotation is co-linear with a central axis defined by the shaft channel.3. The rotary actuator of claim 1 , further comprising:one or more wiper blades extending from the valve head toward the valve housing, a wiper gap being defined between the one or more wiper blades and the valve housing.4. The rotary actuator of claim 3 , wherein the wiper gap is between about 0.1 millimeters and 0.15 millimeters.5. The rotary actuator of claim 1 , wherein the valve head comprises a radial flag extending from one side of the valve shaft along a ...

SYSTEMS AND METHODS FOR MANAGING NOISE IN COMPACT HIGH SPEED AND HIGH FORCE HYDRAULIC ACTUATORS

Presented herein are systems and methods for attenuating certain pulsations in a hydraulic system comprising a pump and a hydraulic actuator. In certain aspects, an accumulator comprising an internal volume that is divided into a working chamber and a contained chamber may be utilized to at least partially attenuate propagation of certain pulsations in the system. The working chamber may be fluidically coupled to the pump via a first flow path and fluidically coupled to a chamber of the actuator via a second flow path. The system may be designed such that a first inertance of the first flow path is greater than a second inertance of the second flow path. Additionally or alternatively, the system may be designed such that a resonance associated with the first inertance and a compliance of the accumulator may occur at a resonance frequency of less than 90 Hz. 120-. (canceled)21. A hydraulic apparatus comprising:a hydraulic actuator comprising an actuator housing that at least partially defines a compression chamber and an extension chamber;a pump; the first working chamber is fluidically coupled to the pump by a compression-side first flow path having a first inertance;', 'the first working chamber is fluidically coupled to the compression chamber by a compression-side second flow path having a second inertance; and', 'the first inertance is larger than the second inertance., 'a compression-side accumulator housing defining a first internal volume that is divided, by a first barrier, into a first contained chamber and a first working chamber, wherein, 'a compression-side accumulator comprising22. The hydraulic apparatus of claim 21 , wherein a first TFmag of a first transfer function has at least one of a first global maximum or first local maximum at a first frequency claim 21 , and a second TFmag of a second transfer function has at least one of a second global maximum or second local maximum at a second frequency claim 21 , wherein:the second frequency is higher ...

SEMI-CLOSED LOOP HYDRAULIC SYSTEM FOR MATERIAL APPLICATION MACHINES

A semi-closed loop hydraulic circuit includes a prime move, a first hydraulic circuit operatively coupled to the prime mover, and a second hydraulic circuit operatively coupled to the prime mover. The second hydraulic circuit is fluidly coupled to the first hydraulic circuit. 1. A semi-closed loop hydraulic system comprising:a prime mover;a first hydraulic circuit operatively coupled to the prime mover; anda second hydraulic circuit operatively coupled to the prime mover, wherein the second hydraulic circuit is fluidly coupled to the first hydraulic circuit.2. The semi-closed loop hydraulic system of claim 1 , wherein the first hydraulic circuit comprises:a first hydraulic pump operatively coupled to the prime mover; anda driven actuator fluidly coupled to the first hydraulic pump.3. The semi-closed loop hydraulic system claim 2 , of claim 2 , wherein the second hydraulic circuit comprises:a working fluid reservoir; anda second hydraulic pump fluidly coupled to the working fluid reservoir and operatively coupled to the prime mover.4. The semi-closed loop hydraulic system of claim 2 , wherein a first fluid flow path of the first hydraulic circuit and a second fluid flow path of the second hydraulic circuit combine into a combined fluid flow path at a position downstream of the driven actuator.5. The semi-closed loop hydraulic system of claim 4 , wherein the combined fluid flow path is directed toward a check valve claim 4 , wherein fluid flow having a pressure greater than a predetermined pressure is directed into the second hydraulic circuit and a remaining working fluid is directed toward an inlet of the first hydraulic pump.6. A material application machine comprising:a reservoir;a discharge pipe fluidly coupled to the reservoir; and a prime mover;', 'a first hydraulic circuit operatively coupled to the prime mover; and', 'a second hydraulic circuit operatively coupled to the prime mover, wherein the second hydraulic circuit is fluidly coupled to the first ...

Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same

Provided is an electrohydrostatic actuation system including an emergency shut-off circuit to be actuated stably with a simple configuration. The electrohydrostatic actuation system includes: a hydraulic cylinder ( 24 ) including a piston ( 25 ) to which a valve element is connected, a first chamber ( 24 A), and a second chamber ( 24 B); a hydraulic pump ( 21 ) configured to supply hydraulic fluid to the first chamber ( 24 A) or the second chamber ( 24 B); a servo motor (M) configured to drive the hydraulic pump ( 21 ); a shuttle valve ( 11 ) configured to establish communication to a downstream side under a state in which a hydraulic pressure generated by the hydraulic pump ( 21 ) is maintained; a solenoid valve ( 12 ) configured to receive the hydraulic pressure via the shuttle valve ( 11 ) as a pilot pressure; and a logic valve ( 13 ) including a first port configured to receive the pilot pressure from the solenoid valve ( 12 ), and a second port to be communicated to the first chamber ( 24 A) of the hydraulic cylinder ( 24 ). When the solenoid valve ( 12 ) is brought to a de-energized state, the pilot pressure of the logic valve ( 13 ) is released, and the logic valve ( 13 ) causes the hydraulic fluid in the first chamber ( 24 A) communicated to the second port to flow into the second chamber ( 24 B) so that emergency shut-off of the valve element is achieved by a return spring ( 26 ).

HYDRAULIC POWER SYSTEM AND METHOD FOR CONTROLLING SAME

A system and method is provided for monitoring a hydraulic power system having at least one light emitter and a button. The method includes powering on the hydraulic power system, receiving an actuation at the button and detecting a release of the button after a first time interval, and entering a diagnostic state. The method further includes retrieving a code and displaying the code by turning on the emitter in a first pattern. In some embodiments, a system and method is provided for regulating a temperature of a hydraulic power system. In some embodiments, a system and method is provided for controlling operation of a hydraulic torque wrench. 1. A method for monitoring a hydraulic power system , the hydraulic power system including at least one light emitter and a button , the method comprising:receiving an actuation at the button;detecting a release of the button after a first time interval and entering a diagnostic state;retrieving a code; anddisplaying the code by turning on the emitter in a first pattern.2. The method of claim 1 , wherein the code is a first code claim 1 , and wherein the method further comprises:retrieving a second code;subsequent to displaying the first code, displaying a delay sequence using the emitter; andsubsequent to displaying the delay sequence, displaying a second code by turning on the emitter in a second pattern.3. The method of claim 1 , further comprising providing a first vibrational pattern corresponding to the first pattern.4. The method of claim 1 , further comprising:subsequent to detecting a release, receiving an actuation at and detecting a release of the button, and entering a diagnostic sub-state;retrieving a life cycle code; anddisplaying the life cycle code by turning on the emitter in a third pattern.5. The method of claim 4 , wherein the life cycle code is an integer value claim 4 , and wherein displaying the life cycle code includes displaying the life cycle code in scientific notation claim 4 , includingflashing ...

SOFT ROBOTIC ACTUATORS

A soft robotic device includes a flexible body having a width, a length and a thickness, wherein the thickness is at least 1 mm, the flexible body having at least one channel disposed within the flexible body, the channel defined by upper, lower and side walls, wherein at least one wall is strain limiting; and a pressurizing inlet in fluid communication with the at least one channel, the at least one channel positioned and arranged such that the wall opposite the strain limiting wall preferentially expands when the soft robotic device is pressurized through the inlet. 1. A soft robotic actuator , comprising:a molded body comprising a plurality of interconnected chambers disposed within the molded body, wherein a first portion of the molded body is strain limiting relative to a second portion of the molded body, wherein the first portion of the molded body has a thickness greater than the second portion of the molded body;wherein the second portion of the molded body is configured to preferentially expand when the plurality of interconnected chambers are pressurized by fluid, causing a bending motion around the first portion of the molded body.2. The soft robotic actuator of claim 1 , wherein the first portion of the molded body is formed using a material with a higher elastic modulus compared to that of a material forming the second portion of the molded body.3. The soft robotic actuator of claim 1 , wherein the molded body comprises a reinforcing material to increase toughness and resistance to damage.4. A soft robotic actuator claim 1 , comprising:a molded body comprising a plurality of interconnected chambers disposed within the molded body, wherein a strain limiting portion of the molded body is strain limiting relative to other portions of the molded body, and wherein the plurality of interconnected chambers comprise at least one wall that is thinner than the strain limiting portion of the molded body,wherein the at least one wall is configured to ...

Flow control valve having a motion conversion device

A motion conversion device is disclosed for converting motion in one direction into motion in another direction. The motion conversion device may include a single-acting cylinder hydraulically or pneumatically coupled to a double-acting cylinder such that movement of the single-acting cylinder along an axis causes movement of the double-acting cylinder along a non-parallel axis. The single-acting cylinder may be mechanically coupled to another single-acting cylinder such that movement of one of the single-acting cylinders in a direction causes movement of the other one of the single-acting cylinders in an opposite direction. In this way, the single-acting cylinders may cooperate to provide reciprocal motion of the double-acting cylinder. Also disclosed is a valve incorporating a motion conversion device for the purpose of moving a closure member between an open position and a closed position. Furthermore, a method for operating a valve closure member with a motion conversion device is disclosed.

MECHANICALLY PROGRAMMABLE CLOSED FLUID ACTUATION SYSTEM

Aspects of the disclosure relate to methods, apparatus, and systems for actuating a soft robot. An actuation system includes a camshaft, a motor configured to drive the camshaft to rotate around a rotational axis, and an air bladder configured to expel fluid from the air bladder during compression and draw fluid into the air bladder during decompression. The system further includes a cam coupled to the camshaft that is configured to rotate around the rotational axis when the camshaft is driven and compress or decompress the air bladder based on a physical profile of the cam as the cam rotates around the rotational axis. The system also includes a soft robot coupled to the air bladder, wherein the soft robot is actuated to move based on the fluid inserted into the soft robot during compression or the fluid removed from the soft robot during decompression. 1. An actuation system for actuating a soft robot , the actuation system comprising:a camshaft;a motor configured to drive the camshaft to rotate around a rotational axis;an air bladder configured to expel fluid from the air bladder during compression of the air bladder and draw fluid into the air bladder during decompression of the air bladder; rotate around the rotational axis when the camshaft is driven, and', 'compress or decompress the air bladder based on a physical profile of the cam as the cam rotates around the rotational axis; and, 'a cam coupled to the camshaft and configured toa soft robot coupled to the air bladder, wherein the soft robot is actuated to move based on the fluid expelled from the air bladder that is inserted into the soft robot during compression of the air bladder or the fluid removed from the soft robot that is drawn into the air bladder during decompression of the air bladder.2. The actuation system of claim 1 , further comprising:a hinge configured to cooperate with the cam; anda finger formed on the hinge,wherein the hinge moves in a direction away from the rotational axis or a ...

Sealing High Pressure Flow Devices

Apparatus and method contemplating a high pressure fluid end assembly having a body defining a body bore and defining a recess in the body intersecting the body bore. A closure is joined to the body and forms a sealing surface. A seal is mounted to the body in the recess and configured to extend from the recess beyond the body bore to seal against the sealing surface formed by the closure. 1. An apparatus , comprising:a fluid end housing in which a plurality of bores, including a plunger bore and a suction bore, are formed, wherein the plunger bore has a first segment and a second segment, wherein the first segment has a groove and is located closer to the suction bore than the second segment, and wherein the second segment has a greater diameter than the first segment; a first sleeve portion having a constant first inner diameter and a constant first outer diameter;', 'a second sleeve portion having a constant second inner diameter and a constant second outer diameter, wherein the second inner diameter and second outer diameter are greater than the first inner diameter and first outer diameter, respectively; and', 'a third sleeve portion that includes at least one groove around an exterior of the third sleeve portion;, 'a sleeve installed within the plunger bore, wherein the sleeve includeswherein the first sleeve portion is installed within the first segment of the plunger bore and the second sleeve portion and third sleeve portion are installed within the second segment of the plunger bore such that the second sleeve portion is closer to the first sleeve portion;stuffing box packing located within the second and third sleeve portions; anda seal that is positioned in the groove and that engages with the first sleeve portion.2. The apparatus of claim 1 , wherein the third sleeve portion has a third constant inner diameter that is the same as the second inner diameter.3. The apparatus of claim 1 , wherein the first segment of the plunger bore and the second segment ...

Hydraulic valve and system

An apparatus includes a hydraulic circuit that is configured to selectively open fluid communication between one portion of the hydraulic circuit and another portion of the hydraulic circuit, such as a reservoir, based on the flow of the hydraulic fluid in the one portion. When the flow of hydraulic fluid exceeds a selected threshold in the one portion of the hydraulic circuit, the flow of fluid urges the opening of a hydraulic component of the hydraulic circuit to allow fluid communication between the one portion and the reservoir to discharge fluid from the one portion.

BICYCLE HYDRAULIC COMPONENT

A bicycle hydraulic component includes a base, a plug, and a fluid stopper. The base includes a hydraulic chamber, a first bore having a first bore diameter and being in fluid communication with the hydraulic chamber, a second bore extending from the first bore and having a second bore diameter greater than the first bore diameter, and a seat surface extending between the first bore and the second bore. The plug is coupled to the second bore. The fluid stopper is configured to be accommodated in the second bore and to be pressed by the plug to seal the first bore. The fluid stopper is an individual member with respect to the plug. 1. A bicycle hydraulic component comprising: a hydraulic chamber,', 'a first bore having a first bore diameter and being in fluid communication with the hydraulic chamber,', 'a second bore extending from the first bore and having a second bore diameter greater than the first bore diameter, and', 'a seat surface extending between the first bore and the second bore;, 'a base including'}a plug coupled to the second bore; anda fluid stopper configured to be accommodated in the second bore and to be pressed by the plug to seal the first bore, the fluid stopper being an individual member with respect to the plug.2. The bicycle hydraulic component according to claim 1 , wherein the plug includes an end face that contacts the fluid stopper and presses the fluid stopper onto the seat surface.3. The bicycle hydraulic component according to claim 1 , whereinthe fluid stopper directly contacts the seat surface, andthe plug directly contacts the fluid stopper.4. The bicycle hydraulic component according to claim 1 , whereinthe fluid stopper has a center point,the first bore has a bore axis, andthe seat surface is configured such that the plug presses the fluid stopper to align the center point of the fluid stopper with the bore axis of the first bore.5. The bicycle hydraulic component according to claim 4 , wherein the seat surface includes an annular ...

Actuator device and method for setting a position of a linearly movable element

An actuator device for producing a linear movement, has a hydraulic actuator which includes a first piston element for actuating the actuator and a second piston element for producing the linear movement. The piston elements are assigned respective fluidically coupled working chambers, the volumes of which can be changed by movement of the respective piston element. A piezoelectric actuator is provided for exerting a force on the first piston element.

PRESSURIZED GAS ENGINE AND METHOD OF OPERATING A PRESSURIZED GAS ENGINE

A compressed gas motor. The motor has a port and a hollow cylinder delimited by a wall with a ventilation opening, a rear closure, and a plunger axially movable in the cylinder. The plunger divides the cylinder into front and back chambers. The ventilation opening is periodically opened towards the back chamber during operation of the motor by movement of the plunger. A compression spring in the front chamber urges the plunger towards the rear closure and/or a tension spring in the back chamber draws the plunger towards the rear closure so that the back chamber is closed relative to the ventilation opening by the plunger and the back chamber is connected with the port when the same pressure prevails in the front and back chambers. The motor can be used in surgical drive systems, medical lavage systems and medical devices. Also disclosed is a method for operating the motor. 1. A compressed gas motor comprising:a cylinder jacket wall defining a hollow cylinder with a front base and a rear base, the cylinder jacket wall having at least one ventilation opening;a rear closure at the rear base of the hollow cylinder;a drive rod projecting out of the hollow cylinder and having a front end;a plunger having a front end connected with the drive rod and being axially movable in the hollow cylinder, wherein the plunger divides the hollow cylinder into a back inner chamber delimited by the plunger, the cylinder jacket wall, and the rear closure and a front inner chamber delimited by the plunger, the cylinder jacket wall, and the front base, wherein the at least one ventilation opening in the cylinder jacket wall is configured to connect the back inner chamber of the hollow cylinder with the surrounding atmosphere for passage of gas during operation of the compressed gas motor and wherein the at least one ventilation opening periodically opens toward the back inner chamber during operation of the compressed gas motor by movement of the plunger;at least one compressed gas port ...

Prime Mover System and Methods Utilizing Balanced Flow within Bi-Directional Power Units

Systems, methods and devices are described providing a selective hydraulic or electrically powered prime mover that is a (bi-directional power unit) PU system, including movement within a device or system used to compress and/or expand a fluid and provide fluid movement within the same device or system. The use of a (hydraulic power unit) HPU is involved and comprises at least a pump or other hydraulic fluid moving device often referred to as a “prime mover”, one or more first set of selective control valves delivering pressurized fluid to the device(s), and one or more second set of selective control valves returning unpressurized fluid from the device(s), a reservoir comprising a compensator tank, a port allowing for operation at ambient pressure, and a pressure measuring device measuring ambient pressure allowing for unbalanced flow to and from the mechanical (user) device as well as thermal expansion or compression. 1. A prime mover apparatus and system for actuating and moving one or more devices in either a single or bi-directional direction using at least one hydraulic power unit(s) comprising;one or more pumps, said pumps having at least one inlet and at least one outlet port maintaining pressure to pump fluid in either a clockwise or counterclockwise direction into and out of a pipeline such that said fluid enters and exits said pumps from either a designated clockwise (CW) or counterclockwise (CCW) outlet port thereby creating a clockwise or counterclockwise flow path utilizing valves ensuring balanced fluid flow into and out of said pumps.2. The prime mover apparatus and system of claim 1 , wherein said valves allow for fluid flow into and out of at least one reservoir.3. The prime mover apparatus and system of claim 1 , wherein said at least one reservoir is vented claim 1 , sealed claim 1 , pressure compensated claim 1 , preloaded and/or expandable.4. The prime mover apparatus and system of claim 1 , wherein said valve(s) open and close ensuring ...

Apparatus and method for supplying fuel to engine of ship

Disclosed herein are an apparatus and a method for supplying a fuel to an engine of a ship. The apparatus for supplying a fuel to an engine of a ship includes: a high pressure pump pressurizing a liquefied natural gas (LNG) and supplying the pressurized LNG to the engine; a hydraulic motor driving the high pressure pump; and a lubricating pump supplying lubricating oil to the high pressure pump.

Composite Spring Retainer And Method Of Assembly In A Brake Master Cylinder

A cup shaped spring retainer is slidably disposed within a cup shaped piston, encapsulating a spring therebetween. The side wall of the spring retainer presents a plurality of recesses and a plurality of slots defining a plurality of fingers. A tang, projects radially outward at the distal end of each of the fingers to engage a retaining ring within the piston in a latch position. The combination of the spring retainer and the piston provide an arrangement whereby all of the fingers may be compressed with the spring retainer outside of the piston to an insert position with the tangs disposed in gripping engagement with the spring. After inserting the compressed spring retainer into the piston, the radial compression the of the fingers may be released to allow the fingers to expand from the insert position to the latch position at which point the deflection of the fingers is discontinued.

TRANSMISSION SYSTEM

A transmission system () includes a first piston (), a second piston () and a modulator piston (). The first piston () receives an input force (F), the second piston () transmits an output force (F), and the modulator piston () transmits a modulating force (F>which modulates the input force (F) received by the second piston () to implement tremor cancellation and force and/or provide variable motion scaling. 1. A transmission system , comprising:an input piston configured to receive an input force;a modulator piston operatively associated with the first piston and configured to modulate the input force; andan output piston operatively associated with the first piston and the modulator piston, the output piston configured to receive the modulated input force and output an output force from the transmission system.2. The transmission system of claim 1 , wherein the transmission system is configured to modulate the input force by attenuating or dampening the input force to provide a reduced output force and/or reduced displacement of the output piston.3. The transmission system of claim 1 , wherein the transmission system is configured to modulate the input force to provide an increased output force from the output piston and/or increased displacement of the output piston where required.4. The transmission system of claim 1 , wherein the transmission system comprises or takes the form of a hydraulic transmission system.5. The transmission system of claim 1 , comprising an input actuator claim 1 , wherein the input piston forms part of the input actuator.6. The transmission system of claim 1 , comprising an output actuator claim 1 , wherein the output piston forms part of the output actuator.7. The transmission system of claim 1 , comprising a control actuator claim 1 , the modulator piston forming part of the control actuator.8. The transmission system of claim 1 , comprising a sealed chamber configured to communicate with the input piston claim 1 , the output piston ...