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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 9773. Отображено 100.
21-06-2012 дата публикации

Work vehicle

Номер: US20120152642A1
Автор: Hirotaka Takahashi, Toru Shiina
Принадлежит: KOMATSU LTD

In the work vehicle, a controller is configured to control a motor displacement control part via feedback control so that the driving hydraulic pressure detected by a driving hydraulic pressure detector approaches a predetermined target driving hydraulic pressure. The controller is configured to perform low temperature motor displacement limitation control, which reduces the maximum displacement of a hydraulic motor, when the temperature of the hydraulic fluid detected by the fluid temperature detector is lower than a predetermined temperature.

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Номер записи: 1
28-06-2012 дата публикации

Air cylinder

Номер: US20120160090A1
Автор: Akiyoshi Kato, Naoki Shinjo
Принадлежит: SMC Corp

An air cylinder that can prevent foreign substances from intruding inside in an environment where fine foreign substances such as dust are scattered. The air cylinder includes, in a through hole of a rod cover, an annular lubricator impregnated with a lubricant so as to supply the lubricant to the rod and a liquid-absorptive annular dust wiper not containing a lubricant and provided for preventing fine foreign substances such as powder stuck to the rod from intruding inside. The lubricator and the dust wiper are disposed air-tightly and slidably in contact with the rod, and the dust wiper is located closer to a leading end of the rod than the lubricator.

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Номер записи: 2
30-08-2012 дата публикации

Charge bypass system for engine start

Номер: US20120220426A1
Автор: Christopher R. Benson, Heidi K. Klousia
Принадлежит: Deere and Co

The present invention provides an engine start system in a vehicle. The engine start system includes an engine and a charge system. The vehicle also includes an engine speed sensor for measuring a speed of the engine. The charge system is coupled to the engine and includes a charge pump. The vehicle further includes a control unit and a temperature sensor for sensing a temperature of fluid in the charge system. The temperature sensor is electrically coupled to the control unit. A bypass system is fluidly coupled to the charge system and includes a valve and a solenoid. The solenoid is electrically coupled to the control unit such that the control unit energizes the solenoid to control the valve in response to the speed measured by the speed sensor and the temperature sensed by the temperature sensor.

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Номер записи: 3
20-09-2012 дата публикации

Control system for hybrid construction machine

Номер: US20120233998A1
Автор: Haruhiko Kawasaki, Masahiro Egawa
Принадлежит: Kayaba Industry Co Ltd

A regeneration switching valve which communicates with a neutral flow path and a tank at a normal position and cuts off communication between the neutral flow path and the tank to cause the neutral flow path to communicate with a hydraulic motor for power generation at a switched position is provided in at least one of first and second circuit systems including a plurality of control valves.

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Номер записи: 4
18-10-2012 дата публикации

Hydraulic exsiccate device

Номер: US20120260515A1
Автор: Richard Pindell
Принадлежит: PINDELL ENGR Inc

A hydraulic exsiccate device lessens the presence of or prevents water vapor from entering the fluid reservoir of hydraulic machines which helps to reduce or eliminate damage to hydraulic systems used in environments such as boating, utilities, construction, manufacturing, fishing, industrial, marine, agriculture, military, mining, and so on. The hydraulic exsiccate device eliminates hydraulic reservoir fill caps, and in their place, the hydraulic exsiccate device is used as a cover fitting for closing the fluid reservoir (configured to conduct hydraulic fluid in the hydraulic systems) which operates to lessen the presence of or prevent water vapor from entering the fluid reservoir.

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Номер записи: 5
06-12-2012 дата публикации

Oil tank

Номер: US20120305114A1
Автор: Yukio Uenishi
Принадлежит: U Tec Co Ltd

An oil tank has return oil from a hydraulic circuit diffused onto a surface of oil stored in a tank body, and thereby the return oil is prevented from going deep in the oil, so that a hydraulic pump is prevented from sucking oil containing air bubbles. The oil tank includes: an intake port provided in the vicinity of a bottom of the tank body and connected to the hydraulic pump of a hydraulic circuit; and an return oil inlet connected to a return pipe of the hydraulic circuit through which the return oil enters the tank body. In the tank body, a container adapted to hold the return oil is provided. The container is configured so that the return oil inlet opens in the vicinity of the bottom of the container.

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Номер записи: 6
04-04-2013 дата публикации

FLUID COOLING DEVICE

Номер: US20130081387A1
Автор: Mariani Luca, Zeolla Guiseppe
Принадлежит:

The invention relates to a fluid cooling device () as a structural unit having a drive motor () which drives a rotatable fan impeller (), and having a storage tank () which has a filling opening () as well as a fill-level indicator () and from which at least one fluid can be conveyed into a hydraulic working circuit, wherein in the hydraulic working circuit the fluid is heated and is cooled via a heat exchanger () of the structural unit, and preferably returned into the storage tank (). The invention is characterised in that the structural unit is designed as a turning assembly in which the filling opening () for fluid and the fill-level indicator () are disposed on the storage tank () in such a way that they can be used and Mad in the case of a first, preferably vertical installation direction (X, Y) of the structural unit, and in the case of a second installation direction (Y, X) which is inclined with respect to the fast installation direction (X, Y), preferably at right angles thereto. 1123467514674. A fluid cooling device () as a structural unit having a drive motor () which drives a rotatable fan impeller () , and having a storage tank () which has a filling opening () and a fill-level indicator () and from which at least one fluid can be conveyed into a hydraulic working circuit , wherein in the hydraulic working circuit the fluid is heated and cooled via a heat exchanger () of the fluid cooling device () , and preferably can be returned again to the storage tank () , characterized in that the structural unit is made as a turning assembly , in which the filling opening () for fluid and the fill-level indicator () are located on the storage tank () such that the indicator can be used or read in a first preferably vertical installation direction (X , Y) of the structural unit and in a second installation direction (Y , X) of the structural unit which is tilted relative to the first installation direction (X , Y) and which is provided preferably at a right angle ...

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Номер записи: 7
11-04-2013 дата публикации

Fluid controlling apparatus and method of controlling fluid by using the same

Номер: US20130086998A1
Автор: Hyo-Young Jeong, Jeong-Gun Lee, June-Young LEE, Sang-Hyun Baek, Tae-Seok Sim
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A fluid controlling apparatus including at least one sample chamber for holding a fluid containing target materials; a cleaning chamber for holding a cleaning solution; a first multi-port connected to the at least one sample chamber through a first channel and connected to the cleaning chamber through a second channel; a filter portion, connected to the first multi-port through a third channel, for filtering the target materials; and a first pump, connected to the filter portion, for applying a pressure; and a method of controlling a fluid using the fluid controlling apparatus, which comprises passing the fluid containing the target materials from the at least one sample chamber to the filter portion; and cleaning a path of the fluid by passing the cleaning solution through the path.

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Номер записи: 8
04-07-2013 дата публикации

WORK VEHICLE FLUID HEATING SYSTEM

Номер: US20130167823A1
Автор: BERARD Craig, DEAN Patrick
Принадлежит: CNH AMERICA LLC

A fluid heating system for a work vehicle includes a pressurized fluid circuit having a pump for providing pressurized fluid to the fluid circuit. A control module for controlling a first control device is in fluid communication with the fluid circuit, the first control device operable between a first position and a second position. The first position of the first control device permits a load sense pressure to be applied through the first control device, thereby preventing pressurized fluid from the pump flowing to a pressure return tank for heating the pressurized fluid. The second position of the first control device prevents the load sense pressure from being applied through the first control device, thereby permitting pressurized fluid from the pump flowing to a pressure return tank and resulting in heating of pressurized fluid of the fluid circuit. 1. A fluid heating system for a work vehicle comprising:a pressurized fluid circuit having a pump for providing pressurized fluid to the fluid circuit;a control module for controlling a first control device in fluid communication with the fluid circuit, the first control device operable between a first position and a second position;wherein the first position of the first control device permitting a load sense pressure to be applied through the first control device, thereby preventing pressurized fluid from the pump flowing to a pressure return tank for heating the pressurized fluid;wherein the second position of the first control device preventing the load sense pressure from being applied through the first control device, thereby permitting pressurized fluid from the pump flowing to a pressure return tank and resulting in heating of pressurized fluid of the fluid circuit.2. The fluid heating system of claim 1 , wherein in the second position of the first control device claim 1 , pressurized fluid is bifurcated into a first flow path and a second flow path claim 1 , the first flow path being in fluid communication ...

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Номер записи: 9
18-07-2013 дата публикации

WARM UP CYCLE FOR A MATERIALS HANDLING VEHICLE

Номер: US20130183127A1
Автор: Dammeyer Karl L., Ihle Darrin R., McClain Marc A., Obringer David J., Steinbrunner Cole T., Thobe Nicholas D.
Принадлежит:

A method for operating a materials handling vehicle includes activating the materials handling vehicle and performing a warm up cycle. During the warm up cycle, energy is provided to at least one valve within the materials handling vehicle so as to energize the valve without providing a working fluid to the valve. Providing energy to the at least one valve effects a heating of oil located within the at least one valve. 1. A method for operating a materials handling vehicle comprising:activating the materials handling vehicle; andperforming a warm up cycle comprising providing energy to at least one valve within the materials handling vehicle so as to energize the valve without providing a working fluid to the valve, wherein providing energy to the at least one valve effects a heating of oil located within the at least one valve.2. The method as set out in claim 1 , further comprising performing a power up cycle after activating the vehicle and before performing the warm up cycle claim 1 , wherein the power up cycle comprises verifying the operability of at least one vehicle component.3. The method as set out in claim 1 , wherein the oil comprises a residue oil for the at least one valve.4. The method as set out in claim 3 , further comprising checking a temperature of the working fluid claim 3 , the working fluid comprising a hydraulic fluid that is circulated within a hydraulic fluid circuit including the at least one valve for implementing one or more vehicle functions associated with the at least one valve.5. The method as set out in claim 4 , where the energy is only provided to the at least one valve if the temperature of the working fluid is determined to be below a threshold temperature.6. The method as set out in claim 5 , wherein the threshold temperature is equal to or less than about −10° Celsius.7. The method as set out in claim 1 , further comprising prompting an operator if the warm up cycle is to be performed and only performing the warm up cycle if ...

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Номер записи: 10
26-09-2013 дата публикации

Working machine

Номер: US20130251490A1
Автор: Hiroshi Horii, Hisayuki Hiramatsu, Toshiaki Otani
Принадлежит: Kubota Corp

A working machine rendered to change in setting a maximum value of an absorption torque of hydraulic pump to a rather high value when the working machine is in a specified state, solves problems that, when an operation lever is being operated in an intermediate position of a lever stroke, there occurs a swinging in a machine body due to change-over of a maximum absorption torque setting value so that the operation lever is relatively moved with respect to the machine body to exert an influence on operability and the machine body acting violently. When the maximum absorption torque setting value is E2 position which is good fuel efficiency, upon detection of a full operation of either one or both of the travelling operation member and the boom operation member, controlling to automatically switch to E1 position of a maximum absorption torque larger than that of E2 position is performed.

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Номер записи: 11
21-11-2013 дата публикации

Fluid cooling apparatus

Номер: US20130306264A1
Автор: Davide Rini, Guiseppe Zeolla
Принадлежит: Hydac AG

A fluid cooling apparatus with a heat exchanger device ( 3 ), which cools heated fluid under the action of a cooling air stream passed through it is characterized in that an air filter arrangement ( 21, 43 ) is provided upstream of the heat exchanger device ( 3 ) in the flow path of the cooling air stream.

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Номер записи: 12
05-12-2013 дата публикации

Compressed Air Maintenance Unit and Consumer Control Device Equipped with the Same

Номер: US20130323088A1
Автор: Michael Streck, Ralf Medow, Rolf Hartnagel
Принадлежит: Festo SE and Co KG

A compressed air conditioning apparatus ( 2 ) and a load control device ( 1 ) equipped therewith are proposed, the compressed air conditioning apparatus ( 2 ) comprising a switch-on valve ( 14 ) with 3/3-valve functionality. By means of the switch-on valve ( 14 ), an outlet passage ( 22 ) leading to a load device (A) can, among other aspects, be optionally supplied with compressed air or disconnected from the compressed air supply. By means of a pressure sensor ( 24 ) and/or a flow sensor ( 25 ), actual pressure and/or flow data can be recorded and compared to reference data previously stored in a teaching mode. As a function of the comparison result, an electric diagnostic signal can be generated, offering, among other aspects, the opportunity for monitoring leakage from the load device (A) or excessive air consumption.

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Номер записи: 13
12-12-2013 дата публикации

Filter with a bypass mechanism for a hydraulic system

Номер: US20130327689A1
Автор: Michael Georg Figura, Volker Petermann
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A reservoir for a hydraulic system includes a housing having an inlet and an outlet. The inlet is adapted to receive an incoming fluid and is formed within an inlet tube that extends into the housing. A filter within the housing, includes a filter element, defining an inner filter chamber, and includes an inlet opening encompassing the inlet tube that extends into the housing. The inlet opening allows the incoming fluid to enter the inner filter chamber for filtration. A base wall around the inlet opening includes a guide step that guides a relative movement between the reservoir and the filter. A relative movement between the filter and the reservoir facilitates the base wall, the guide step, and the inlet tube, to co-operate and establish a bypass route for selectively allowing the incoming fluid to bypass the filter, depending upon a predetermined differential pressure between the inlet and the outlet.

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Номер записи: 14
13-02-2014 дата публикации

BREATHER OF A HYDRAULIC OR ELECTROHYDRAULIC CONTROL DEVICE

Номер: US20140041733A1
Автор: HAASER Norbert
Принадлежит: ZF FRIEDRICHSHAFEN AG

A venting device for a hydraulic control unit, designed as a diaphragm in a bore in the control unit, so that collected air can escape, via the diaphragm, to outside the housing. A membrane, which is permeable to air and oil when under pressure, closes the diaphragm bore with respect to the outside. The housing bore and the diaphragm form an inside space that can be vented, via the membrane. The inside space being delimited, during operation, by the diaphragm and an oil column which passes from the control unit into the housing bore and is continually maintained at a defined pressure at which oil, in the housing bore, either does not pass through the membrane or only a minute amount passes therethrough. The oil column remains in the housing bore so that only air, contained in the oil, is vented to the outside without any air being drawn into the control unit from outside. 115-. (canceled)16154264. A venting device for either a hydraulic or an electro-hydraulic control unit , the venting device comprising a diaphragm () which is inset in a housing bore () of a housing () of the control unit , via a diaphragm bore () so that air , which collects in the control unit , can escape to an outer space () located outside the housing () ,{'b': 2', '3', '5', '1', '7', '6', '3, 'the diaphragm bore () being closed by a membrane (), which is permeable to both air and to oil when under pressure, so that the housing bore () and the diaphragm () delimit an inside space () that can be vented to the outside space () by way of the membrane (),'}{'b': 7', '1', '8', '8', '5, 'the inside space () being continually delimited during operation, on its side opposite the diaphragm (), by an oil column (), and the oil column () passes from the control unit into the housing bore () and being maintained therein at a defined pressure (p) applied by the control unit,'}{'b': 5', '3', '3, 'the pressure being such that oil present in the housing bore () either does not pass through the membrane () or ...

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Номер записи: 15
20-02-2014 дата публикации

MICROACTUATOR USING BUBBLE GROWTH AND DESTRUCTION

Номер: US20140047823A1
Автор: Chun Won-Pyo, Kim Sung-Il, Lee Kye-Jung, Park Ki-Ho
Принадлежит: KOREA INSTITUTE OF ENERGY RESEARCH

Disclosed is a microactuator using growth and destruction of bubbles including a first chamber provided with a heating plate installed at an exterior of a bottom surface of the first chamber to generate heat, and filled with a first liquid working fluid such that bubbles are caused, by heat, to grow at an interface of a cavity on an inner surface of the first chamber to be heated, a second chamber provided with a heating plate installed at an exterior of a bottom surface of the second chamber to generate heat, and filled with a second liquid working fluid such that bubbles are caused, by heat, to grow at an interface of a cavity on an inner surface of the second chamber to be heated, a connection path to connect the first chamber and the second chamber to each other, the connection path being provided therein with a moving member adapted to isolate the first and second chambers from each other and to move when internal pressure changes according to growth and destruction of the bubbles, a first subline to connect the connection path to the second chamber such that the first working fluid moves the moving member to one side and is guided to the second chamber according to increase in the internal pressure by growth of the bubbles in the first chamber, a second subline to connect the connection path to the first chamber such that the second working fluid moves the moving member to the other side and is guided to the first chamber according to increase in internal pressure by growth of the bubbles in the second chamber, and a plurality of cooling means installed on the first subline and the second subline to destroy bubbles produced in the first and second chambers. 1. A microactuator using growth and destruction of bubbles comprising:a first chamber provided with a heating plate installed at an exterior of a bottom surface of the first chamber to generate heat, and filled with a first liquid working fluid such that bubbles are caused, by heat, to grow at an interface ...

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Номер записи: 16
27-03-2014 дата публикации

HYDRAULIC CIRCUIT FOR CONSTRUCTION EQUIPMENT

Номер: US20140083092A1
Автор: Ok Jae-Whan, Son Young-Jin
Принадлежит: VOLVO CONSTRUCTION EQUIPMENT AB

A hydraulic circuit for construction equipment is provided, which supplements hydraulic fluid of a hydraulic pump for a cooling fan and hydraulic fluid of a main hydraulic pump and uses the supplemented hydraulic fluid as a hydraulic source of a RCV in order to supply signal pressure to a control valve that controls the driving of a hydraulic actuator. The hydraulic circuit includes first to third hydraulic pumps, a first control valve installed in a flow path of the first flow path, a second control valve installed in a flow path of the second hydraulic flow path, a hydraulic motor connected to the third hydraulic pump, a cooling fan connected to the hydraulic motor, a first shuttle valve having an input portion connected to the first hydraulic pump and the third hydraulic pump, a second shuttle valve having an input portion connected to the second hydraulic pump and the third hydraulic pump, and a pilot pressure generation device installed in a pilot flow path connected to the output portions of the first and second shuttle valves and shifted to supply the hydraulic fluid having a relatively high pressure among the hydraulic fluids of the first to third hydraulic pumps to the first and second control valves as pilot signal pressure. 1. A hydraulic circuit for construction equipment comprising:first and second variable displacement hydraulic pumps and a third fixed displacement hydraulic pump connected to an engine;a first control valve installed in a flow path of the first hydraulic pump and shifted to control hydraulic fluid supplied to respective hydraulic actuators that drive working devices and a traveling device;a second control valve installed in a flow path of the second hydraulic pump and shifted to control hydraulic fluid supplied to respective hydraulic actuators that drive a swing device, a working device, and the traveling device;a hydraulic motor connected to the third hydraulic pump;a cooling fan connected to the hydraulic motor to discharge cooling ...

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Номер записи: 17
27-03-2014 дата публикации

HYDRAULIC SYSTEM DE-AERATION DEVICE

Номер: US20140083290A1
Автор: Larson Eric William
Принадлежит:

Provided is a de-aeration device that de-aerates hydraulic fluid in a hydraulic system (). The hydraulic fluid is controllably supplied to the de-aeration device () in response to one or more sensed parameters. Consequently, the de-aeration device can de-aerate fluid at strategic times during operation of the hydraulic system to prevent a decrease in system performance and prevent cavitation. 1. A hydraulic system including:a high pressure supply line for supplying high pressure hydraulic fluid to a hydraulic component;a de-aeration device that removes air from the hydraulic fluid;a control valve for controllably supplying a portion of the high pressure hydraulic fluid from the high pressure supply line to the de-aeration device; anda controller for controlling the control valve such that the high pressure hydraulic fluid from the supply line is supplied to the de-aeration device in response to one or more sensed parameters.2. A hydraulic system according to claim 1 , wherein the high pressure hydraulic fluid from the supply line is supplied to the de-aeration device in response to one or more sensed parameters indicative of non-critical periods of use of the hydraulic component.3. A hydraulic system according to or claim 1 , further including at least one sensor configured to sense the one or more sensed parameters.43. A hydraulic system according to any one of - claims 1 , further including a bleed valve claims 1 , wherein the bleed valve is configured to sense the presence of air in the de-aeration device and release the air from the de-aeration device.5. A de-aeration device including:a jet pump configured to receive fluid to be de-aerated;a suction chamber in fluidic communication with the jet pump, wherein fluid flowing through the jet pump generates a relatively low pressure in the suction chamber;a return chamber for receiving the fluid exiting the jet pump, wherein the return chamber receives a mixture of high pressure fluid flowing through the jet pump ...

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Номер записи: 18
27-03-2014 дата публикации

CONNECTION APPARATUS FOR FLUID PRESSURE DEVICES

Номер: US20140084585A1
Автор: Katsuta Koji, Wada Makoto
Принадлежит: SMC Kabushiki Kaisha

In relation to fluid pressure devices, a connection apparatus, by which a filter, a regulator and a lubricator that constitute a fluid pressure unit are mutually connected, is equipped with a base member having a hole therein, a pair of first and second fastening members mounted respectively on one side surface and another side surface of the base member, and first and second holders in which the first and second fastening members are retained. Additionally, the first and second holders engage respectively with engagement projections of the filter, the regulator and the lubricator, and first and second nuts are screw-engaged with the first and second fastening members, whereby the fluid pressure devices are connected together through the first and second holders. 1. A connection apparatus for fluid pressure devices , which is arranged between one fluid pressure device and another fluid pressure device , by which respective fluid passages of the one fluid pressure device and the other fluid pressure device are mutually communicated , by connecting the fluid pressure devices together integrally , comprising:a body having a hole therein by which the fluid passages of the one fluid pressure device and the other fluid pressure device mutually communicate;a pair of holders, which are disposed on one side surface and another side surface of the body perpendicular to an axial direction of the hole, and having retaining members that engage with projections disposed respectively on the one fluid pressure device and the other fluid pressure device; anda pair of fastening members provided on the one side surface and the other side surface of the body and which are capable of fixing the holders,wherein the fastening members include respectively a main body portion that is retained in the body, and a shaft portion projecting with respect to the main body portion, the shaft portions of the fastening members being inserted through the holders, the holders and the fastening members ...

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Номер записи: 19
02-01-2020 дата публикации

METHOD AND A SYSTEM FOR ESTIMATING THE WATER CONTENT OF BRAKE FLUID IN A BRAKE SYSTEM

Номер: US20200001851A1
Автор: PEINERT Niklas, STOOPENDAHL Madeleine
Принадлежит:

A method for estimating water content of brake fluid in a brake system including brake calipers and a brake fluid container, the brake calipers and the container each including a sensor configured to detect a water content of the brake fluid, the method including: arranging the brake system in a controlled environment; for a predetermined time period, exposing the brake system to a controlled temperature and humidity such that an increase in water content in the brake fluid is accelerated; determining the water content of the brake fluid in the brake fluid container and in each brake caliper as a function of time; and based on the determined water content as a function of time, establishing a model describing the relation between the water content of brake fluid in a brake caliper and the water content in the brake fluid in the brake fluid container. 1. A method for estimating a water content of brake fluid in a brake system comprising a plurality of brake calipers and a brake fluid container , each of the plurality of brake calipers and the brake fluid container comprising a sensor configured to detect a parameter indicative of the water content of the brake fluid , the method comprising:arranging the brake system in a controlled environment;for a predetermined time period, exposing the brake system to a controlled air temperature and air humidity for a predetermined period of time such that an increase in water content in the brake fluid is accelerated in comparison to an increase in water content during normal operating conditions of a vehicle;determining the water content of the brake fluid in the brake fluid container and in each brake caliper as a function of time during the predetermined time period; andbased on the determined water content as a function of time, establishing a model describing the relation between the water content of brake fluid in a brake caliper and the water content in the brake fluid in the brake fluid container.2. The method according ...

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Номер записи: 20
05-01-2017 дата публикации

ELECTRO HYDROSTATIC ACTUATORS

Номер: US20170002845A1
Автор: Grand Serge, LESAGE Emmanuel
Принадлежит:

An electro hydrostatic actuator comprises a hydraulic pump driven by an electric motor to supply hydraulic fluid to a hydraulic actuator. The pump comprises an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet. The pump further comprises a bypass flow path arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet. 1. An electro hydrostatic actuator comprising:an electric motor; and an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet; and', 'a bypass flow path arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet., 'a hydraulic pump driven by the electric motor, the pump configured to supply hydraulic fluid to a hydraulic actuator, the pump comprising2. An electro hydrostatic actuator according to claim 1 , wherein the bypass flow path is arranged to automatically open when the pump is not driven by the electric motor.3. An electro hydrostatic actuator according to claim 2 , wherein the pump further comprises a resilient member arranged to automatically open the bypass flow path when the pump is not driven by the electric motor.4. An electro hydrostatic actuator according to claim 1 , wherein the size of the bypass flow path is adjusted during manufacture and/or ...

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Номер записи: 21
07-01-2016 дата публикации

Pneumatic port shield

Номер: US20160003371A1
Автор: Francis P. Marocchini, Scott J. Beloncik
Принадлежит: Hamilton Sundstrand Corp

A port shield for a pneumatic actuator with a casing wall includes a sheet and a connecting member. The sheet includes an outer face disposed opposite an inner face, a first end disposed opposite a second end, and a first edge disposed opposite a second edge. The sheet also includes a bend formed in the sheet between the first edge and the second edge, wherein the bend extends from the first end to the second end and forms an apex on the outer face of the sheet. The connecting member extends from the sheet and is configured to connect the sheet to an outer side of the casing wall of the pneumatic actuator.

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Номер записи: 22
03-01-2019 дата публикации

HYDRAULIC SWITCHING ASSEMBLY FOR A MOTOR VEHICLE

Номер: US20190003587A1
Автор: Christgen Wolfgang, Schafer Max, Schmidt Volker
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A hydraulic switching assembly for a motor vehicle, having a hydraulic pump () which guides a hydraulic medium from a reservoir () via hydraulic lines () and at least one magnetic valve assembly () including a magnetically actuatable switching valve (), to a switching element () in order to hydraulically actuate the switching element () between two switching positions. A pressure accumulator () and a first check valve () are mounted in a supply line () upstream of the switching valve () in order to realize a reliable temporary supply of oil pressure to the switching element (). 1. A hydraulic switching assembly for a motor vehicle , the hydraulic switching assembly comprising:a hydraulic pump that is adapted to feed a hydraulic medium from a sump via hydraulic lines;a magnetic valve assembly with a magnetically actuatable switching valve by which the hydraulic medium is adapted to be fed via the hydraulic lines to a switching element in order to hydraulically actuate the switching element between two switching positions; and,a pressure accumulator and a first check valve arranged in a feed line upstream of the switching valve that are adapted to provide a, temporary supply of oil pressure to the switching element.2. The switching assembly according to claim 1 , wherein the pressure accumulator and the first check valve are integrated in the magnetic valve assembly.3. The switching assembly according to claim 1 , wherein the pressure accumulator is constructed as a membrane accumulator claim 1 , gas accumulator claim 1 , or piston accumulator.4. The switching assembly according to claim 1 , further comprising a throttle valve arranged in a bypass line upstream of the first check valve that allows a flushing of the hydraulic lines via a run-back line of the switching valve that leads to the sump.5. The switching assembly according to claim 4 , further comprising a second check valve arranged in the bypass line downstream of the throttle valve.6. The switching assembly ...

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Номер записи: 23
20-01-2022 дата публикации

End plate, filter element, filter system and method for filtering liquid

Номер: US20220016549A1
Автор: Roland Kramer, Valentin Pichlmaier
Принадлежит: Argo Hytos Group AG

The invention relates to an end plate for filter material (10) for filtering a liquid, particularly a hydraulic oil, having a through opening (11) for filtered liquid, which is surrounded by a sealing ring (20) for a connecting piece, and a cover (12) for the filter material (10). The invention is characterized in that the sealing ring (20) delimits a free space (13) for accommodating an anti-rotation lock (14) of a switch (15) and/or a bypass valve (16) of a filter system (30). Furthermore, the invention relates to a filter element, a filter system and a method for filtering liquid.

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Номер записи: 24
12-01-2017 дата публикации

SCREEN FOR HYDRAULIC VALVE AND HYDRAULIC VALVE

Номер: US20170009786A1
Автор: Bierkoch Michael, Jacob Thomas, Peiler Juergen
Принадлежит:

The invention relates to a screen for a hydraulic valve including a band plate with screen openings wherein the screen openings form etched functional contours. The invention also relates to a hydraulic valve with the screen. 1. A screen for a hydraulic valve , the screen comprising a band plate with screen openings , wherein the screen openings are provided as etched functional contours.2. The screen according to claim 1 , wherein the screen openings are formed by one sided or two sided etching of the band plate.3. The screen according to claim 2 , wherein the screen openings are configured as apertures.4. The screen according to claim 3 ,wherein the screen openings are configured circular segment shaped on one side or on two sides, andwherein smallest diameters of the screen openings form aperture diameters.5. The screen according to claim 4 , wherein the screen openings are configured circular segment shaped on two sides and axial positions of the apertures are variable.6. The screen according to claim 4 , wherein the screen openings are configured as a contaminant barrier. The screen according to claim 4 , wherein the screen openings are configured on both sides as spherical segments and center axes of the spherical segments are provided offset from each other.8. The screen according to claim 1 , wherein the band plate is configured as a band screen.9. The screen according to claim 1 , wherein the band plate is arranged in a carrier frame.10. A hydraulic valve claim 1 , comprising:a hydraulic piston that is supported axially moveable in a valve bushing and that facilitates connecting at least one operating connection with a supply connection or a tank drain,wherein at least one of the operating connection and the supply connection is protected by a screen,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the screen is a screen according to .'} This application claims priority from and incorporates by reference German Patent Application DE10 2015 111 221 ...

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Номер записи: 25
09-01-2020 дата публикации

VORTEX RESERVOIR

Номер: US20200009477A1
Автор: Amato Eric
Принадлежит:

A vortex reservoir for separation of an aerated portion of a hydraulic fluid includes an upper chamber and a lower chamber, in fluid communication with the upper chamber, having a lower chamber sidewall. The lower chamber includes a lower lower chamber and an upper lower chamber. The lower chamber includes a lower chamber partitioning plate. The lower chamber partitioning plate is located between the lower lower chamber and the upper lower chamber. The lower lower chamber is in fluid communication with the upper lower chamber via a gap between the lower chamber partitioning plate and the lower chamber sidewall. 1. A vortex reservoir for separation of an aerated portion of a hydraulic fluid , comprising:an upper chamber; anda lower chamber, in fluid communication with said upper chamber, having a lower chamber sidewall;said lower chamber including a lower lower chamber and an upper lower chamber;said lower chamber including a lower chamber partitioning plate;said lower chamber partitioning plate being located between said lower lower chamber and said upper lower chamber;said lower lower chamber being in fluid communication with said upper lower chamber via a gap between said lower chamber partitioning plate and said lower chamber sidewall.2. The vortex reservoir as claimed in claim 1 , wherein said gap is continuous between said lower chamber partitioning plate and said lower chamber sidewall such that said lower chamber partitioning plate does not contact said lower chamber sidewall.3. The vortex reservoir as claimed in claim 1 , wherein said gap is non-continuous between said lower chamber partitioning plate and said lower chamber sidewall such that only a portion of said lower chamber partitioning plate contacts a portion of said lower chamber sidewall.4. The vortex reservoir as claimed in claim 1 , wherein said lower lower chamber includes an outlet.5. The vortex reservoir as claimed in claim 1 , wherein said upper lower chamber includes an inlet.6. The vortex ...

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Номер записи: 26
14-01-2016 дата публикации

HYDRAULIC DEVICE AND PRIME MOVER DEVICE

Номер: US20160010669A1
Автор: HASHIMOTO Tetsuya, OKUDA Yasuhiko
Принадлежит: Mitsubishi Hitachi Power Systems, Ltd.

An object of the present invention is to prevent breakage of a unidirectional filter part for high-pressure oil. A hydraulic device supplies oil to a high-pressure oil channel L and a low-pressure oil channel L from an oil tank via a supply pump The hydraulic device includes an accumulator capable of accumulating a hydraulic pressure of the oil supplied to the high-pressure oil channel from the supply pump; a filter part disposed between the supply pump and a connection point N at which the high-pressure oil channel connects to the accumulator, along a direction in which the oil is supplied; and a check valve capable of preventing a backflow of the oil to the filter part, and disposed between the filter part and the connection point. 1. A hydraulic device configured to supply oil to a high-pressure oil channel and a low-pressure oil channel from an oil tank via a supply pump which supplies the oil to both of the high-pressure oil channel and the low-pressure oil channel , the hydraulic device comprisingan accumulator capable of accumulating a hydraulic pressure of the oil supplied to the high-pressure oil channel from the supply pump, a filter part disposed between the supply pump and a connection point at which the high-pressure oil channel connects to the accumulator, along a direction in which the oil is supplied; and', 'a check valve which prevents breakage of the filter part, the check valve being disposed between the filter part and the connection point, and, 'wherein the high-pressure oil channel includes a check valve capable of preventing a backflow of the oil supplied to the low-pressure oil channel; and', 'a hydraulic-pressure adjustment valve disposed at a downstream side of the check valve and configured to adjust the hydraulic pressure of the oil., 'wherein the low-pressure oil channel includes2. The hydraulic device according to claim 1 , an introduction part for introducing the oil supplied from the supply pump;', 'a filter element having a mesh ...

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Номер записи: 27
11-01-2018 дата публикации

Valve with a Control Space Vented via a Sealing Groove

Номер: US20180010700A1
Автор: Knoell Burkhard
Принадлежит:

A valve includes a basic body, control spool, sealing ring, and control cover. The control spool is received in the basic body to be movable along a longitudinal axis. The basic body includes a counter-sealing surface, connecting channel, and tank channel having at least one first annular groove surrounding the control spool. The control cover and at least one end face of the control spool facing toward the longitudinal axis delimits, at least in part, a control space. The control cover includes a sealing surface that abuts the counter-sealing surface of the basic body. At least one of the sealing surface and the counter-sealing surface includes a sealing groove that surrounds the control space in ring-like fashion. The sealing ring is received in the sealing groove. The connecting channel opens out into the tank channel and into the sealing groove. 1. A valve , comprising: a counter-sealing surface;', 'a tank channel; and', 'a connecting channel that opens out into the tank channel;, 'a basic body includinga control spool received in the basic body so as to be movable in a direction of a longitudinal axis, and including at least one end face facing in the direction of the longitudinal axis; the control cover including a sealing surface in abutment with the counter-sealing surface of the basic body; and', 'at least one of the sealing surface of the control cover and the counter-sealing surface of the basic body including a sealing groove surrounding the control space in ring-like fashion; and, 'a control cover that, together with the at least one end face of the control spool, at least partially delimits a control space;'}a sealing ring received in the sealing groove, wherein the connecting channel further opens out into the sealing groove.2. The valve of claim 1 , wherein the connecting channel opens out into the sealing groove radially inside of the sealing ring.3. The valve of claim 1 , wherein the connecting channel has a circular cylindrical shape.4. The valve ...

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Номер записи: 28
11-01-2018 дата публикации

ACTUATOR

Номер: US20180010709A1
Автор: Yoshida Tatsuya
Принадлежит:

An actuator includes a guide that extends in one direction and a slider that is movable in an axial direction with respect to the guide. Either the guide or the slider has a recessed cross-section, and the slider is guided by the guide while the other of the guide and the slider is restrained by three surfaces constituting the recessed cross-section. 1. An actuator comprising:a guide that extends in one direction; anda slider that is movable in an axial direction with respect to the guide,wherein at least one surface of the guide is open, andwherein the slider has an air pad that ejects compression gas, and an air servo chamber for driving the slider, and is configured so as to be floated with respect to the guide and guided by the guide.2. The actuator according to claim 1 ,wherein the guide has a recessed cross-section, and the slider is configured to be floated with respect to the guide and guided by the guide while being restrained by three surfaces that constitute the recessed cross-section.3. The actuator according to claim 1 ,wherein the guide has a polygonal cross-section, and the slider is configured to be floated with respect to the guide and guided by the guide while being restrained by one surface of a plurality of surfaces that constitute the polygonal cross-section.4. The actuator according to claim 1 ,wherein a magnet preloading mechanism that applies a downward force resulting from magnetism to the slider is provided between the slider and the guide.5. An actuator comprising:a guide that extends in one direction; anda slider that is movable in an axial direction with respect to the guide,wherein at least one surface of the guide is open,wherein the slider has an air pad that ejects compression gas, and an exhaust groove that discharges the compressed air ejected from the air pad, and is configured so as to be floated with respect to the guide and guided by the guide, andwherein the exhaust groove includes a portion that extends in the axial direction ...

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Номер записи: 29
15-01-2015 дата публикации

SEPARATE HYDRAULIC UNIT WITH COOLING OF OIL

Номер: US20150013321A1
Автор: Danielsson Torkel, Karlsson Magnus
Принадлежит: CONSTRUCTION TOOLS PC AB

A separate hydraulic power pack for providing at least one user with an oil flow. The hydraulic unit includes a motor, a hydraulic pump driven by the motor, a tank, an oil inlet, an oil outlet, a heat exchanger, and a first conduit system for oil. The first conduit system connects at least the oil inlet, the heat exchanger, the oil tank, the hydraulic pump and the oil outlet. The heat exchanger is provided for liquid cooling of the oil. A cooling liquid inlet for connection to a cooling liquid source, a first cooling liquid outlet and a second conduit system for a cooling liquid. 122. A separate hydraulic unit () for supplying at least one user in the form of a hydraulic drilling machine or a hydraulic striking breaking machine with an oil flow , which separate hydraulic unit () comprises:{'b': '14', 'a motor (),'}{'b': 40', '14, 'a hydraulic pump () driven by the motor (),'}{'b': '16', 'an oil tank (),'}{'b': '20', 'an oil inlet (),'}{'b': '22', 'an oil outlet (),'}{'b': '18', 'a heat exchanger (), and'}{'b': 38', '38', '20', '18', '16', '40, 'a first conduit system () for oil, which first conduit system () connects at least the oil inlet (), the heat exchanger (), the oil tank (), the hydraulic pump (), and the oil outlet,'}{'b': 18', '2', '24', '26', '58', '58', '24', '26', '18, 'characterized in that the heat exchanger () is arranged for liquid cooling of oil, wherein the separate hydraulic unit () comprises a cooling liquid inlet () for connection to a cooling liquid source, a first cooling liquid outlet (), and a second conduit system () for cooling liquid, which second conduit system () connects at least the cooling liquid inlet (), the first cooling liquid outlet (), and the heat exchanger ().'}22183858. The separate hydraulic unit () according to claim 1 , wherein the heat exchanger () comprises a first conduit section and a second conduit section arranged in thermal contact with each other claim 1 , and wherein the first conduit section is connected to the ...

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Номер записи: 30
03-02-2022 дата публикации

WASTE HEAT SCAVENGING METHOD AND SYSTEM FOR A WORK MACHINE

Номер: US20220032733A1
Автор: MILANOWSKI CELESTA K., SPANGLER BRIAN D.
Принадлежит:

A work machine including a prime mover, an electric motor, an electric motor fluid circuit, a transmission fluid circuit, a hydraulic circuit, a cooling circuit, a pump, and a controller. The electric motor may supply a portion of power of the prime mover. The electric motor fluid circuit may be adapted to remove waste heat from the electric motor. The transmission fluid circuit may be adapted to lubricate a moving part of a transmission powered by the prime mover. The hydraulic circuit may be adapted to transmit power from the prime mover to a moving component of the work machine. The cooling circuit may be absorbing waste heat from one or more of the electric motor fluid circuit, the transmission fluid circuit, and the hydraulic circuit. The control may be adapted to control diversion of a portion of waste heat from the cooling circuit to a portion of the cab. 1. A work machine comprising:a prime mover, an electric motor supplying at least a portion of power of the prime mover;an electric motor fluid circuit adapted to remove waste heat from the electric motor;a transmission fluid circuit adapted to lubricate a moving part of a transmission powered by the prime mover, the transmission fluid circuit having waste heat;a hydraulic circuit adapted to transmit power from the prime mover to a moving component of the work machine, the hydraulic circuit having waste heat;a cooling circuit circulating a cooling medium, the cooling circuit absorbing the waste heat from one or more of the electric motor fluid circuit, the transmission fluid circuit, and the hydraulic circuit; anda controller adapted to control diversion of at least a portion of the waste heat from the cooling circuit to at least a portion of a cab of the work machine.2. The work machine of claim 1 , further comprising:a heat exchanger, the heat exchanger including a heat exchanger bypass valve wherein the heat exchanger bypass valve restricts a portion of waste heat transfer from one or more of the electric ...

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Номер записи: 31
21-01-2016 дата публикации

FILTER DEVICE

Номер: US20160017900A1
Автор: Wilkendorf Werner
Принадлежит:

A filter device, comprising at least one first connection (A) to a hydraulic working Circuit, with which a filter element (F) is associated, and comprising at least one additional connection (A), by means of which leakage oil amounts of hydraulic components can be fed, is characterised in that a control apparatus (V) is provided, by means of which the leakage oil amounts can be fed from the additional connection (A) to the filter element (F) when a specified working pressure of the working Circuit is not reached at the first connection (A).

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Номер записи: 32
17-01-2019 дата публикации

Electro hydrostatic actuator

Номер: US20190017501A1
Автор: Emmanuel Lesage, Jean-Michel Perrochat
Принадлежит: GOODRICH ACTUATION SYSTEMS SAS

An electro hydrostatic actuator comprising a hydraulic pump driven by an electric motor to supply hydraulic fluid to a hydraulic actuator, the pump comprising an inlet and an outlet for the hydraulic fluid and an active flow path configured therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet. The pump further comprises a bypass flow path configured to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet. The hydraulic pump is a rotary piston pump comprising a pump barrel driven to rotate by a motor shaft.

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Номер записи: 33
26-01-2017 дата публикации

Loop-flushing-system for hydrostatic apparatus

Номер: US20170023032A1
Автор: Arne Streblau
Принадлежит: Danfoss Power Solutions GmbH and Co oHG

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.

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Номер записи: 34
28-01-2021 дата публикации

Working machine

Номер: US20210023950A1
Автор: Alex Kay, Matthew James Clowes, Neil Beloe
Принадлежит: JC Bamford Excavators Ltd

A working machine comprising a hydraulic fluid circuit an operator structure and a thermal management system. The thermal management system connects an operator structure heater and a heat exchanger arranged to selectively remove heat energy from the hydraulic fluid circuit, so as to be capable transferring heat from the hydraulic fluid to the operator structure.

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Номер записи: 35
28-01-2021 дата публикации

Valve configuration for front end loaders

Номер: US20210025129A1
Автор: Aaron R. Kenkel, Doug M. Lehmann, Grant R. Henn, Scott R. Stahle
Принадлежит: Deere and Co

An actuator is connected to a frame and a boom arm to pivot the boom arm with respect to the frame. A spool valve directs fluid from a pump into a selected side of the actuator. A first anti-cavitation valve is fluidly positioned between the first end of the actuator and the reservoir to permit fluid flow from the reservoir to the first end of the actuator while the first anti-cavitation valve is open and inhibit fluid flow from the first end of the actuator to the reservoir. A second anti-cavitation valve is fluidly positioned between the second end of the actuator and the reservoir to permit fluid flow from the reservoir to the second end of the actuator while the second anti-cavitation valve is open and inhibit fluid flow from the second end of the actuator to the reservoir.

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Номер записи: 36
28-01-2021 дата публикации

ELECTRICITY GENERATION SYSTEM

Номер: US20210025413A1
Автор: Wang Shih-Jung
Принадлежит:

An electricity generation system includes a pneumatic generator, an air compressor, a battery module, a control module, a gas ejection module, an output circuit, a loopback circuit, and a switch. The control module controls the battery module to supply power to the air compressor, so that the air compressor is activated to generate and store compressed air in the gas cylinder. The control module controls the gas ejection module to allow the compressed air stored in the gas cylinder to enter the pneumatic generator so that the pneumatic generator generates electrical energy. The output circuit is connected to the pneumatic generator and the device to be powered. The loopback circuit connects the pneumatic generator and the battery module. The electrical energy generated by the pneumatic generator supplies the power supply device or is stored in the battery module when the switch is turned on by the control module. 1. An electricity generation system , comprising:a pneumatic generator;an air compressor being connected to a gas cylinder, wherein the air compressor is configured to be supplied with electricity to generate compressed air to be stored in the gas cylinder;a battery module connected to the air compressor, wherein the battery module is capable of supplying the electricity to the air compressor to operate the air compressor to generate the compressed air;a control module connected to the battery module and the air compressor, wherein the control module is capable of controlling the battery module to supply the electricity to the air compressor so that the air compressor is operated to generate the compressed air to be stored in the gas cylinder;a gas ejection module connected to the gas cylinder and the pneumatic generator, wherein the control module is capable of controlling the gas ejection module to operate so that the compressed air stored in the gas cylinder enters the pneumatic generator to operate the pneumatic generator to generate electrical energy; ...

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Номер записи: 37
02-02-2017 дата публикации

FILTER FOR HYDRAULIC FLUIDS FOR HYDRAULIC CIRCUITS AND PROCESS OF MAKING THE SAME

Номер: US20170030384A1
Автор: Pastori Claudio
Принадлежит:

A filter for hydraulic fluids including a container defining inside a housing compartment fluidically communicating with an inlet and an outlet associated with and a filtering cartridge, and partitioning the compartment in first and second chambers. The cartridge is configured and positioned for determining the filtering of the hydraulic fluid from the inlet which flows from the first to the second chambers. The container exhibits an engagement portion projecting inside the housing compartment and defining a collar having an outer coupling lateral surface, while the filtering cartridge exhibits a respective engagement portion defining a respective collar exhibiting an inner coupling lateral surface configured for engaging outside the outer coupling surface of the container. The coupling surface of the engagement portion of the container exhibits a polygonal cross-section; the inner coupling surface of the engagement portion of the cartridge is at least partially countershaped to the coupling surface of the container. 2. The filter according to the claim 1 , wherein the inner coupling surface of the filtering cartridge is countershaped to the outer coupling surface of the container.5. The filter according to claim 1 , comprising at least one seal interposed between the engagement portions of the container and the filtering cartridge claim 1 , respectively claim 1 , the seal comprising a closed perimetral element configured for defining the fluid tightness between the engagement portions of the container and the filtering cartridge claim 1 , respectively claim 1 , wherein the seal is stably supported by the collar of the filtering cartridge and is interposed between the outer and inner coupling surfaces of the container and the filtering cartridge claim 1 , respectively.6. The filter according to claim 5 , wherein the collar of the cartridge comprises an inner lateral wall delimiting inside said collar claim 5 , at least part of the inner lateral wall of the collar of ...

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Номер записи: 38
01-02-2018 дата публикации

BLEED VALVE ARRANGEMENTS; AND METHODS

Номер: US20180031008A1
Автор: BASURTEKAR Shrikant Chandrakant
Принадлежит: EATON CORPORATION

Aspects and techniques of the present disclosure relate to a bleed valve system for bleeding fluid of a first, lower, specific gravity from a fluid of a second, higher, specific gravity, in a fluid system. The techniques can be used to provide a bleed valve system, for a pressurized fluid system, that is not sensitive to rotational orientation around a mounting axis. 2. The bleed valve system of claim 1 , wherein the fluid conduit arrangement is also configured so that fluid can enter the bleed chamber at a location below the selected fluid detection level at all times during a 360° rotation of the housing around the mounting axis.3. The bleed valve system of claim 1 , wherein the bleed valve system is configured to bleed air from a liquid system; and claim 1 , the fluid bleed conduit is an air bleed conduit.4. The bleed valve system of claim 1 , wherein the fluid bleed conduit has a conical shaped sidewall.5. The bleed valve system of claim 1 , wherein the fluid bleed conduit has a sidewall of conical shape with an internal conical angle of at least 5°.6. The bleed valve system of claim 1 , wherein the internal conical angle is within a range of 10° to 20°.7. The bleed valve system of claim 1 , wherein the bleed chamber has a cross-dimension of at least 4.0 times a first cross-dimension of the fluid bleed conduit.8. The bleed valve system of claim 1 , wherein the fluid bleed conduit is adjacent to the bleed chamber and centrally aligned thereto.9. The bleed valve system of claim 1 , wherein the fluid bleed conduit is centered on the mounting axis.10. The bleed valve system of claim 1 , wherein the reservoir chamber and the bleed chamber are centered on the mounting axis.11. The bleed valve system of claim 1 , further comprising a fluid vent valve having a valve seat that is mounted in flow communication with the fluid bleed conduit claim 1 , the fluid vent valve being configured to open in response to an activation signal to bleed excess fluid from the bleed ...

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Номер записи: 39
31-01-2019 дата публикации

PNEUMATIC CIRCUIT FOR PASSENGER CAR PNEUMATIC SUSPENSION SYSTEM

Номер: US20190030976A1
Автор: Bodet Marc-Michel, Meissner Frank
Принадлежит:

A compressed air supply installation for the operation of a pneumatic system includes a compressed air feed, a compressed air connection to a pneumatic unit, a venting connection, a main pneumatic line disposed between the compressed air feed and the compressed air connection, and a first venting line disposed between the compressed air connection and the venting connection, the first venting line including a venting valve including a first venting valve connection, a second venting valve connection, and a control connection pneumatically connected to a control valve by a pneumatic control relay line. The venting valve is closed between the first venting valve connection and the second venting valve connection to the venting connection in a first switching state of the venting valve and is opened between the first venting valve connection and the second venting valve connection to the venting connection in a second switching state. 1. A compressed air supply installation for the operation of a pneumatic system , the compressed air supply installation comprising:a compressed air feed;a compressed air connection to a pneumatic unit;a venting connection;a main pneumatic line disposed between the compressed air feed and the compressed air connection; anda first venting line disposed between the compressed air connection and the venting connection, the first venting line including a venting valve comprising a first venting valve connection, a second venting valve connection, and a control connection pneumatically connected to a control valve by a pneumatic control relay line,wherein the venting valve is closed between the first venting valve connection and the second venting valve connection to the venting connection in a first switching state of the venting valve and is opened between the first venting valve connection and the second venting valve connection to the venting connection in a second switching state of the venting valve,wherein the control valve is closed ...

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Номер записи: 40
17-02-2022 дата публикации

MULTI-FUNCTION ORIFICE SUBASSEMBLY FOR FLOW LIMITERS

Номер: US20220049722A1
Автор: Gudimetla Chandra Sudhakar
Принадлежит: The Boeing Company

A flow limiter component including a monocoque body having first, second, and third sections along a longitudinal axis. The first section includes a first end defining a first edge of the monocoque body and a bordering second end, and a first inner diameter defining a first chamber inside the first section. The second section includes a solid wall, with an orifice disposed therein, in fluid communication with the first chamber, the orifice defined by a second inner diameter. The third section includes a third end bordering the second section and a fourth end defining a second edge of the body, and a third inner diameter, the third inner diameter defining a second chamber in the third section. The second chamber is in fluid communication with the orifice. The first inner diameter is greater than the third inner diameter, and the third inner diameter is greater than the second inner diameter. 1. A flow limiter component comprising:a monocoque body having a first section, a second section, and a third section arranged along a longitudinal axis of the monocoque body; a first end defining a first edge of the monocoque body and a second end bordering the second section; and', 'a first inner diameter relative to the longitudinal axis, the first inner diameter defining a first chamber inside the first section;, 'the first section comprising a solid wall;', 'wherein an orifice is disposed in the solid wall, in fluid communication with the first chamber, and', 'wherein the orifice is defined by a second inner diameter relative to the longitudinal axis;, 'the second section comprising a third end bordering the second section and a fourth end defining a second edge of the monocoque body;', 'a third inner diameter relative to the longitudinal axis, the third inner diameter defining a second chamber in the third section,', 'wherein the second chamber is in fluid communication with the orifice, and', 'wherein the first inner diameter is greater than the third inner diameter, and ...

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Номер записи: 41
17-02-2022 дата публикации

Working machine

Номер: US20220049729A1
Автор: Daiki Abe, Hiroaki Nakagawa, Ryota Hamamoto, Yuji Fukuda
Принадлежит: Kubota Corp

A working machine includes a prime mover, a hydraulic pump driven by power of the prime mover, a cooler including a cooling fan rotated by either the power of the prime mover or hydraulic fluid delivered from the hydraulic pump, and a controller configured or programmed to perform a reduction control for reducing a target fan rotation speed that is a target rotation speed of the cooling fan in response to reduction of an actual prime mover rotation speed that is an actual rotation speed of the prime mover, and to perform, after the reduction control, a restoration control for restoring the target fan rotation speed. The controller is configured or programmed to make a difference between a reduction rate of the target fan rotation speed in the reduction control and an increase rate of the target fan rotation speed in the restoration control.

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Номер записи: 42
04-02-2021 дата публикации

ADAPTOR PLUG FOR A SPIN-ON FILTER

Номер: US20210031127A1
Автор: BUSCICCHIO Luca, Trinchieri Piergiorgio
Принадлежит:

An adaptor plug for a spin-on fluid filter, in particular for a spin-on return filter, wherein the adaptor plug comprises a plug-in end which is designed to be plugged into a cavity in a flange of a hydraulic device in a fluid tight manner and a filter end which is designed to be connected to the spin-on filter in a fluid tight, detachable manner and at least one internal fluid channel connecting said plug-in end with said filter end, wherein the adaptor plug at its filter end comprises a threaded tube or bolt on which the spin-on filter can be screwed. By this design, the use of a filter set with or without an adaptor ring between the adaptor plug and the filter is enabled. By the adaptor plug, the spin-on filter can be applied to a variety of hydraulic devices, among others, with a ¾ 16 UNF cavity. 1. An adaptor plug for a spin-on fluid filter , in particular for a spin-on return filter , wherein the adaptor plug comprisesa plug-in end which is designed to be plugged into a cavity in a flange of a hydraulic device in a fluid tight manner,a filter end which is designed to be connected to the spin-on filter in a fluid tight, detachable manner, andat least one internal fluid channel connecting said plug-in end with said filter end, wherein the adaptor plug at its filter end comprises a threaded tube or bolt on which the spin-on filter can be screwed.2. The adaptor plug according to claim 1 , wherein the threaded tube or bolt comprises at least a first internal fluid channel of the adaptor plug claim 1 , wherein the first internal fluid channel ends at the free end of the threaded tube or bolt.3. The adaptor plug according to claim 1 , having a filter flange from which the threaded tube or bolt extends claim 1 , wherein the filter flange has a larger diameter than the threaded tube or bolt and wherein the filter flange provides a ring-shaped sealing area surrounding the threaded tube or bolt.4. The adaptor plug according to claim 1 , having at least a second internal ...

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Номер записи: 43
31-01-2019 дата публикации

Manufacture of remote control stations for use to operate actuators on a valve assembly

Номер: US20190032810A1
Автор: Abdul Raoof Mohamed, Jayesh K. Shah, Jeffrey Louis Johanning, Kyle McKinley Bryan, Mark David Kaczmarek
Принадлежит: Dresser LLC

A control assembly that is configured to operate large, heavy duty flow controls. The control assembly may include a main support and a thin plate disposed on the main support, the thin plate having four sides forming a mounting surface, the thin plate also having lateral slots that extend lengthwise in a first direction between two of the sides and are arranged so adjacent lateral slots are spaced apart from one another in a second direction perpendicular to the first direction.

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Номер записи: 44
30-01-2020 дата публикации

HYDRAULIC OIL TEMPERATURE MANAGEMENT

Номер: US20200032821A1
Автор: Kisse Brandon, Young Charles
Принадлежит:

Disclosed embodiments include power machines, and hydraulic systems for power machines, in which a machine controller is configured to detect high temperature conditions of the hydraulic oil and to responsively control or reduce the overall torque available from the engine to reduce heat generation in the hydraulic system. 1. A power machine comprising:an engine configured to provide a variable output torque; a power conversion system including a first hydraulic pump coupled to and driven by the engine to provide pressurized hydraulic oil at one or more outlets;', 'a drive system coupled to and configured to receive pressurized hydraulic oil from the power conversion system;', 'an implement system coupled to and configured to receive pressurized hydraulic oil from the power conversion system;', 'a first temperature sensor positioned and configured to measure a first temperature of hydraulic oil in the drive system and to provide a first temperature signal indicative of the measured first temperature of the hydraulic oil in the drive system; and', 'a second temperature sensor positioned and configured to measure a second temperature of hydraulic oil and to provide a second temperature signal indicative of the measured second temperature and an effect that the implement system has on the hydraulic oil; and, 'a hydraulic system, powered by the engine and includinga machine controller coupled to the first and second temperature sensors to receive the first temperature signal and the second temperature signal, the machine controller configured to control the variable output torque of the engine based upon the first and second temperature signals to allow different engine torques for hydraulic oil temperatures in different ranges.2. The power machine of claim 1 , and further comprising an engine controller coupled to the machine controller and to the engine claim 1 , the machine controller configured to provide a signal to the engine controller to control the variable ...

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Номер записи: 45
09-02-2017 дата публикации

Aircraft Hydraulic Thermal Management System

Номер: US20170037883A1
Автор: Liao Jianmin
Принадлежит: The Boeing Company

An aircraft hydraulic thermal management system utilizes fuel to cool hydraulic fluid by means of a heat exchanger. A hydraulic pump includes a case drain flow of hydraulic fluid at a first temperature to drive a hydraulic motor; the hydraulic motor circulates hydraulic fluid to a reservoir at a second temperature. The heat exchanger is positioned remotely of the fuel tank, and has first and second channels positioned in thermal communication to transfer heat from the hydraulic fluid to the fuel. The hydraulic motor is mechanically coupled to the fuel pump; the hydraulic motor, driven by case drain flow through the first channel, thus operates the fuel pump to move fuel through the second channel. The thermal management system is configured to assure that a) the hydraulic pump circulates hydraulic fluid to the reservoir at the second temperature, and b) the second temperature is always lower than the first temperature. 1. An aircraft hydraulic thermal management system , comprising:a hydraulic system including a hydraulic reservoir and a hydraulic pump, the hydraulic pump having a case drain flow of hydraulic fluid at a first temperature, the hydraulic system further including a return of the hydraulic fluid to the reservoir at a second temperature;a fuel system including a fuel tank and a fuel pump, the fuel pump configured to circulate fuel from the fuel tank and back to the fuel tank;a heat exchanger having first and second channels configured to receive the hydraulic fluid and the fuel, respectively, and to transfer heat from the hydraulic fluid to the fuel, the heat exchanger being positioned remotely of the fuel tank; andwherein the thermal management system is configured to assure that a) the hydraulic pump circulates the hydraulic fluid to the reservoir at the second temperature, and b) the second temperature is always lower than the first temperature.2. The aircraft hydraulic thermal management system of claim 1 , wherein the hydraulic system further ...

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Номер записи: 46
08-02-2018 дата публикации

Construction Machine Provided with Preheating Unit and Preheating Method of Construction Machine

Номер: US20180038074A1
Автор: Nishihata Jun
Принадлежит:

To provide a construction machine including a novel preheating unit that can efficiently preheat entire circulation channel where fluid flows, and a preheating method of the construction machine. A bypass channel is arranged in a circulation channel through which the fluid is circulated, this bypass channel is provided with the preheating unit that is formed of a heater and a bypass pump. According to such configuration, even in a state circulation of the fluid may stop in the circulation channel, the fluid can be heated while the fluid is circulated through the bypass channel, and therefore the entire circulation channel can be efficiently preheated. Moreover, since retrofitting to the existing circulation channel is possible, sound versatility can be exerted. 1. A construction machine , comprising:a bypass channel in parallel with a circulation channel that circulates fluid; anda preheating unit that consists of a heater and a bypass pump in the middle of bypass channel.2. The construction machine according to claim 1 , 'the bypass pump of the preheating unit circulates the fluid in the direction same to that of the pump of the circulation channel.', 'wherein the bypass channel is arranged between an upstream side and a downstream side of a circulation pump that is arranged in the circulation channel, and'}3. The construction machine according to claim 1 , 'the bypass channel is arranged in the circulation channel that is provided between the hydraulic oil tank and the main pump, and', 'wherein the circulation channel is configured to circulate a lubricating oil between a hydraulic oil tank and a main pump,'}the circulation channel and the bypass channel form a circulation loop of the hydraulic oil.4. The construction machine according to claim 1 , wherein the circulation channel is a circulation channel that circulates a transmission oil for a transmission.5. The construction machine according to claim 1 , wherein the circulation channel is a circulation channel ...

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Номер записи: 47
08-02-2018 дата публикации

STRAINER ASSEMBLY FOR A FLUID TANK

Номер: US20180038394A1
Автор: Costello Daniel
Принадлежит: CATERPILLAR SARL

A strainer assembly for a fluid tank is provided. The strainer assembly includes an access plate configured to cover an opening of the fluid tank. The access plate has an elongated cavity and a stopper structure provided on an inner surface of the elongated cavity. The strainer assembly further includes a strainer having a locking assembly for securing the strainer to the access plate such that the strainer is positioned inside the fluid tank. The locking assembly includes a head portion and a body portion having an engagement structure. The body portion is positioned inside the elongated cavity such that the head portion abuts the access plate and the engagement structure engages with the stopper structure to restrict an axial movement of the strainer. 1. A strainer assembly for a fluid tank , the strainer assembly comprising:an access plate configured to cover an opening of the fluid tank, the access plate having an elongated cavity and a stopper structure provided on an inner surface of the elongated cavity; and a head portion; and', 'a body portion having an engagement structure,, 'a strainer having a locking assembly for securing the strainer to the access plate such that the strainer is positioned inside the fluid tank, the locking assembly includingwherein the body portion is positioned inside the elongated cavity such that the head portion abuts the access plate and the engagement structure engages with the stopper structure to restrict an axial movement of the strainer.2. The strainer assembly as claimed in claim 1 , wherein the stopper structure comprising:a first stopper member; anda second stopper member angularly positioned with respect to the first stopper member to form a retainer structure to engage the engagement structure of the locking assembly.3. The strainer assembly as claimed in claim 1 , wherein the elongated cavity has a first portion and a second portion such that an inner diameter of the elongated cavity at the first portion is greater ...

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Номер записи: 48
07-02-2019 дата публикации

AIR SUPPLY SYSTEM

Номер: US20190039589A1
Автор: Becker Christian, PLATAS DEL COSO Adrian, PRÖLL Gerhard
Принадлежит: KNORR-BREMSE SYSTEME FÜR SCHIENENFAHRZEUGE GMBH

An air supply system to be mounted in or on a railway vehicle or commercial vehicle comprises a compressor device for producing compressed air, an air dryer device for dehumidifying the compressed air, and a housing for enclosing the compressor device and the air dryer device. Furthermore, a cooling is provided which can be operated independently of the operating mode of the compressor device. 1. An air supply system for a rail vehicle or commercial vehicle , the air supply system comprising having:a compressor device for generating compressed air;an air-drier device for dehumidifying the compressed air;a housing for enclosing the compressor device and the air-drier device; anda cooling device operable irrespective of the operating state of the compressor device.2. The air supply system of claim 1 , further comprising a control device for activating the cooling device claim 1 , wherein the cooling device is activated irrespective of the operating state of the compressor device.3. The air supply system of claim 1 , wherein the cooling device has a fan device for generating a cooling-air stream through the housing.4. The air supply system of claim 3 , wherein the housing has at least one cooling-air entry and at least one cooling-air exit claim 3 , and the fan device of the cooling device is arranged in or on the housing such that it can generate a cooling-air stream from the at least one cooling-air entry claim 3 , through the housing claim 3 , to the at least one cooling-air exit.5. The air supply system of claim 1 , further comprising at least one temperature sensor for sensing at least one temperature value of the air supply system claim 1 , wherein the cooling device is operable in dependence on the at least one temperature value sensed. This patent application is a U.S. National Phase of International Patent Application No. PCT/EP2017/050664, filed Jan. 13, 2017, which claims priority to German Patent Application No. 10 2016 100 705.6 filed Jan. 18, 2016, the ...

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Номер записи: 49
24-02-2022 дата публикации

METHOD FOR DETECTING OBSTRUCTIONS IN A GAS NETWORK UNDER PRESSURE OR UNDER VACUUM AND GAS NETWORK

Номер: US20220056933A1
Автор: GEUENS Philippe, LOUARROUDI Ebrahim
Принадлежит:

A method is provided for detecting and quantifying obstructions in a gas network under pressure or vacuum. The gas network may be provided with a sensor(s) capable of recording the status of a source(s), consumers, or consumer areas. The method includes: a possible start-up phase; a baseline or zero phase; and an operational phase. The operational phase includes: reading out the first group and second group of sensors; re-estimating, determining or calculating the physical model or mathematical relationship on the basis of the read measurements from the sensors; determining or calculating of the existence of an obstruction in the system based on the difference and/or its derivatives between the parameters of the physical model or mathematical relationship as determined during the baseline or zero phase and the operational phase; generating an alarm and/or generating a degree of obstruction and/or generating the corresponding obstruction if an obstruction is detected. 111.-. (canceled)12. A method for detecting and quantifying obstructions in a gas network under pressure or vacuum; the gas network comprising:one or more sources of compressed gas or vacuum;one or more consumers, consumer areas of compressed gas or vacuum applications;pipelines or a network of pipelines to transport the compressed gas or vacuum from the sources to the consumers, consumer areas or applications;a plurality of sensors which determine one or a plurality of physical parameters of the gas at different times and locations in the gas network;wherein the gas network may further be provided with one or a plurality of sensors capable of recording the state or status of one or a plurality of sources, consumers, or consumer areas and that the method comprises the following phases:a possible start-up phase during which the aforementioned sensors are to be calibrated for use;a baseline or zero phase determining an initial physical model or mathematical relationship between measurements from a first ...

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Номер записи: 50
06-02-2020 дата публикации

Vent Limiting Device for Use with Fluid Regulators

Номер: US20200040919A1
Автор: Dowdell Aaron J., Farah Hoden Ali, Graft David F., Kirchner Bret M., Sequeira Christopher
Принадлежит:

A vent limiting device adapted to be operably coupled to an exhaust vent of a fluid regulator. The vent limiting device includes a housing, a poppet disposed in the housing, and a retaining element arranged to retain the poppet in the housing. The housing has a fluid passageway extending between a fluid inlet and a fluid outlet. The poppet is movably disposed in the housing, responsive to pressure at the fluid outlet, to control fluid flow through the fluid passageway. The housing includes one or more retaining features that engage the retaining element to retain the retaining element in the housing. 1. A vent limiting device adapted to be operably coupled to an exhaust vent of a fluid regulator , the vent limiting device comprising:a housing having a fluid inlet, a fluid outlet, and a fluid passageway extending between the fluid inlet and the fluid outlet, the housing including a seat disposed along the fluid passageway;a poppet disposed in the housing and movable relative to the seat, responsive to pressure at the fluid inlet, to control fluid flow through the fluid passageway, the poppet movable between an open position, in which the poppet is spaced from the seat, thereby allowing fluid flow through the fluid passageway, and a closed position, in which the poppet sealingly engages the seat, thereby preventing fluid flow through the fluid passageway; anda retaining element arranged to retain the poppet in the housing, wherein the housing includes a plurality of projections that engage the retaining element to retain the retaining element in the housing and that define a plurality of grooves that form a portion of the fluid passageway between the housing and the retaining element.2. The vent limiting device of claim 1 , wherein the poppet is seated against the retaining element.3. The vent limiting device of claim 1 , wherein the housing is made of metal and the poppet is made of metal claim 1 , thereby creating a metal-to-metal seal when the poppet is in the ...

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Номер записи: 51
18-02-2021 дата публикации

Vent Limiting Device for Use with Fluid Regulators

Номер: US20210048048A1
Автор: Dowdell Aaron J., Farah Hoden Ali, Graft David F., Kirchner Bret M., Sequeira Christopher
Принадлежит:

A vent limiting device adapted to be operably coupled to an exhaust vent of a fluid regulator. The vent limiting device includes a housing, a poppet disposed in the housing, and a retaining element arranged to retain the poppet in the housing. The housing has a fluid passageway extending between a fluid inlet and a fluid outlet. The poppet is movably disposed in the housing, responsive to pressure at the fluid outlet, to control fluid flow through the fluid passageway. The housing includes one or more retaining features that engage the retaining element to retain the retaining element in the housing. 1. A limiting device , comprising:a housing that defines an actuator end that is configured to be inserted into an actuator, a free end that is configured to be open to atmosphere, and an internal path between the actuator end and the free end;a poppet that is moveable to control a flow along the internal path, the poppet moveable between a first position and a second position; andone or more first internal features that permit flow along the internal path around a periphery of the poppet when the poppet is in the first position.2. The limiting device of claim 1 , wherein the internal path is wholly contained within the housing.3. The limiting device of claim 1 , wherein the one or more first internal features comprise one or more grooves defined by the housing.4. The limiting device of claim 1 , further comprising a retaining element that engages the poppet to retain the poppet in the housing.5. The limiting device of claim 4 , wherein the housing includes one or more projections that engage the retaining element to retain the retaining element in the housing claim 4 , and wherein the one or more projections define one or more grooves that form the one or more first internal features claim 4 , respectively.6. The limiting device of claim 4 , wherein the retaining element comprises a retaining ring having a central opening claim 4 , and wherein the poppet covers the ...

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Номер записи: 52
15-02-2018 дата публикации

FLUID DELIVERY SYSTEMS INCLUDING HYDRAULIC DRIVE SYSTEMS

Номер: US20180045226A1
Автор: FITZSIMMONS Michael M.
Принадлежит: FITZSIMMONS HYDRAULICS, INC.

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 ...

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Номер записи: 53
03-03-2022 дата публикации

METHOD FOR ESTABLISHING HYDRAULIC READINESS, AND HYDRAULIC SYSTEM

Номер: US20220065273A1
Автор: Götz Dominik, Grethel Marco, Muller Daniel, Oser Johannes
Принадлежит:

A method is for testing a hydraulic system (), having a pump () which, in a first direction of rotation (), conveys fluid to a first consumer () for a volume flow function and, in a second direction of rotation (), conveys fluid to at least one second consumer () for an actuation function. The method includes testing hydraulic readiness of the hydraulic system (); drawing fluid into the hydraulic system (); ventilating the hydraulic system (). A hydraulic system () carries out such a method, having a pump () which can be driven in a first direction of rotation () for a volume flow function and can be driven in a second direction of rotation () for an actuation function. 1. A method for testing a hydraulic system having a pump which , in a first direction of rotation , conveys fluid to a first consumer for a volume flow function and , in a second direction of rotation , conveys fluid to at least one second consumer for an actuation function , the method comprising at least one of the following steps:testing hydraulic readiness of the hydraulic system;drawing fluid into the hydraulic system; andventilating the hydraulic system.2. The method according to claim 1 , wherein the method includes testing hydraulic readiness of the hydraulic system and the hydraulic readiness of the hydraulic system is tested by rotating the pump in the second direction of rotation.3. The method according to claim 1 , wherein the method includes drawing fluid into the hydraulic system and the fluid is drawn into the hydraulic system by rotating the pump in the first direction of rotation.4. The method according to claim 1 , wherein the method includes ventilating the hydraulic system and the hydraulic system is ventilated by turning the pump in the second direction of rotation.5. The method according to claim 4 , wherein the pump is connected to the second consumer with an interposition of at least one valve claim 4 , wherein the valve is switched into a ventilating position when ventilating ...

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Номер записи: 54
26-02-2015 дата публикации

HYDRAULIC ACTUATOR ARRANGEMENT

Номер: US20150052884A1
Автор: BRACEY Anthony
Принадлежит:

The present invention provides a hydraulic actuator arrangement comprising a hydraulic actuator , a hydraulic fluid supply line connected to the actuator for supplying hydraulic fluid to the actuator, and a bleed port for enabling air in the hydraulic actuator arrangement to be bled out, wherein the hydraulic actuator arrangement further comprises a bleed line connected to the bleed port to enable any hydraulic fluid bled through the bleed port to be conveyed along the bleed line. 2. A hydraulic actuator arrangement as claimed in claim 1 , wherein the bleed line is arranged to convey bled hydraulic fluid to a hydraulic fluid return line.3. A hydraulic actuator arrangement as claimed in claim 2 , wherein the hydraulic fluid return line is arranged to return bled hydraulic fluid to the hydraulic fluid supply line.4. A hydraulic actuator arrangement as claimed in claim 1 , wherein the bleed line comprises a bleed pipe and a valve assembly.5. A hydraulic actuator arrangement as claimed in claim 4 , wherein the valve assembly comprises a valve for controlling the flow of bled hydraulic fluid from the bleed pipe to an outlet of the valve assembly.6. A hydraulic actuator arrangement as claimed in claim 5 , wherein the bleed line is arranged to convey bled hydraulic fluid to a hydraulic fluid return line and wherein the outlet of the valve assembly comprises a return line connector portion for connecting to the hydraulic fluid return line claim 5 , the return line connector portion preferably comprising one half of a quick release connection and wherein a corresponding connector portion on the hydraulic fluid return line comprises another half of the quick release connection.7. A hydraulic actuator arrangement as claimed in claim 1 , wherein the bleed line comprises a flexible pipe claim 1 , preferably a high-pressure hose pipe.8. A hydraulic actuator arrangement as claimed in claim 1 , wherein the bleed port is located on the hydraulic fluid supply line.9. A hydraulic ...

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Номер записи: 55
14-02-2019 дата публикации

REUSABLE GAS GENERATOR DRIVEN PRESSURE SUPPLY SYSTEM

Номер: US20190048901A1
Автор: Bedrossian Nazareth, Coppedge Charles D., Hoskins Randel L.
Принадлежит:

An exemplary method includes using a pressure supply device (PSD) to actuate a hydraulic customer includes activating, when in the first position, a first gas generator of the multiple gas generators thereby driving the piston to the second position, pressurizing the hydraulic fluid, and discharging the pressurized hydraulic fluid to the customer; actuating the customer in response to receiving the pressurized hydraulic fluid; resetting the piston to first position by transferring a resetting hydraulic fluid into the reservoir; and exhausting gas and condensate from the gas chamber in response to resetting the piston to the first position. 1. A method , comprising:using a pressure supply device (PSD) to actuate a hydraulic customer, the PSD comprising a cylinder extending from a first end to a discharge end, a moveable piston disposed in the cylinder and separating a reservoir from a gas chamber, multiple gas generators in communication with the gas chamber, the hydraulic customer in communication with the reservoir, wherein in a first position the piston is located proximate to the first end and the reservoir contains hydraulic fluid, and in a second position the piston is located proximate to the discharge end, the using comprising:activating, when in the first position, a first gas generator of the multiple gas generators thereby driving the piston to the second position, pressurizing the hydraulic fluid, and discharging the pressurized hydraulic fluid to the customer;actuating the customer in response to receiving the pressurized hydraulic fluid;resetting the piston to first position by transferring a resetting hydraulic fluid into the reservoir; andexhausting gas and condensate from the gas chamber in response to resetting the piston to the first position.2. The method of claim 1 , wherein the activating is performed on a demand to actuate the customer.3. The method of claim 1 , wherein the resetting hydraulic fluid is supplied from an external hydraulic fluid ...

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Номер записи: 56
14-02-2019 дата публикации

VEHICLE AND VEHICLE AIR COMPRESSOR SYSTEM

Номер: US20190049132A1
Автор: Hagedorn Gregory, Line Johnathan Andrew
Принадлежит:

A vehicle includes a truck bed, docking plate, baseplate, latching system, air compressor, and air storage tank. The truck bed has a side panel extending upward from a floor panel. The docking plate is secured to an internal surface of the side panel. The baseplate has first and second opposing external surfaces. The latching system extends from the first surface and engages the docking plate to secure the baseplate thereto. The air compressor and the air storage tank are each secured to the second surface. 1. A vehicle comprising:a truck bed having a side panel extending upward from a floor panel;a docking plate secured to an internal surface of the side panel;a baseplate having first and second opposing external surfaces;a latching system extending from the first surface and engaging the docking plate to secure the baseplate thereto; andan air compressor and an air storage tank, each secured to the second surface.2. The vehicle of claim 1 , wherein the second surface of the baseplate defines a plurality of orifices that includes a first subset of orifices patterned to receive fasteners for mounting a plurality of air compressor models having mounting footprints of varying dimensions.3. The vehicle of claim 2 , wherein the air compressor is secured to the second surface via fasteners engaging four orifices of the first subset of orifices.4. The vehicle of claim 3 , wherein the plurality of orifices includes a second subset of orifices patterned to receive fasteners for mounting a plurality of air storage tank models having mounting footprints of varying dimensions.5. The vehicle of claim 4 , wherein the air storage tank is secured to the second surface via fasteners engaging four orifices of the second subset of orifices.6. The vehicle of claim 5 , wherein the plurality of orifices includes a third subset of orifices patterned to receive fasteners for mounting hose wrapping brackets.7. The vehicle of further comprising a pair of hose wrapping brackets claim 6 , and ...

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Номер записи: 57
13-02-2020 дата публикации

Control System For Flushing Contaminated Hydraulic Fluid

Номер: US20200049172A1
Автор: Jerry L. Brinkley, Joshua M. Guarino, Michael W. Freisleben
Принадлежит: CNH INDUSTRIAL AMERICA LLC

The present inventors have recognized that contaminants in hydraulic fluid in a hydraulic system of an off-highway implement can be efficiently filtered by a filtration system of the source of hydraulic power by conducting an operation which controls existing valves for precisely operating cylinders of the system to return the fluid to the source of hydraulic power through a connector with little or no fluid going through cylinders. Such an operation can be advantageously executed immediately following connection of the source of hydraulic power to the manifold of the implement.

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Номер записи: 58
13-02-2020 дата публикации

Valve System For Flushing Contaminated Hydraulic Fluid

Номер: US20200049173A1
Автор: Brinkley Jerry L., Freisleben Michael W., Guarino Joshua M.
Принадлежит:

The present inventors have recognized that contaminants in hydraulic fluid in a hydraulic system of an off-highway implement can be efficiently filtered by a filtration system of the source of hydraulic power by conducting an operation which controls existing valves of the system to block the fluid from going through such valves or precisely operated cylinders controlled by such valves while a dedicated return valve returns the fluid to the source of hydraulic power through a connector. Such an operation can be advantageously executed immediately following connection of the source of hydraulic power to the manifold of the implement. 1. An off-highway implement , comprising:a frame supported by a plurality of wheels;a set of ground engaging tools supported by the frame, the set of ground engaging tools including a hydraulic cylinder arranged with respect to the frame for raising and lowering the set of ground engaging tools, the hydraulic cylinder comprising a base, a base port, a rod and a rod port, wherein the rod is configured to extend from the base when hydraulic fluid is supplied to the base port and returned from the rod port, and wherein the rod is configured to retract toward the base when hydraulic fluid is supplied to the rod port and returned from the base port;a connector configured to supply hydraulic fluid in a supply line and return hydraulic fluid in a return line when connected to a hydraulic power source;a plurality of electronically controlled valves, the plurality of valves including a first valve configured to supply hydraulic fluid from the supply line to the hydraulic cylinder when activated, a second valve configured to return hydraulic fluid from the hydraulic cylinder to the return line when activated, and a third valve configured to bypass the first and second valves by redirecting the hydraulic fluid from the supply line to the return line when deactivated; anda controller in communication with the plurality of valves, the controller ...

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Номер записи: 59
10-03-2022 дата публикации

HYDROSTATIC TRANSAXLE

Номер: US20220074476A1
Автор: Iwaki Koji, KIYOOKA Koji, OTA Takehiro, TERADA Mai, TSUKAMOTO Michio
Принадлежит:

A hydrostatic transaxle includes: a casing; a hydraulic continuously variable transmission; and an oil filter that includes a filter body for filtering the hydraulic oil and a filter holding member configured to guide clean oil filtered in the filter body to a suction oil reservoir, in which the filter holding member includes a filter installation portion for installing the filter body, and a suction oil reservoir provided at a position different from the filter installation portion, and the filter installation portion and the suction oil reservoir are configured to be separable from each other and be couplable to each other to freely flow. 1. A hydrostatic transaxle comprising:a casing that is provided with an openable and closable filter insertion port and is filled with hydraulic oil;a hydraulic continuously variable transmission that is arranged inside the casing, the hydraulic continuously variable transmission including in combination a hydraulic pump, a hydraulic motor, and a center section provided with a closed circuit for fluidly connecting the hydraulic pump and the hydraulic motor, and including a port for charging the hydraulic oil in the closed circuit; andan oil filter that includes a filter body for filtering the hydraulic oil and a filter holding member configured to guide clean oil filtered in the filter body to a suction oil reservoir,wherein the filter holding member includes a filter installation portion for installing the filter body, and the suction oil reservoir provided at a position different from the filter installation portion, andthe filter installation portion and the suction oil reservoir are configured to be separable from each other and be couplable to each other to freely flow.2. The hydrostatic transaxle according to claim 1 , whereinan intercoupling portion between the filter installation portion and the suction oil reservoir is configured as a concave or convex cylindrical portion and is fittable, andthe intercoupling portion ...

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Номер записи: 60
03-03-2016 дата публикации

HYDRAULIC FLUID RESERVOIR WITH IMPROVED DE-AERATION

Номер: US20160061234A1
Автор: Doll Robert C., Griffiths Grant
Принадлежит:

A hydraulic fluid reservoir for de-aerating a hydraulic fluid received therein. The hydraulic fluid reservoir is of a type including two chambers separated by an intermediate baffle with a central opening connecting the chambers. In the lower chamber, cyclonic flow may be used to separate the aerated fluid from the de-aerated or non-aerated fluid and may be assisted by an inverted velocity cone. In the upper chamber, there may be a second state nucleation device, such as a mesh screen, that assists in removing entrained gases from the fluid by providing points of for the gas to nucleate thereon or collect. Additionally, a distribution header may be located in the upper chamber that returns fluid from the upper chamber to the lower chamber via a connection of the header to the return port at an eductor. 1. A hydraulic fluid reservoir for de-aerating a hydraulic fluid received therein , the hydraulic fluid reservoir having a lower chamber and an upper chamber , the lower chamber and the upper chamber being separated by an intermediate baffle with a central opening relative to the lower chamber formed therein that places the upper chamber and the lower chamber in fluid communication with one another , the lower chamber having a return port for introducing the hydraulic fluid to the lower chamber to create a cyclonic flow in the lower chamber and the lower chamber further having a suction port for removing the hydraulic fluid from the lower chamber , the hydraulic fluid reservoir comprising a lower surface of the intermediate baffle that extends upward in the axial direction as the lower surface of the baffle extends radially toward the central opening wherein the lower surface of the intermediate baffle provides a gravity-assisted path for gas bubbles in the hydraulic fluid to rise from the lower chamber into the upper chamber and to be directed through the central opening of the intermediate baffle.2. The hydraulic fluid reservoir of claim 1 , wherein the return port ...

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Номер записи: 61
02-03-2017 дата публикации

HYDRAULIC FLUID WARMUP SYSTEM AND METHOD

Номер: US20170058922A1
Автор: Kenkel Aaron R., Lazare Ann M.
Принадлежит:

In accordance with an example embodiment, a system for managing a unique hydraulic system warmup method is described. A warmup system controller is central to the system and provides an interfacing point for communication to hardware components and a machine operator. The warmup system issues commands based on sensor inputs in light of defined rules and/or known physical properties of hydraulic fluids. Hydraulic system warmup is managed by the warmup system controller, which is configured to issue commands to affect hydraulic pumps and valves. By way of a controller managed process, the system functions to maximize hydraulic system pressure and limiting release of pressures in the lines, such that the pumps are able to maintain maximum pressure for a sufficient period of time. 1. A method of controlling fluid temperature in a hydraulic system of a work machine , the machine including a controller , a user control , a temperature sensor , an electro-hydraulic pump , a control valve , and an implement , the method comprising:detecting a fluid temperature with the temperature sensor; electronically commanding the pump to a full pressure setting;', 'receiving a signal from the user control to control movement of the implement;', 'controllably moving the control valve from a first position to a second position to allow hydraulic fluid to flow from the pump to the implement;', 'actuating the implement in accordance with the signal from the user control;', 'comparing the fluid temperature to the temperature threshold; and', 'performing the executing step until the fluid temperature is at or above the temperature threshold for a predefined period of time., 'executing a warmup function when the fluid temperature is below a temperature threshold, the warmup function comprising2. The method of claim 1 , wherein the controllably moving step comprises sending an electrical command to the control valve to induce movement thereof.3. The method of claim 2 , wherein the controller ...

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Номер записи: 62
02-03-2017 дата публикации

Compact unit

Номер: US20170058923A1
Автор: Andreas BOEHLER, Markus Kuhn
Принадлежит: HYDAC FLUIDTECHNIK GMBH

The invention relates to a compact unit, at least consisting of an electric motor, which is accommodated in housing parts ( 7, 55 ) of a unit housing ( 45 ) and which drives at least one hydraulic pump and gives off heat at the same time, an air heat-exchanging device, and a fan ( 19 ), which can be driven in order t o produce an air flow. The compact unit is characerized in that a flow-conducting device ( 47, 55 ) that divides off from the air flow at least a first partial flow flowing around the electric motor and a second partial flow flowing to the heat-exchanging device is present in the unit housing ( 45 ), or that, arranged in series, the air flow first flows against the electric motor and then the heat-exchanging device, or that the incidence of the air flow occurs at least partially in the reverse direction.

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Номер записи: 63
04-03-2021 дата публикации

VEHICLE WITH GEAR AND HYDRAULIC COOLING SYSTEM

Номер: US20210062909A1
Автор: Elpers Curt A., Herlyn Ryan S., Sheidler Alan D.
Принадлежит:

A vehicle includes a frame, at least one traction device coupled to the frame for facilitating movement of the vehicle, an implement coupled to the frame and configured to perform a work operation, a gearbox, a hydraulic system having a hydraulic reservoir, and an oil cooling system configured to cool the gearbox and the hydraulic system. The oil cooling system includes first and second circuits for a cooling oil, and a crossover circuit. The first circuit includes the gearbox and a first oil-to-air cooler configured to cool the cooling oil from the gearbox. The second circuit includes the hydraulic reservoir and a second oil-to-air cooler for cooling the cooling oil from the hydraulic reservoir. The crossover circuit includes the gearbox and the hydraulic reservoir and is configured to exchange the cooling oil between the gearbox and the hydraulic reservoir to provide heat transfer between the first and second circuits. 1. A vehicle comprising:a frame;at least one traction device coupled to the frame for facilitating movement of the vehicle;an implement coupled to the frame and configured to perform a work operation;a gearbox;a hydraulic system having a hydraulic reservoir; and a first circuit for a cooling oil, the first circuit including the gearbox and a first oil-to-air cooler configured to cool the cooling oil from the gearbox;', 'a second circuit for the cooling oil, the second circuit including the hydraulic reservoir and a second oil-to-air cooler for cooling the cooling oil from the hydraulic reservoir; and', 'a crossover circuit including the gearbox and the hydraulic reservoir, the crossover circuit configured to exchange the cooling oil between the gearbox and the hydraulic reservoir to provide heat transfer between the first and second circuits., 'an oil cooling system configured to cool the gearbox and the hydraulic system, the oil cooling system including2. The vehicle of claim 1 , wherein the oil cooling system further comprises:a first pump in the ...

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Номер записи: 64
27-02-2020 дата публикации

FILTER SYSTEM FOR AN AGRICULTURAL IMPLEMENT

Номер: US20200060065A1
Автор: Anderson Brian J., Dienst Johnathon R., Harnetiaux Travis Lester, Prickel Marvin A., Raetzman Ryan R.
Принадлежит:

In one embodiment, an agricultural implement system includes a row unit, the row unit configured to dispose seed into a ground trench, and closing system corresponding to the row unit, the closing system configured to close the ground trench after disposition of the seed. The agricultural implement system further includes a double acting cylinder mechanically coupled to the closing system, the double acting cylinder comprising a cylinder side port and a rod side port and a fluid source fluidly coupled to the cylinder side port and configured to provide a cylinder side fluid. The agricultural implement system additionally includes a filter fluidly coupled to the rod side port and configured to provide a filtered fluid entering the double acting cylinder via the rod side port. 1. An agricultural implement system , comprising:a row unit, the row unit configured to dispose seed into a ground trench;a closing system corresponding to the row unit, the closing system configured to close the ground trench after disposition of the seed;a cylinder mechanically coupled to the closing system, the cylinder comprising a cylinder side port and a rod side port;a fluid source fluidly coupled to the cylinder side port and configured to provide a cylinder side fluid; anda filter fluidly coupled to the rod side port and configured to provide a filtered fluid entering the double acting cylinder via the rod side port.2. The agricultural implement system of claim 1 , wherein the filter is disposed directly upstream of the rod side port.3. The agricultural implement system of claim 1 , comprising a manifold claim 1 , a tee fitting claim 1 , or combination thereof claim 1 , wherein the filter is disposed directly upstream of the manifold claim 1 , the tee fitting claim 1 , or the combination thereof claim 1 , and wherein the manifold claim 1 , the tee fitting claim 1 , or the combination thereof claim 1 , are disposed directly upstream of the rod side port.4. The agricultural implement ...

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Номер записи: 65
28-02-2019 дата публикации

COMPRESSED AIR SUPPLY SYSTEM

Номер: US20190061459A1
Автор: Meier Joerg, Stabenow Uwe, STUENKEL Christoph
Принадлежит:

A compressed-air feed system for operating a pneumatic system includes a compressed-air supply, a compressed-air connection to the pneumatic system, at least one ventilation connection to surroundings, and a pneumatic main line between the compressed-air supply and the compressed-air connection. The pneumatic main line has an air dryer and a regeneration throttle. The compressed-air feed system further includes a first ventilation line between the pneumatic main line and the at least one ventilation connection. The first ventilation line has a first ventilation valve and a ventilation throttle. The compressed-air feed system additionally includes a second ventilation line between the compressed-air connection and the at least one ventilation connection. The second ventilation line has a second ventilation valve formed as a 2/2 directional valve. The compressed-air feed system is designed to provide an operating mode in which the second ventilation valve is open over a predetermined time period. 1. A compressed-air feed system for operating a pneumatic system , comprising:a compressed-air supply;a compressed-air connection to the pneumatic system;at least one ventilation connection to surroundings;a pneumatic main line between the compressed-air supply and the compressed-air connection, the pneumatic main line having an air dryer and a regeneration throttle;a first ventilation line between the pneumatic main line and the at least one ventilation connection, the first ventilation line having a first ventilation valve and a ventilation throttle; and,a second ventilation line between the compressed-air connection and the at least one ventilation connection, the second ventilation line having a second ventilation valve formed as a 2/2 directional valve,wherein the compressed-air feed system is designed to provide at least one operating mode in which the second ventilation valve is open over a predetermined time period of a ventilation process.2. The compressed-air feed ...

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Номер записи: 66
28-02-2019 дата публикации

ACTUATOR COOLING FLOW LIMITER

Номер: US20190063475A1
Автор: Bostiga Richard H., Reuter Charles E.
Принадлежит:

A cooling flow circuit is provided and includes a main line having first and second sections ported to piston extend and return sides of the gas turbine engine actuator, respectively, an orifice disposed along the main line between the first and second sections, a bypass line and a bypass valve. The bypass line is fluidly coupled to the first and second sections at opposite ends thereof, respectively. The bypass valve is disposed along the bypass line between the opposite ends thereof. The bypass valve has a variable flow area which is responsive to a pressure differential between the first and second sections. 1. A cooling flow circuit , comprising:a main line having first and second sections ported to piston extend and return sides of the gas turbine engine actuator, respectively;an orifice disposed along the main line between the first and second sections;a bypass line fluidly coupled to the first and second sections at opposite ends thereof, respectively; anda bypass valve disposed along the bypass line between the opposite ends thereof and having a variable flow area which is responsive to a pressure differential between the first and second sections.2. The cooling flow circuit according to claim 1 , wherein the orifice is sized for a non-minimal pressure differential between the first and second sections.3. The cooling flow circuit according to claim 1 , wherein the bypass line is disposed in parallel with the main line and the bypass valve is disposed in parallel with the orifice.4. The cooling flow circuit according to claim 1 , wherein the bypass valve comprises:a first valve opening which is fluidly coupled to one end of the bypass line;a second valve opening which is fluidly coupled to the other end of the bypass line; anda valve element which is elastically biased to move between open and closed positions relative to the first and second valve openings in response to the pressure differential.5. The cooling flow circuit according to claim 4 , further ...

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Номер записи: 67
10-03-2016 дата публикации

AIRCRAFT HYDRAULIC FLUID HEATING SYSTEM AND METHOD

Номер: US20160069362A1
Автор: KADIYALA KIRAN KUMAR
Принадлежит:

An aircraft hydraulic fluid heating system and method are disclosed. In one embodiment, pump characteristics of a hydraulic pump coupled to a reservoir are obtained. Further, total demand of the hydraulic fluid for hydraulically controlled flight controls in the aircraft is determined. Furthermore, the hydraulic fluid in the reservoir is dynamically heated based on the pump characteristics and the total demand of the hydraulic fluid. 1. A method for heating hydraulic fluid in a reservoir of an aircraft , comprising:obtaining pump characteristics of a hydraulic pump coupled to the reservoir;determining total demand of the hydraulic fluid for hydraulically controlled flight controls in the aircraft; anddynamically heating the hydraulic fluid in the reservoir based on the pump characteristics and the total demand of the hydraulic fluid.2. The method of claim 1 , wherein dynamically heating the hydraulic fluid in the reservoir based on the pump characteristics and the total demand of the hydraulic fluid comprises:setting a pressure of an electrically controlled pressure relief valve based on the pump characteristics and the total demand of the hydraulic fluid; anddynamically heating the hydraulic fluid in the reservoir by passing the hydraulic fluid through the electrically controlled pressure relief valve at the set pressure.3. The method of claim 2 , wherein setting the pressure of the electrically controlled pressure relief valve based on the pump characteristics and the total demand of the hydraulic fluid comprises:determining a current temperature of the hydraulic fluid, a predefined temperature of the hydraulic fluid to be maintained and a volume of the hydraulic fluid in the reservoir;computing energy required for heating the hydraulic fluid based on the current temperature of the hydraulic fluid, the predefined temperature of the hydraulic fluid to be maintained and the volume of the hydraulic fluid in the reservoir;determining an operating point for the ...

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Номер записи: 68
27-02-2020 дата публикации

Externally verifiable thermal compensation of cowl opening actuator

Номер: US20200063481A1
Автор: David J. Bouman
Принадлежит: Parker Hannifin Corp

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.

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Номер записи: 69
11-03-2021 дата публикации

Work Vehicle Transmission and Work Vehicle Having the Same

Номер: US20210071740A1
Автор: HANA Hidetoshi, MAEDA Kazuya, Takewa Noriaki, Tsuchida Tomonari, YOSHIKAWA Satoshi
Принадлежит:

A work vehicle transmission includes a first transmission mechanism that changes input motive power to any one of multiple speeds, and a second transmission mechanism that changes the motive power changed by the first transmission mechanism to any one of multiple speeds, the number of speeds of the second transmission mechanism being smaller than that of the first transmission mechanism. Multiple speed change multi-disc clutches of the first transmission mechanism are arranged parallel with multiple deceleration multi-disc clutches of the second transmission mechanism so as to be adjacent in the diameter direction thereof. 1. A work vehicle transmission comprising:a transmission case that also serves as an oil tank;a plurality of hydraulic devices arranged inside the transmission case; anda valve unit configured to control a flow of oil to the hydraulic devices,wherein the transmission case includes a valve unit attachment portion to which the valve unit is to be attached from outside the transmission case,wherein the valve unit has a base plate to be attached to the valve unit attachment portion, and a valve block having a plurality of electromagnetic valves, andwherein the valve unit attachment portion is provided with a recessed portion that defines and forms a storage compartment for the valve block along with the base plate.2. The work vehicle transmission according to claim 1 , wherein the valve unit attachment portion includes an oil return passage configured to return excess oil from the valve block into the transmission case at a position higher claim 1 , with respect to a vertical direction of the vehicle body claim 1 , than the valve block in the recessed portion.3. The work vehicle transmission according to claim 2 , wherein a plurality of the oil return passages are formed in two sections vertically in the valve unit attachment portion.4. The work vehicle transmission according to claim 3 , wherein the oil return passages are formed such that an opening ...

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Номер записи: 70
24-03-2022 дата публикации

System and method for deaeration

Номер: US20220088505A1
Автор: Daniel R. Frembgen, Davis B. MORAVEC, Divya Panchanathan, Matthew P. GOERTZ, Michael J. Cronin, Michael J. Gustafson, Mike J. Madsen, Vijay K. Kapoor
Принадлежит: Donaldson Co Inc

A deaerator includes gas nucleation media and a porous barrier. The deaerator may include growth media between the gas nucleation media and the porous barrier. The deaerator may be part of a system for removing gas from a fluid, where the system includes a tank with a fluid inlet and a fluid outlet and having a fluid flow path from the fluid inlet to the fluid outlet, and where the deaerator is in the fluid flow path. A method for removing gas from a fluid includes passing the fluid through the deaerator defining a fluid flow path.

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Номер записи: 71
07-03-2019 дата публикации

SCREEN FOR HYDRAULIC FLUID

Номер: US20190070532A1
Автор: THOMS Reinhardt
Принадлежит:

The invention relates to a high-pressure hydraulic fluid screening element () for inserting into a hydraulic line or into a hydraulic connection of a hydraulic device, having an annular main body (), which is aligned with respect to its axis of rotation () in a longitudinal direction (). The outside diameter of the main body () is greater than its axial length. The inner cross section of the main body () is covered over by a screening region (), which is provided with a multiplicity of apertures (). In this case, the main body () and the screening region () are produced integrally by the powder injection-molding process. 1. A screening element , comprising:a main body;a screening region that closes off the main body in a manner of a bottom of a cup; andapertures provided by the screening region.2. The element of wherein the main body has a form of a frustum of a cone.3. The element of wherein the apertures have a form of a kidney shape and are arranged in multiple concentric circles.4. The element of wherein the main body tapers in a direction of throughflow of hydraulic fluid to be screened.5. The element of wherein the screening region is formed as a dome and an inlet side is convexly stepped counter to an intended direction of throughflow.6. The element of wherein the apertures form multiple concentric circular regions and transitions between the circular regions that are stepped.7. The element of wherein the screening element is produced by a powder injection-molding process.8. The element of wherein the screening element is produced from a stainless metal or stainless metal alloy by a Metal-Injection-Molding (MIM) process.9. The element of wherein the screening region closes off the main body on an outlet side.10. The element of wherein the apertures in a direction of throughflow have a cross section that widens in the direction of flow.11. The element of wherein the apertures have rounded edges. This application is a continuation-in-part of U.S. Ser. No. 14/ ...

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Номер записи: 72
07-03-2019 дата публикации

Hydrostatic Valve Arrangement, Hydrostatic Gear Having the Valve Arrangement, and Hydrostatic Drive Having the Gear

Номер: US20190072178A1
Автор: Gepraegs Markus, Joksch Stefan
Принадлежит:

A hydrostatic valve arrangement for flushing pressure medium from a working line of a hydraulic circuit includes a flushing valve with a first flushing connection for connecting to a first working line and an output connection for connecting to a pressure medium sink. The arrangement also includes a pressure valve arranged in a pressure medium flow path of the arrangement from the output connection in the direction of the pressure medium sink. The pressure valve has a valve body on which a force equilibrium is formed. The force equilibrium includes a pressure equivalent that acts on the valve body in a direction that blocks the pressure medium flow path and an opening pressure that acts in a direction that opens the pressure medium flow path and is dependent on the pressure at the output connection. The arrangement further includes an adjusting device for shifting the force equilibrium. 1. A hydrostatic valve arrangement for flushing pressure medium from at least one working line of a hydraulic circuit , comprising:a flushing valve that includes a first flushing connection configured to connect to a first working line of the circuit and an output connection configured to connect to a pressure medium sink;a pressure valve arranged in a pressure medium flow path of the arrangement for the output connection in the direction of the pressure medium sink, the pressure valve having a valve body on which a force equilibrium is formed, the force equilibrium including (i) at least one pressure equivalent that acts on the valve body in a direction of a blocking of the pressure medium flow path and (ii) an opening pressure that acts in a direction of an opening of the pressure medium flow path and is dependent on the pressure at the output connection; andan adjusting device configured to shift the force equilibrium, the adjusting device further configured such that the opening pressure is adjusted by the adjusting device.2. The valve arrangement according to claim 1 , wherein ...

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Номер записи: 73
05-03-2020 дата публикации

LOADING VEHICLE STRUCTURE

Номер: US20200072255A1
Автор: Dueckinghaus Heinrich, Ostfechtel Christian, Wiefel Markus
Принадлежит: CLAAS Material Handling GmbH

A device for the deaeration of a hydraulic fluid of a hydraulic system has at least one hydraulic motor arrangement and a hydraulic fluid storage which is hydraulically coupled with this hydraulic motor arrangement. A suction device for sucking out the hydraulic fluid is associated with the at least one hydraulic motor arrangement such that the suction device guides hydraulic fluid out of the hydraulic motor arrangement into the hydraulic fluid storage by means of vacuum pressure (Δp). The suction device is constructed as a jet pump and is integrated in the return line between the hydraulic motor arrangement and hydraulic fluid storage. 1. A device for the deaeration of a hydraulic fluid of a hydraulic system , comprising:at least one hydraulic motor arrangement,a hydraulic fluid storage which is hydraulically coupled with the hydraulic motor arrangement, anda suction device configured for sucking out the hydraulic fluid, the suction device being associated with the at least one hydraulic motor arrangement such that the suction device guides hydraulic fluid out of the hydraulic motor arrangement into the hydraulic fluid storage by means of vacuum pressure (Δp),wherein the suction device is constructed as a jet pump and is integrated in a return line between the hydraulic motor arrangement and hydraulic fluid storage.2. The device according to claim 1 , wherein the jet pump comprises at least one motive nozzle claim 1 , a mixing chamber and a diffuser claim 1 , wherein motive medium passing through the motive nozzle is branched off from a pressurized portion of the hydraulic system claim 1 , the mixing chamber is connected to the return line of the hydraulic motor arrangement claim 1 , and the diffuser is connected to the return line of the hydraulic fluid storage.3. The device according to claim 2 , wherein the motive medium passing through the motive nozzle is branched off from the preloaded scavenging oil of the hydraulic motor arrangement.4. The device according ...

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Номер записи: 74
05-03-2020 дата публикации

PRESSURE CONTROL DEVICE

Номер: US20200072337A1
Автор: CHEN Weiming, KURAMOCHI Kenta, Nakano Takeshi, YAMAKI Yoshinori, YASUDA Tomohiro
Принадлежит: NIDEC TOSOK CORPORATION

The disclosure provides a pressure control device that improves the workability in assembling a body and a filter unit. The pressure control device includes a body and a filter unit. The body has a flow path that includes a groove and a widened part. The widened part is connected to the groove, extends to a bottom of the groove, and has a width larger than a width of the groove. The filter unit is housed along a depth direction of the widened part to capture foreign matter mixed in a fluid that passes through the flow path. The filter unit includes a cylindrical frame and a flat plate-shaped filter member, wherein the frame includes a through hole part that penetrates in a direction orthogonal to a central axis, and the filter member is disposed to block the through hole part. 1. A pressure control device , comprising:a body having a flow path that comprises a groove and a widened part, wherein the widened part is connected to the groove, extends to a bottom of the groove, and has a width larger than a width of the groove; anda filter unit housed along a depth direction of the widened part to capture foreign matter mixed in a fluid that passes through the flow path,wherein the filter unit comprises a cylindrical frame and a flat plate-shaped filter member, wherein the frame comprises a through hole part that penetrates in a direction orthogonal to a central axis of the frame, and the filter member is disposed to block the through hole part.2. The pressure control device according to claim 1 , wherein the filter member is disposed along the central axis of the frame.3. The pressure control device according to claim 1 , wherein an outer circumferential part of the frame is rounded in an arc shape claim 1 , andthe widened part comprises a curved part that is curved along the rounded arc shape.4. The pressure control device according to claim 1 , wherein the filter unit does not protrude from the flow path when housed in the widened part.5. The pressure control device ...

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Номер записи: 75
12-03-2020 дата публикации

PREVENTION OF CAVITATION

Номер: US20200079483A1
Автор: Antony John Joseph, Pashley Richard Mark, Taseidifar Mojtaba
Принадлежит:

This disclosure relates to a system for reducing cavitation at a surface that moves relatively with respect to a first fluid. The system comprises a degasser configured to at least partially degas a second fluid. The system also comprises a reservoir in communication with the degasser and configured to house the at least partially degassed second fluid, the reservoir having an outlet that is arranged for directing the second fluid towards the surface. The system is configured such that the directing of the at least partially degassed second fluid towards the surface forms a boundary layer at the surface. The boundary layer is adapted to at least partially increase the negative pressure required to initiate cavitation at the surface so as to reduce the occurrence of cavitation during such relative movement. 1. A method for reducing cavitation at a surface that moves relatively with respect to a first fluid , the method comprising directing a second fluid that is at least partially degassed towards the surface such that the second fluid is able to form a boundary layer at the surface , whereby the boundary layer at least partially increases the negative pressure required to initiate cavitation at the surface so as to reduce the occurrence of cavitation during such relative movement.2. A method as claimed in claim 1 , wherein the second fluid is degassed by more than 50% relative to a gassed-equilibrated form of the second fluid.3. A method as claimed in claim 1 , wherein the second fluid is directed towards the surface at a first volumetric flow rate.4. A method as claimed in claim 3 , wherein the first fluid is directed towards the surface at a second volumetric flow rate claim 3 , with the first volumetric flow rate being up to 50% of the second volumetric flow rate.5. A method as claimed in claim 1 , wherein the second fluid is periodically directed to the surface using a pulsed flow to form the boundary layer.6. A method as claimed in claim 1 , wherein the second ...

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Номер записи: 76
02-04-2015 дата публикации

AIRCRAFT HYDRAULIC SYSTEM

Номер: US20150089936A1
Автор: Mears John S.
Принадлежит: GE AVIATION SYSTEMS LLC

An aircraft hydraulic system for operating a plurality of hydraulically-operated actuators in the aircraft having a hydraulic reservoir in which hydraulic fluid is stored, a hydraulic distribution system coupling the hydraulic reservoir to the actuators and having a main flow line coupled to the hydraulic reservoir, a hydraulic pump fluidly coupled to the main flow line and the hydraulic reservoir to pump hydraulic fluid from the reservoir to the main flow line, a main filtration system fluidly coupled to the main flow line upstream of at least some of the actuators, and a self-cleaning filter fluidly coupled upstream of the main filtration system. 1. An aircraft hydraulic system for operating a plurality of hydraulically-operated actuators in the aircraft , comprising:a hydraulic reservoir in which hydraulic fluid is stored;a hydraulic distribution system coupling the hydraulic reservoir to the actuators and having a main flow line coupled to the hydraulic reservoir;a hydraulic pump fluidly coupled to the main flow line and the hydraulic reservoir to pump hydraulic fluid from the hydraulic reservoir to the main flow line;a main filtration system fluidly coupled to the main flow line upstream of at least some of the actuators; anda self-cleaning filter fluidly coupled upstream of the main filtration system and having a body with a main flow portion, coupled in-line to the main flow line, and a branch portion, with a branch filter located within the body to filter hydraulic fluid passing through the branch portion and oriented relative to the main flow portion such that hydraulic fluid flowing through the main flow portion cleans the branch filter.2. The aircraft hydraulic system of wherein the branch portion is sized to be less than half the size of the main flow portion.3. The aircraft hydraulic system of wherein the branch portion is less than or equal to ¼ of the main flow portion.4. The aircraft hydraulic system of wherein the main flow portion has a one-inch ...

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Номер записи: 77
21-03-2019 дата публикации

FILTER BAND ASSEMBLY FOR SOLENOID-ACTUATED VALVE

Номер: US20190085878A1
Автор: Schneider Kevin, Typinski Ronald P.
Принадлежит: BORGWARNER INC.

A filter band assembly for a solenoid-actuated valve includes a filter band adapted to be disposed about a valve body of the solenoid-actuated valve. The filter band has a first end at one end and a second end at another end. The filter band assembly also includes a separate bracket affixed to one of the first end and the second end and adapted to support the one of the first end and the second end on the valve body to allow the first end and the second end to be joined together in a closed position. 1. A filter band assembly for a solenoid-actuated valve , said filter band assembly comprising:a filter band adapted to be disposed about a valve body of the solenoid-actuated valve, said filter band having a first end at one end and a second end at another end; anda separate bracket affixed to one of said first end and said second end and adapted to support said one of said first end and said second end on the valve body to allow said first end and said second end to be joined together in a closed position.2. A filter band assembly as set forth in wherein said bracket includes a plurality of posts extending outwardly.3. A filter band assembly as set forth in wherein said filter band includes a plurality of apertures extending therethrough to receive said posts.4. A filter band assembly as set forth in claim I wherein said bracket is generally arcuate in shape.5. A filter band assembly as set forth in wherein said bracket includes a support surface claim 4 , said posts extending radially from said support surface.6. A filter band assembly as set forth in wherein said bracket includes at least one flow channel extending circumferentially therealong opposite said support surface7. A filter band assembly as set forth in claim I wherein said bracket includes a locking mechanism to lock said first end and said second end together.8. A filter band assembly as set forth in wherein said band includes at least one filter aperture.9. A filter assembly as set forth in including a ...

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Номер записи: 78
30-03-2017 дата публикации

ELECTROMAGNET FOR A HYDRAULIC SYSTEM

Номер: US20170089370A1
Автор: CORELL Christian, MEYER Roland, RANG Oliver, Schuller Dietmar
Принадлежит:

An electromagnet for a hydraulic system, such as an automatic transmission of a motor vehicle. The electromagnet may include an armature chamber filled with hydraulic medium, which may be fluidically connected to hydraulic lines of the hydraulic system, and may have an armature mounted therein. The armature may have an adjustable stroke and may include a shut-off body. The armature may divide the armature chamber into an opening-side chamber facing the flow opening, and an inner chamber facing away from it. During a stroke movement of the armature, an oil exchange may occur, during which a displacement volume of the hydraulic medium overflows from the opening-side chamber into the inner chamber. The electromagnet may further include a hydraulic medium reservoir, which may store a hydraulic medium having a higher degree of purity than the hydraulic medium in the hydraulic lines and which may be fluidically connected to the opening-side chamber. 110-. (canceled)11. An electromagnetic valve for a hydraulic system , comprising:an armature chamber, the armature chamber configured to be filled with a hydraulic medium and fluidically connected to a plurality of hydraulic lines of the hydraulic system, the hydraulic lines adapted to transport hydraulic medium;the armature chamber further comprising an armature, the armature mounted in the armature chamber such that the stroke of the armature is adjustable, the armature further comprising a shut-off body;the armature chamber further comprising an opening-side chamber positioned on one side of the armature and an inner chamber positioned on another side of the armature, wherein the opening side chamber faces a flow opening of the armature chamber and the inner chamber faces away from the flow opening of the armature chamber;wherein the armature is positioned such that a stroke movement of the armature induces an oil exchange, wherein a displacement volume of the hydraulic medium overflows from the opening-side chamber into ...

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Номер записи: 79
30-03-2017 дата публикации

ELECTROMAGNET FOR A HYDRAULIC SYSTEM

Номер: US20170089371A1
Автор: CORELL Christian, DEIMEL Andreas, MEYER Roland, RANG Oliver, Schöffmann Michael, Schuller Dietmar
Принадлежит:

An electromagnetic valve for a hydraulic system for an automatic transmission of a vehicle. An armature chamber is filled with hydraulic medium and fluidically connected to hydraulic lines of the hydraulic system. An armature is mounted in the armature chamber such that its stroke is adjustable. The armature includes a shut-off body and divides the armature chamber into an opening-side chamber facing the flow opening and into an inner chamber facing away from the flow opening. During a stroke of the armature, an oil exchange occurs, and a displacement volume of the hydraulic medium overflows from the opening-side chamber into the inner chamber. A hydraulic line leading to the opening-side chamber or to the inner chamber of the armature chamber includes a dirt collecting element that is designed as a permanent magnet and that retains contaminations in the hydraulic medium that flows through the hydraulic line during an oil exchange. 110-. (canceled)11. An electromagnetic valve for a hydraulic system , comprising:an armature chamber filled with a hydraulic medium and fluidically connected to hydraulic lines of the hydraulic system;an armature mounted in the armature chamber such that its stroke is adjustable, the armature having a shut-off body and dividing the armature chamber into an opening-side chamber facing a flow opening and an inner chamber facing away from the flow opening,wherein during a stroke movement of the armature, an oil exchange occurs, during which a displacement volume of the hydraulic medium overflows from the opening-side chamber into the inner chamber, wherein a hydraulic line leading to the opening-side chamber or to the inner chamber of the armature chamber has at least one dirt collecting element that is designed as a permanent magnet and that retains contaminations in the hydraulic medium that flows through the hydraulic line during an oil exchange, wherein the dirt collecting element is a dirt collecting contour that is formed on an inner ...

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Номер записи: 80
09-04-2015 дата публикации

Systems and Methods for Heat Balance and Transport for Aircraft Hydraulic Systems

Номер: US20150096288A1
Автор: Liao Jianmin
Принадлежит:

A thermal management system is provided. The thermal management system includes a first hydraulic system for circulating a first hydraulic fluid at a first temperature, a second hydraulic system for circulating a second hydraulic fluid at a second temperature that is higher than the first temperature, and a heat exchanger coupling the first hydraulic system to the second hydraulic system, wherein the heat exchanger is configured to exchange heat between the first hydraulic fluid and the second hydraulic fluid. 1. A thermal management system comprising:a first hydraulic system for circulating a first hydraulic fluid at a first temperature;a second hydraulic system for circulating a second hydraulic fluid at a second temperature that is higher than the first temperature;a heat exchanger coupling said first hydraulic system to said second hydraulic system, wherein said heat exchanger is configured to exchange heat between the first hydraulic fluid and the second hydraulic fluid.2. The thermal management system of claim 1 , wherein said second hydraulic system further comprises:a pump; anda case drain coupled to said pump and to said heat exchanger.3. The thermal management system of claim 1 , wherein said first hydraulic system further comprises a pump claim 1 , said heat exchanger is coupled to said first hydraulic system upstream from said pump.4. The thermal management system of claim 1 , wherein said first hydraulic system further comprises at least one actuator claim 1 , said heat exchanger is coupled to said first hydraulic system downstream from said at least one actuator.5. The thermal management system of claim 1 , wherein said heat exchanger is a tube-in-tube heat exchanger comprising:a first tube; anda second tube, wherein said first tube circumscribes said second tube.6. The thermal management system of claim 5 , wherein said first tube is in flow communication with said first hydraulic system and said second tube is in flow communication with said second ...

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Номер записи: 81
01-04-2021 дата публикации

Arrangement for a Utility Vehicle

Номер: US20210093991A1
Автор: GRIESSER Fabian, KUHLEN Christian, LEINUNG Andreas, SCHNITTGER Karsten
Принадлежит:

An arrangement for a utility vehicle includes at least one air dryer unit and a regulating unit, wherein the air dryer unit and the regulating unit are designed in each case as separate units. The air dryer unit has at least one air dryer module, in particular an air dryer cartridge, at least one discharge valve and at least one control line for the pneumatic control of the discharge valve. At least one connecting line is provided in the air dryer unit with connection to the air dryer module. The connecting line leads directly to a consumer non-return valve for the air dryer unit, which is arranged outside of the air dryer unit, wherein the connecting line can be used at least partially bi-directionally and/or can be or is connected to a bi-directionally usable line section. 115.-. (canceled)16. An arrangement for a utility vehicle , comprising:at least one air dryer unit; the air dryer unit and the regulating unit are each configured as separate units,', 'the air dryer unit has at least one air dryer module, at least one discharge valve and at least one control line for pneumatically controlling the discharge valve,', 'in the air dryer unit, following the air dryer module, at least one connecting line leads directly to a consumer non-return valve for the air dryer unit, which is located outside the air dryer unit, and', 'the connecting line is at least partially bi-directionally usable and/or is connectable or connected to a bi-directionally usable line section., 'a regulating unit, wherein'}17. The arrangement as claimed in claim 16 , whereinthe control line additionally serves for pneumatically controlling a compressor.18. The arrangement as claimed in claim 16 , whereinthe connecting line is a connecting line without any pneumatic elements.19. The arrangement as claimed in claim 16 , whereinthe connecting line is unthrottled and/or does not have a throttle element.20. The arrangement as claimed in claim 16 , whereinthe connecting line leads to a system boundary ...

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Номер записи: 82
26-06-2014 дата публикации

LIQUID AND AIR SEPARATOR

Номер: US20140174070A1
Автор: Allott Mark, Hart Lynsey, Olateru Isaiah, Ries Jeffrey R.
Принадлежит: CATERPILLAR INC.

A liquid and air separator includes a housing having a sloped floor and a domed roof, an adaptor, a spacer, a deflector having a plurality of perforations thereon, and a plurality of breathers, each of the plurality of breathers having a stepped portion. 1. A liquid and air separator comprising: a dome-shaped roof; and', 'a sloped floor;, 'a housing having an exterior portion and an interior portion wherein the interior portion comprisesa deflector disposed in the interior portion of the housing; anda breather coupled to the housing, the breather being configured to allow air to pass from the atmosphere to the interior of the housing.2. The liquid and air separator of wherein the breather includes a cap and a stem claim 1 , the interior of the stem having a first diameter and a second diameter claim 1 , the first diameter being smaller than the second diameter.3. The liquid and air separator of wherein the interior of the stem has a third diameter claim 2 , the second diameter being smaller than the third diameter.4. The liquid and air separator of wherein the breather includes a plurality of openings disposed on an overhang of the cap.5. The liquid and air separator of wherein the deflector includes a solid center section and an outer section claim 1 , the outer section having a plurality of perforations disposed thereon.6. The liquid and air separator of wherein the sloped floor has an opening disposed in the center of the sloped floor.7. The liquid and air separator of wherein the housing includes a shelf claim 1 , the shelf supporting a portion of the deflector.8. A vehicle comprising:a frame;a hydraulic tank coupled to the frame;a hydraulic pump coupled to the frame, the hydraulic pump configured to draw fluid from the hydraulic tank;a work implement coupled to the frame;a hydraulic actuator coupled to the work implement and fluidly coupled to the hydraulic pump, the hydraulic actuator being configured to selectively move the work implement; and [ a dome-shaped ...

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Номер записи: 83
05-04-2018 дата публикации

POWER STEERING TANK BAFFLE

Номер: US20180093704A1
Автор: LAU Tok, PARAK Travis James
Принадлежит:

A power steering tank baffle includes a filter member, a hood member and a rib member. The filter member includes an inflow portion and an outflow portion, the inflow portion including a first plurality of openings and a second plurality of openings. The hood member is disposed over the inflow portion. The rib member connects the filter member and the hood member, the rib member being disposed on the inflow portion so as to separate the first plurality of openings and the second plurality of openings. 1. A power steering tank baffle , comprising:a filter member including an inflow portion and an outflow portion, the inflow portion including a first plurality of openings and a second plurality of openings;a hood member disposed over the inflow portion; anda rib member connecting the filter member and the hood member, the rib member being disposed on the inflow portion so as to separate the first plurality of openings and the second plurality of openings.2. The power steering tank baffle of claim 1 , whereinthe outflow portion has a surface area that is greater than a surface area of the inflow portion.3. The power steering tank baffle of claim 1 , whereinthe rib member is configured to direct a first portion of a fluid passing through the first plurality of openings in a first direction and a second portion of the fluid passing through the second plurality of openings in a second direction, the first direction being different from the second direction.4. The power steering tank baffle of claim 1 , whereinthe hood member is disposed such that a radial inner edge of the hood member is disposed radially closer to a center of the filter member than radial inner edges of the first plurality of openings and the second plurality of openings.5. The power steering tank baffle of claim 1 , whereinthe hood member is disposed about 6 mm from the filter member.6. The power steering tank baffle of claim 1 , whereinthe filter member is configured to be disposed within a power ...

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Номер записи: 84
12-05-2022 дата публикации

HYDRAULIC POWER SYSTEM AND METHOD FOR CONTROLLING SAME

Номер: US20220145909A1
Автор: Hughes Nathan Adam, Keeton Benjamin W., Van Weelden Curtis L.
Принадлежит:

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 ...

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Номер записи: 85
12-05-2022 дата публикации

SUCTION STRAINER

Номер: US20220145912A1
Автор: Hashimoto Shigeru, Kitajima Nobuyuki
Принадлежит:

Air bubbles are removable with the use of an air vent structure having a compact and simple configuration. An air vent hole is formed in an upper plate that covers an entire upper end surface of a filtration section having a substantially tubular shape formed by bending a thin plate in a pleat shape. A moving member is provided to be movable between a position of closing the air vent hole and a position of opening the air vent hole. 1. A suction strainer provided inside a tank in which oil is stored , the suction strainer comprising:a tubular filtration section comprising a thin plate bended into a pleat shape;an upper plate that covers an entire upper end surface of the filtration section, the upper plate having an air vent hole; anda moving member provided to be movable between a position of closing the air vent hole and a position of opening the air vent hole.2. The suction strainer according to claim 1 , whereinthe upper plate includes a rod-shaped member provided with a stopper on an upper end portion;the air vent hole is provided around the rod-shaped member in plan view;the moving member is a plate-shaped member having a hole into which the rod-shaped member is inserted; andthe moving member is movable between a lower end position where the moving member is adjacent to the upper plate to close the air vent hole and an upper end position where the moving member abuts on the stopper.3. The suction strainer according to claim 2 , whereina first projection and a second projection having circular ring shapes in plan view are disposed on a lower surface of the moving member; andthe first projection is disposed in a vicinity of an inner peripheral surface of the moving member, and the second projection is disposed in a vicinity of an outer peripheral surface of the moving member.4. The suction strainer according to claim 1 , comprisinga hinge provided on a first surface orthogonal to an axis of the filtration section of the upper plate, whereinthe air vent hole is ...

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Номер записи: 86
26-03-2020 дата публикации

HYDRAULIC OIL COOLING SYSTEM

Номер: US20200095750A1
Автор: CARLSON Jason, TAKEMURA Toshihiko
Принадлежит:

A hydraulic cooling system for a heavy-equipment machine, with the heavy-equipment machine including a frame supported on the ground by a ground-drive assembly, a cab extending upward from the frame, and an attachment tool for performing work. The hydraulic cooling system comprises a main housing and a cooling assembly housed at least partly within the main housing, with the cooling assembly being configured to reduce a temperature of hydraulic oil flowing through the hydraulic cooling system. The hydraulic cooling system further comprises an attachment assembly for attaching the main housing to the cab of the heavy-equipment machine. The main housing is configured to extend rearward from the cab. 1. A hydraulic cooling system for a heavy-equipment machine , with the heavy-equipment machine including a frame supported on the ground by a ground-drive assembly , a cab extending upward from the frame , and an attachment tool for performing work , wherein the hydraulic cooling system comprises:a main housing;a cooling assembly housed at least partly within said main housing, wherein said cooling assembly is configured to reduce a temperature of hydraulic oil flowing through said hydraulic cooling system; andan attachment assembly for attaching said main housing to the cab of the heavy-equipment machine,wherein said main housing is configured to extend rearward from the cab of the heavy-equipment machine.2. The hydraulic cooling system of claim 1 , wherein said hydraulic cooling system is configured such that said main housing does not extend more than five inches above a maximum height of the cab.3. The hydraulic cooling system of claim 1 , wherein said cooling assembly comprises a cooling element through which the hydraulic oil is configured to flow and one or more fans for directing air flow across the cooling element.4. The hydraulic cooling system of claim 3 , wherein said cooling element is positioned above said one or more fans.5. The hydraulic cooling system of ...

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Номер записи: 87
12-04-2018 дата публикации

AXLE ASSEMBLY WITH HYDRAULICALLY-OPERATED DISCONNECT MECHANISM AND SPIN-ON HYDRAULIC FILTER

Номер: US20180100524A1
Автор: Downs James P., Valente Paul J.
Принадлежит:

An axle assembly can include a housing defining a reservoir and cylindrical bore open thereto. A clutch can selectively transmit torque between input and output members. A first inlet/outlet of a pump can be in fluid communication with the reservoir and define first threads coaxial with the cylindrical bore. The pump can be configured to pump fluid from the first inlet/outlet to an actuator of the clutch via a second inlet/outlet. The filter can include a base, port, and filter element. The port can define second threads that threadably engage the first threads. The base can be fixedly coupled to the port and include a cylindrical wall coaxial with the second threads. A seal member can form a seal between the cylindrical wall and the cylindrical bore when the first and second threads are engaged. The filter element can be disposed between the reservoir and the first inlet/outlet. 1. An axle assembly comprising:a housing defining a reservoir and a cylindrical bore open to the reservoir;an input member and an output member;a clutch including a hydraulic actuator operable to selectively activate the clutch to selectively transmit rotary power between the input member and the output member;a pump mounted to the housing, the pump including a first inlet/outlet and a second inlet/outlet, the first inlet/outlet being in fluid communication with the reservoir and defining a first set of threads coaxial with the cylindrical bore, the second inlet/outlet being in fluid communication with the actuator, the pump being configured to pump a fluid between the first inlet/outlet and the second inlet/outlet; anda filter including a filter base, a filter port, a filter element, and a seal member, the filter port defining a second set of threads configured to threadably engage the first set of threads, the filter base being fixedly coupled to the filter port and including a cylindrical wall coaxial with the second set of threads, the seal member configured to form a seal between the ...

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Номер записи: 88
08-04-2021 дата публикации

COILED FILTER FOR HYDRAULIC COMPONENT

Номер: US20210102562A1
Автор: BARRON Richard J., Murphy Brian, Ruck Gunther, Sader Mohamad
Принадлежит: ZF Active Safety US Inc.

A coiled filter for use in a hydraulic braking system of a vehicle comprises a coiled mesh-like structure which is configured to be installed around a first surface of a cylindrical hydraulic component. The coiled filter is configured to have an internal spring force as a retention force which couples the filter to the first surface of the cylindrical hydraulic component. The filter may be pre-coiled prior to installation by plastically deforming to a diameter that is smaller than the diameter of the cylindrical hydraulic component on which the filter is installed. 1. A filter comprising:a coiled mesh-like structure which is configured to be installed around a first surface of a cylindrical hydraulic component, and wherein the filter is configured to have an internal spring force as a retention force which couples the filter to the first surface of the cylindrical hydraulic component.2. The filter of wherein the cylindrical hydraulic component includes an internal passage and at least one passageway extending radially outwardly to the outside of the cylindrical hydraulic component.3. The filter of wherein the filter is configured to be installed proximate to the at least one passageway claim 2 , such that the filter is configured to prevent foreign matter from flowing into the cylindrical hydraulic component.4. The filter of wherein the filter is pre-coiled prior to installation by plastically deforming to a second diameter that is smaller than a first diameter of the first surface of the cylindrical hydraulic component.5. The filter of wherein the cylindrical hydraulic component includes at least one undercut portion having a third diameter claim 1 , wherein the third diameter is less than a first diameter of the first surface of the cylindrical hydraulic component claim 1 , and wherein the filter is disposed within the at least one undercut portion.6. The filter of wherein the filter and the cylindrical hydraulic component are configured to be installed into a ...

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Номер записи: 89
08-04-2021 дата публикации

HYDRAULIC SYSTEM OF INDUSTRIAL VEHICLE

Номер: US20210102563A1
Автор: Maruyama Daisuke, Sato Tomoya
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A hydraulic system of an industrial vehicle includes an oil tank in which hydraulic oil is retained; a hydraulic pump that draws in the hydraulic oil from the tank and supply the oil to a loading actuator and a brake unit; a brake valve that controls the hydraulic oil to be supplied to the brake unit according to an operation of a brake operation tool; a hydraulic oil cooler that cools the hydraulic oil; a cooling passage that allows the hydraulic oil to flow toward the cooler and further allows the oil cooled in the cooler to flow toward the brake unit; and a switching valve that switches between a first oil passage that cuts off a supply of the hydraulic oil from the hydraulic pump to the cooling passage and a second oil passage that allows the supply of the hydraulic oil from the hydraulic pump to the cooling passage. 1. A hydraulic system of an industrial vehicle including a loading actuator and a brake unit that are driven by hydraulic oil , the hydraulic system of an industrial vehicle comprising:an oil tank in which the hydraulic oil is retained;a hydraulic pump configured to draw in the hydraulic oil from the oil tank and supply the hydraulic oil to the loading actuator and the brake unit;a control valve configured to control the hydraulic oil supplied from the hydraulic pump to the loading actuator;a brake valve configured to control the hydraulic oil to be supplied to the brake unit according to an operation of a brake operation tool;a hydraulic oil cooler configured to cool the hydraulic oil;a cooling passage that allows the hydraulic oil to flow toward the hydraulic oil cooler and further allows the hydraulic oil cooled in the hydraulic oil cooler to flow toward the brake unit; anda switching valve configured to switch between a first oil passage that cuts off a supply of the hydraulic oil from the hydraulic pump to the cooling passage and a second oil passage that allows the supply of the hydraulic oil from the hydraulic pump to the cooling passage.2. ...

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Номер записи: 90
04-04-2019 дата публикации

Effluent processing apparatus and method for a vehicle air brake charging system

Номер: US20190100190A1
Автор: David W. Perry, Fred W. Hoffman, Gregory R. Ashley, Stephen Howe
Принадлежит: BENDIX COMMERCIAL VEHICLE SYSTEMS LLC

An effluent processing apparatus is provided for a vehicle air brake charging system. The effluent processing apparatus comprises an inlet port through which effluent from a purge valve of an air dryer can be received and an outlet port. The effluent processing apparatus also comprises a spiral-shaped effluent channel having a portion of decreasing channel width disposed between the inlet port and the outlet port. The spiral-shaped effluent channel is provided for increasing velocity of an effluent stream as the effluent stream flows through the decreasing channel width portion of the spiral-shaped effluent channel.

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Номер записи: 91
20-04-2017 дата публикации

Device for detachable fastening of a drying agent cartridge to a housing section of a compressed-air treatment installation of a vehicle

Номер: US20170106335A1
Автор: Georg Haslberger, Oliver Kaupert, Thomas Hofstetter, Wolfgang Kolland
Принадлежит: MAN Truck and Bus SE

A device is provided for detachably fastening a drying agent cartridge to a housing section of a compressed-air treatment installation of a vehicle. The drying agent cartridge has a cartridge housing with a cover and a carrier element, which, in an installed position, is detachably fastened to the housing section. The device includes a thread arranged on the carrier element, and a counterpart thread arranged on the housing section, and a sealing element arranged between the carrier element and the housing section. The sealing element is arranged in a seal groove of the housing section and fluidically connects the seal groove to a pressurizable housing chamber of the compressed-air treatment installation, can be acted on with a system pressure of the compressed-air treatment installation in order to generate and/or increase the axial compression of the sealing element between the carrier element and the housing section.

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Номер записи: 92
19-04-2018 дата публикации

LOW VOLUME NITROGEN SYSTEMS

Номер: US20180106430A1
Автор: Miller Zane A., Young Gregory E.
Принадлежит:

A system to maintain an inert ullage in a hydrocarbon tank. The system provides for outgassing/venting of ullage gases when a high pressure event is found within the tank. Further, when a low pressure event occurs, during fuel discharge or based on ambient conditions, a source of inert gas, such as nitrogen) supplies gas on-demand to the hydrocarbon tank via a pressure regulator (preferably along the venting system) to maintain both the pressure and inerting of the ullage. A method for maintaining the inert ullage is also provided, whereby a low pressure event triggers a supply of inert gas into the tank. 1. An automated hydrocarbon tank maintenance system comprising:a. a hydrocarbon tank comprising an ullage and a vent system, said vent system comprising a pressure relief valve;b. a source of inert gas coupled with said vent system, said source in fluid communication with said ullage;c. a pressure regulator coupled between said source and said vent system, whereby said pressure regulator adapted to allow inert gas to enter said hydrocarbon tank from said source when said pressure regulator registers a low pressure below a first predetermined low pressure threshold.2. The automated hydrocarbon tank maintenance system of wherein said pressure regulator is coupled to said pressure relief valve.3. The automated hydrocarbon tank maintenance system of wherein said pressure regulator adapted to open said vent system to accept gas from an external source when said pressure regulator registers a low pressure below a second predetermined low pressure threshold claim 1 , said second low pressure threshold being lower than said first low pressure threshold.4. The automated hydrocarbon tank maintenance system of claim 3 , wherein said pressure regulator first predetermined low pressure level is set at approximately two inches of water column pressure.5. The automated hydrocarbon tank maintenance system of claim 3 , wherein said pressure regulator second predetermined low ...

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Номер записи: 93
11-04-2019 дата публикации

Filter device

Номер: US20190105584A1
Автор: Nobuki Sasaki, Nobuyuki Kitajima, Yoshinori Tsurusaki
Принадлежит: Yamashin Filter Corp

An air vent hole includes a substantially columnar hole main body portion, a first hole portion formed on the upper side of the hole main body portion, and a second hole portion formed on the lower side of the hole main body portion. Each of the first hole portion and the second hole portion partly has, in a cross section of the hole portion substantially orthogonal to a first direction that is a longitudinal direction of the hole main body portion, a cross-sectional area smaller than a cross-sectional area of a cross section of the hole main body portion substantially orthogonal to the first direction. A float inserted into the air vent hole is movable between a position where the float occludes the first hole portion and a position where the float occludes the second hole portion. The float occludes the first hole portion under the weight of the float. However, the float is pushed up by air. Furthermore, the float is formed of a material having a smaller specific gravity than a liquid to be filtered. Thus, the float is pushed up by the liquid to occlude the first hole portion.

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Номер записи: 94
29-04-2021 дата публикации

VALVE ASSEMBLIES TO SUPPLY FLUID PRESSURE TO COMPONENTS IN MULTIPLE TRANSMISSION OPERATING MODES

Номер: US20210123463A1
Автор: Andrews Kenneth M.
Принадлежит:

Transmissions, filter assemblies for transmissions, and valve assemblies for transmissions are disclosed herein. A transmission includes an input shaft, an output shaft, and a hydraulic system. The input shaft is configured to receive rotational power supplied by a drive unit. The output shaft is coupled to the input shaft and configured to provide rotational power supplied to the input shaft to a load. The hydraulic system is configured to supply fluid to one or more fluid demand devices coupled between the input shaft and the output shaft in one or more operating modes of the transmission. The hydraulic system includes a filter assembly having a filter element and a valve assembly fluidly coupled to the filter element. 1. A transmission for a vehicle , the transmission comprising:an input shaft configured to receive rotational power supplied by a drive unit;an output shaft coupled to the input shaft and configured to provide rotational power supplied to the input shaft to a load; and a housing having an interior chamber; and', 'a spool movable in the interior chamber between a de-stroked position, in which the spool permits fluid flow through the valve assembly to the one or more fluid demand devices substantially without application of fluid pressure to the spool by fluid passed through the filter element, and a stroked position, in which the spool permits fluid flow through the valve assembly to the one or more fluid demand devices in response to fluid pressure applied to the spool by fluid passed through the filter element,', 'wherein the spool is formed to include a plurality of spiraled slots shaped to conduct fluid therethrough when the spool is in the stroked position to improve fluid flow to the one or more fluid demand devices through the valve assembly., 'a hydraulic system configured to supply fluid to one or more fluid demand devices coupled between the input shaft and the output shaft in one or more operating modes of the transmission, wherein the ...

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Номер записи: 95
02-04-2020 дата публикации

INTERNAL VALVE TRANSMITTER FLANGE

Номер: US20200102973A1
Автор: Etheridge Matthew Lee, Stroth Trevor Thomas
Принадлежит:

A transmitter flange includes a flange body having a valve opening therein, the valve opening having a valve seat, and an internal valve configured to be retained in the valve opening. A retaining ring may be configured to thread into the valve opening to further retain the internal valve within the opening. 1. A transmitter flange , comprising:a flange body having a valve opening therein, the valve opening having a valve seat and internal threads; andan internal valve configured to be retained in the valve opening, the internal valve having external threads configured to thread into the internal threads to retain the internal valve in the valve opening.2. The transmitter flange of claim 1 , wherein the valve opening is at a side of the flange body.3. The transmitter flange of claim 1 , wherein the internal valve has a valve seating surface claim 1 , the valve seating surface and the valve seat being foiiiied of metal claim 1 , and forming a metal on metal seal therebetween when the internal valve is retained in the valve opening.4. The transmitter flange of claim 1 , and further comprising a retaining ring claim 1 , the retaining ring configured to thread into the valve opening to further retain the internal valve within the opening.5. The transmitter flange of claim 1 , wherein the internal valve is recessed into a face of the flange body when retained therein.6. The transmitter flange of claim 1 , wherein the flange is a coplanar flange.7. The transmitter flange of claim 1 , wherein the internal valve has a drain hole machined therein.8. The transmitter flange of claim 1 , wherein the flange body has a drain hole machined therein between the valve opening and an external surface of the flange body.9. The transmitter flange of claim 1 , wherein a stem of the internal valve comprises:a non-rotating stem portion having a seating surface configured to engage the valve seat, the non-rotating stem portion slidably engaged in the valve opening; anda rotating stem joint, ...

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Номер записи: 96
26-04-2018 дата публикации

HYDRAULIC CONTROL CIRCUIT

Номер: US20180112771A1
Автор: KATOU Katsuo
Принадлежит: JATCO Ltd

A hydraulic control circuit includes a first pressure regulating valve for regulating a pump discharge pressure, a second pressure regulating valve for adjusting a pilot pressure to a torque converter pressure, and a first oil passage that connects an output port of the first pressure regulating valve and a torque-converter input-side oil passage, the second pressure regulating valve having an input port connected to the first oil passage through a second oil passage, a drive port connected to the first oil passage through a third oil passage, a spool axially displaced according to a drive pressure inputted into the drive port for regulating the torque converter pressure, and an output port. A throttle is provided between the connection section of the first and third oil passages and the connection section of the first and second oil passages, for adjusting the torque converter pressure to an appropriate pressure. 1. A hydraulic control circuit comprising:a first pressure regulating valve for regulating a discharge pressure of an oil pump;a second pressure regulating valve for adjusting an output hydraulic pressure of the first pressure regulating valve to a supply pressure to an input-side oil passage of a hydraulic drive device which is hydraulically controlled;a first oil passage that connects an output port of the first pressure regulating valve and the input-side oil passage; an input port connected to a connection section of the first oil passage and the input-side oil passage through a second oil passage;', 'a drive port connected to the first oil passage through a third oil passage;', 'a valve element axially displaced according to a drive pressure inputted into the drive port; and', 'an output port; and, 'said second pressure regulating valve havingsaid second pressure regulating valve being configured to regulate the supply pressure by controlling a flow rate between the input port and the output port of the second pressure regulating valve by the valve ...

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Номер записи: 97
18-04-2019 дата публикации

COMBINED OIL AND WATER SEPARATOR IN AN AIR BRAKE DRYER

Номер: US20190111905A1
Автор: Popoff Peter, Tomchak Thomas Martin
Принадлежит:

A filter assembly for separating and removing a liquid from a compressed fluid stream includes a filter element for separating the liquid from the fluid, a purge valve, and an elongated valve operator for actuating the purge valve. The top of the filter element has a shroud that decreases the flow area of the entering fluid stream to induce a vortex of the fluid, allowing the liquid to separate from the fluid. The purge valve is located at the bottom of the filter element for draining the separated liquid. The elongated valve operator axially extends through the filter element and is moveable by an actuating piston located at the top of the filter element, in response to elevated pressure in the filter assembly. The filtered air is dried through a desiccant body and then outputted from the filter assembly to be used in an air brake system. 1. A filter assembly for separating and removing a liquid from a fluid comprising:a filter head having a fluid inlet and an actuating piston;a longitudinal filter element for separating the liquid from the fluid that has a first end in fluid communication with the fluid inlet and a second end distally opposite the first end;a purge valve at the second end of the filter element distally opposite the filter head that is biased in a closed position and moveable to an open position for draining the liquid out of the filter assembly; andan elongated valve operator that axially extends through the filter element between the first end and the second end and is configured to move the purge valve between the closed position and the open position, wherein the actuating piston is configured to move the purge valve by acting on the valve operator, in response to elevated pressure in the filter assembly.2. The filter assembly according to claim 1 , wherein the filter head includes an atmospheric reference chamber and a governor pressure chamber that are separated by the actuating piston claim 1 , wherein the actuating piston is moveable within ...

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Номер записи: 98
07-05-2015 дата публикации

Device And Method In Respect Of A Rock Drilling Machine And Rock Drilling Machine

Номер: US20150122117A1
Автор: Jonsson Per
Принадлежит: ATLAS COPCO ROCK DRILLS AB

A device for a hydraulic rock drilling machine () for the protection of a piston seal unit () for sealing between a percussive piston () and a cylinder in a housing () of the rock drilling machine, wherein a piston guide () is positioned between the piston seal unit () and a working space in the cylinder. Between the piston guide () and the piston seal unit () there is arranged a surrounding ring-shaped inwardly open chamber (), which is formed for receiving a hydraulic liquid volume. A hydraulic supply flow channel () for hydraulic liquid supply is connected to said chamber (). The invention also concerns a rock drilling machine and a method. 116425. Device for a hydraulic rock drilling machine () for the protection of a piston seal unit () for sealing between a percussive piston () and a cylinder in a housing () of the rock drilling machine , wherein a piston guide () is{'b': '6', 'positioned between the piston seal unit () and a working space in the cylinder, wherein'}{'b': 5', '6', '9, 'between the piston guide () and the piston seal unit () there is arranged a surrounding ring-shaped inwardly open chamber (), which is formed for receiving a hydraulic liquid volume, and'}{'b': 12', '13', '9, 'a hydraulic supply flow channel (,) for hydraulic liquid supply is connected to said chamber ().'}21213. Device according to claim 1 , wherein said hydraulic supply flow channel ( claim 1 ,) is arranged to start from any one of the group: a return flow channel from a hydraulic percussive damping arrangement in the rock drilling machine claim 1 , an adjustable constant flow source.366. Device according to claim 1 , wherein the piston seal unit () is supported by a seal holder (′) in which said chamber is received.461011. Device according to claim 1 , wherein the piston seal unit () provides two sealing devices ( claim 1 ,) which are arranged at an axial distance from each other.5. Device according to claim 1 , wherein{'b': 9', '14', '13, 'said chamber () connects to an ...

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Номер записи: 99
18-04-2019 дата публикации

TEMPERATURE RESPONSIVE HYDRAULIC DERATE

Номер: US20190112787A1
Автор: Cadman Kristen D., Hunold Brent M., Wyand Cory D.
Принадлежит:

A work machine includes a mechanical arm and a hydraulic actuator coupled to the mechanical arm to move the arm between a first position and a second position. A valve is in fluid communication with the hydraulic actuator for supplying fluid to the hydraulic actuator. A pump is configured to discharge fluid to the valve. An engine is operatively connected to the pump. A coolant system is in thermal communication with the engine and includes a temperature sensor. A controller is in communication with the pump and the temperature sensor. The controller is configured to transmit a control signal to the pump to modify a flowrate of the pump and to adjust the flowrate of the pump in response to a signal from the temperature sensor that a temperature is at or above a set temperature value. 1. A work machine comprising:a mechanical arm;a hydraulic actuator coupled to the mechanical arm to move the arm between a first position and a second position;a valve in fluid communication with the hydraulic actuator for supplying fluid to the hydraulic actuator;a pump configured to discharge fluid to the valve;an engine operatively connected to the pump;a coolant system in thermal communication with the engine and including a temperature sensor; anda controller in communication with the pump and the temperature sensor,wherein the controller is configured to transmit a control signal to the pump to modify a flowrate of the pump, and wherein the controller is configured to adjust the flowrate of the pump in response to a signal from the temperature sensor that a temperature is at or above a set temperature value.2. The machine of claim 1 , wherein the controller is configured to adjust the flowrate of the pump a first amount at the set temperature and to adjust the flowrate of the pump a second amount above the set temperature.3. The machine of claim 2 , wherein the first amount is approximately 1 percent of the flowrate and the second amount is between approximately 2 percent and ...

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Номер записи: 100