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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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Форма поиска

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 3447. Отображено 100.
12-04-2012 дата публикации

Scroll Fluid Machine

Номер: US20120087818A1
Автор: Jiro Iizuka, Kiyoshi Terauchi
Принадлежит: Sanden Corp

Disclosed is a scroll fluid machine configured from inexpensive materials and provided with a rotation prevention mechanism with excellent durability. In the scroll fluid machine, a fixed scroll, the spiral body of which has been vertically disposed on one end surface of an endplate, and a movable scroll, the spiral body of which has been vertically disposed on one end surface of the endplate, are arranged eccentrically to and out of phase with each other such that the spiral bodies engage with each other and the movable scroll turns relative to the fixed scroll. The scroll fluid machine is characterized by being provided with a rotation prevention mechanism comprising a movable-side pin that protrudes from the other surface of the endplate of the movable scroll, a fixed-side pin that protrudes from the housing side towards the other surface of the endplate of the movable scroll, and a rotation prevention member held from both sides by the movable-side pin and the fixed-side pin.

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Номер записи: 1
07-06-2012 дата публикации

Gear root geometry for increased carryover volume

Номер: US20120141316A1
Автор: David L. Wakefield, Weishun Ni
Принадлежит: Hamilton Sundstrand Corp

A gear includes a gear root defined by a stretched root blended into an involute tooth profile curve within a True Involute Form diameter.

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Номер записи: 2
11-10-2012 дата публикации

External Gear Pump for Hot Cooking Oil

Номер: US20120258006A1
Автор: Joshua Gerbig, Scott Meyer, William E. Allen, Jr.
Принадлежит: Viking Pump Inc

An overhung external spur gear positive displacement pump for hot oil or deep fryer applications is disclosed. The external gear pump includes a casing that includes a through bore for accommodating a drive shaft that leads to a pump chamber that accommodates a drive gear and a driven gear. The casing further includes a recess connected to the pump chamber for accommodating a stationary pin. The casing also includes a proximal end coupled to a prime mover and a distal end coupled to a head. The gears are enclosed in the pump chamber by the head. The stationary pin is accommodated within the driven gear and the drive shaft is coupled to the drive gear. The head is provided in the form of a flat plate with a plurality of holes for accommodating fasteners that couple the head to the distal end of the casing.

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Номер записи: 3
07-02-2013 дата публикации

Fluid Energy Transfer Device

Номер: US20130034462A1
Автор: George A. Yarr
Принадлежит: ENER-G-ROTORS Inc

A rotary chambered fluid energy-transfer device includes a housing with a central portion having a bore formed therein and an end plate forming an arcuate inlet passage, with a radial height and a circumferential extent. The device also includes an outer rotor rotatable in the central portion bore with a female gear profile formed in a radial portion defining a plurality of roots and an inner rotor with a male gear profile defining a plurality of lobes in operative engagement with the outer rotor. A minimum radial distance between an outer rotor root and a corresponding inner rotor lobe define a duct end face proximate the end plate, wherein the duct end face has a radial height substantially equivalent to the inlet passage radial height at a leading edge of the inlet passage.

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Номер записи: 4
11-04-2013 дата публикации

Variable Capacity Vane Pump with Dual Control Chambers

Номер: US20130089446A1
Автор: Shulver David R., Williamson Matthew
Принадлежит: TESMA INTERNATIONAL INC.

A variable capacity vane includes a pump control ring which is moveable to alter the capacity of the pump and the pump can be operated at either of at least two selected equilibrium pressures. The pump ring is moved by at least first and second control chambers, the control chambers abutting the control ring such that pressurized fluid supplied to them acts on the pump control ring to move the pump control ring to reduce the volumetric capacity of the pump. When pressurized fluid is supplied to only one control chamber, the pump operates at a first equilibrium pressure and when pressurized fluid is also supplied to the second chamber, the pump operates at a second equilibrium pressure. Pressurized fluid can also be supplied only to the second control chamber to operate the pump at a third equilibrium pressure and/or additional control chambers can be provided if required. 1. A variable capacity vane pump comprising:a pump casing including a pump chamber;a pump control ring moveable within the pump chamber to vary the volumetric capacity of the pump;a vane pump rotor positioned within the pump control ring and being rotatable about an axis offset from a center of the pump control ring;vanes being driven by the rotor and engaging an inside surface of the pump control ring;a first control chamber between the pump casing and a first portion of the pump control ring, the first control chamber operable to receive pressurized fluid to create a force to move the pump control ring to reduce the volumetric capacity of the pump, the first portion of the pump control ring circumferentially extending from the pivot pin;a second control chamber between the pump casing and a second portion of the pump control ring, the second control chamber operable to receive pressurized fluid to create a force to move the pump control ring to reduce the volumetric capacity of the pump, the first and second portions of the pump control ring being adjacent to one another and separated by a ...

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Номер записи: 5
11-04-2013 дата публикации

VEHICULAR INTERNAL GEAR TYPE OIL PUMP

Номер: US20130089453A1
Автор: Hattori Masashi, Ito Masahiro, Mizuno Yoshihiro, Mori Kenichi, Ogata Yusuke, Okoshi Naoki, Shibata Haruhiko, Suzuki Fumitake, Suzuki Masahiko, Yamaguchi Hidenobu
Принадлежит:

An oil pump includes a first spill passage formed on a side surface () of a pump chamber () to communicate a hydraulic pressure chamber () with a first high pressure discharge passage () when the entire hydraulic pressure chamber () is positioned between the first high pressure discharge passage () and a first low pressure discharge passage (). Therefore, when the hydraulic pressure chamber () passes between the first high pressure discharge passage () and the first low pressure discharge passage (), the hydraulic pressure inside the predetermined hydraulic pressure chamber () escapes to the first high pressure discharge passage () through a first spill passage (), so a hydraulic pressure value inside the hydraulic pressure chamber () is maintained at the pressure value inside the first high pressure discharge passage (). As a result, fluid is inhibited from flowing into the hydraulic pressure chamber () from the first high pressure discharge passage () through a space between inner peripheral teeth () and outer peripheral teeth (). 1. A vehicular internal gear type oil pump including:a drive gear that has outer peripheral teeth and that is provided rotatable about an axis;an annular driven gear that has inner peripheral teeth that mesh with the outer peripheral teeth of the drive gear and that is provided rotatable about an offset axis that is offset from the axis, and that is rotatably driven by the drive gear;a pump chamber inside of which the driven gear and the drive gear are housed; anda housing that has a high pressure discharge passage and a low pressure discharge passage that are open, a predetermined distance apart from each other in a circumferential direction, to a side surface of the pump chamber, in order to discharge fluid from within the pump chamber,wherein a plurality of hydraulic pressure chambers, that are formed in the circumferential direction by a mesh gap between the inner peripheral teeth and the outer peripheral teeth, move in a ...

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Номер записи: 6
23-05-2013 дата публикации

Scroll-Type Fluid Machine

Номер: US20130129550A1
Автор: Hirawatari Sueji, Ijiri Makoto, Kudo Takayuki
Принадлежит:

A scroll-type fluid machine in which: a fixed scroll and a moveable scroll are disposed in a housing; a fluid pocket, the volume of which varies, is formed between the fixed scroll and the moveable scroll; and a thrust plate for receiving the reaction force in the axial direction of pressure applied within the fluid pocket is disposed between the bottom plate of the moveable scroll and the housing. The scroll-type fluid machine is characterized in that at least the surface of the thrust plate facing the bottom plate of the moveable scroll is subjected to tin plating. As a consequence, it is possible to efficiently produce, at a low cost, a thrust bearing which is disposed between the bottom plate of the moveable scroll and the housing, exerts excellent seizure resistance, and has a high PV limit level and a low friction coefficient. 1. A scroll-type fluid machine in which a fixed scroll and a movable scroll to revolve around the fixed scroll as being prevented from rotating are provided to a housing , a fluid pocket having a variable volume is provided between the fixed scroll and the movable scroll , and a thrust plate to bear an axial reaction force of a pressure applied into the fluid pocket is provided between a bottom plate of the movable scroll and the housing , characterized in that at least a surface of the thrust plate facing the bottom plate of the movable scroll is plated with tin-based metal.2. The scroll-type fluid machine according to claim 1 , wherein the thrust plate is made of iron-based steel plate claim 1 , cast metal or light metal.3. The scroll-type fluid machine according to claim 1 , wherein the thrust plate is provided with a base layer plated with the tin-based metal.4. The scroll-type fluid machine according to claim 3 , wherein the base layer is a nickel plating or a copper plating.6. The scroll-type fluid machine according to claim 1 , wherein the tin-based metal to be plated with has a thickness of 1-15 μm.7. The scroll-type fluid ...

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Номер записи: 7
30-05-2013 дата публикации

SCREW TYPE PUMP OR MOTOR

Номер: US20130136639A1
Автор: Simpson Alastair
Принадлежит: HIVIS PUMPS AS

A pump assembly comprising a stator and a rotor having vanes of opposite handed thread arrangements is described. A radial gap is located between the stator vanes and the rotor vanes such that rotation of the rotor causes the stator and rotor to co-operate to provide a system for moving fluid longitudinally between them. The operation of the pump results in a fluid seal being is formed across the radial gap. The described apparatus can also be operated as a motor assembly when a fluid is directed to move longitudinally between the stator and rotor. The presence of the fluid seal results in no deterioration of the pump or motor efficiency, even when the radial gap is significantly greater than normal working clearance values. Furthermore, the presence of the radial gap makes the pump/motor assembly ideal for deployment with high viscosity and/or multiphase fluids. 1. A pump assembly comprising a stator and a rotor , each one being provided with one or more vanes having an opposite handed thread with respect to the thread of the one or more vanes on the other , the stator and rotor co-operating to provide , on rotation of the rotor , a system for moving a fluid longitudinally between them , wherein a radial gap in the range of 1.28 mm to 10 mm is located between the one or more stator vanes and the one or more rotor vanes , and a ratio of a height one of the one or more rotor vanes to a height of the one or more stator vanes is in the range if 1.1 to 20 along the length of the pump assembly.25-. (canceled)6. A pump assembly as claimed in wherein the size of the radial gap is configured to increase or decrease along the length of the assembly.7. A pump assembly as claimed in wherein the rotor vanes are arranged on an external surface of the rotor so as to form one or more rotor channels.8. A pump assembly as claimed in wherein a ratio of the volume to cross sectional area of the rotor channels is equal to claim 7 , or greater than claim 7 , 200 mm.9. A pump assembly as ...

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Номер записи: 8
01-08-2013 дата публикации

DESYNCHRONIZED COUPLING OF A HYDRAULIC MACHINE

Номер: US20130195704A1
Автор: LAMBEY Julien, PRIGENT André
Принадлежит: POCLAIN HYDRAULICS INDUSTRIE

The present invention relates to a hydraulic circuit including: 23458921222. The circuit according to claim 1 , also including a reservoir () at ambient pressure claim 1 , wherein said connection means ( claim 1 , claim 1 , claim 1 , ) include at least one selector valve designed to selectively connect said intake () and discharge () ports of said hydraulic machine ()to the high pressure (HP) and low pressure (BP) lines,{'b': '3', 'to the reservoir ().'}32458949212222. The circuit according to one of or claim 1 , wherein said hydraulic machine () is a radial piston hydraulic machine claim 1 , and said sequential connection means ( claim 1 , claim 1 , claim 1 , ) include at least one distributor ( claim 1 , ) designed for claim 1 , during a first movement claim 1 , connecting the intake () of said hydraulic machine () to the high pressure line (HP) and claim 1 , during a second movement claim 1 , to connect the discharge () of said hydraulic machine () to the low pressure line (BP).4458921222. The circuit according to claim 3 , also including a control line (PP) claim 3 , the pressure whereof is lower than the pressure in the low pressure line (BP) claim 3 , and wherein the connection means ( claim 3 , claim 3 , claim 3 , ) are also designed to selectively connect said ports ( claim 3 , ) of said hydraulic machine () to the control line (PP).745. The circuit according to one of or claim 3 , wherein said connection means of the hydraulic machine include a first () and a second () distributor claim 3 ,{'b': 4', '21', '2', '3', '21', '2', '8, 'said first distributor () being designed for, in a first configuration, connecting the intake () of the hydraulic machine () to a reservoir () at ambient pressure and, in a second configuration, for connecting the intake () of the hydraulic machine () to the intake distributor (),'}{'b': 5', '22', '2', '3', '22', '2', '8, 'said second distributor () being designed for, in a first configuration, connecting the discharge () of the ...

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Номер записи: 9
08-08-2013 дата публикации

Oval Chamber Vane Pump

Номер: US20130202468A1
Автор: Masse Andrew, Patterson Dan
Принадлежит: WindTrans Systems Ltd

A rotary device for use with a fluid, having a housing, a rotor, and a vane having a respectively associated wiper. The housing has a tubular surface defining in part a tubular volume, the tubular volume segregated into at least a pumping zone and a working zone. The rotor is mounted for rotation and has a body mounted within the tubular volume and a plurality of slots. Each slot extends at least generally radially from the axis. Each vane is mounted at least partially within each slot. As the rotor rotates, each vane rotates within the tubular volume and extends and retracts within the tubular volume. The wiper contacts the tubular volume of the housing while the respectively associated vane rotates through the pumping zone, and wherein the wiper does not contact the tubular volume of the housing while the respectively associated vane rotates through the working zone. 1. A rotary device for use with a fluid , the device comprising:a housing having a tubular surface defining in part a tubular volume, the tubular volume segregated into at least a pumping zone and a working zone;a rotor mounted for rotation about a rotation axis, the rotor having a body mounted within the tubular surface and having a plurality of slots, each slot extending at least generally radially from the axis; anda vane mounted at least partially within each slot, as the rotor rotates, each vane rotates within the tubular volume and extends and retracts within the tubular volume, each vane having a respectively associated wiper disposed on an end of the vane;wherein the wiper contacts the tubular surface of the housing while the respectively associated vane rotates through the pumping zone, and wherein the wiper does not contact the tubular surface of the housing while the respectively associated vane rotates through the working zone.2. The rotary device of claim 1 , wherein as each vane approaches the pumping zone a wiper distance claim 1 , being the distance from a wiper to the tubular surface ...

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Номер записи: 10
08-08-2013 дата публикации

Rotary Vane Air Motor with Improved Vanes and Other Improvements

Номер: US20130202470A1
Автор: Cox Daniel S., Liang Davey Z.
Принадлежит: Shining Golden Yida Welding & Cutting Machinery Manufacture Ltd.

A rotary vane air motor comprises a rotor, stator and vanes. The rotor has slots for the vanes, and the vanes may move between a retracted position and a contact position in which the vanes contact the cylinder. Each vane may have a longitudinal portion whose shape conforms generally to the slot, and a transverse portion that is radially outside of the slot and extends at least in part in a direction that is transverse to the longitudinal portion and that may be tangential to the perimeter of the rotor at the slot. The shape of the perimeter may be a polygon with rounded corners. The vanes may also include a magnetic portion or a rotating portion. 1. A pneumatic motor comprising:a stator;a rotor disposed such as to define a gap between the rotor and the stator, and disposed for rotation with respect to the stator, the rotor having openings extending in a radial direction of the rotor; anda plurality of vanes disposed in the openings, respectively, each of the vanes being moveable in the radial direction within the respective opening thereof between a contact position, wherein the vane contacts the stator, and a non-contact position, wherein the vane does not contact the stator,wherein the rotor is configured for rotation with respect to the stator by air flow against the vanes, andwherein each of the vanes includes a portion that is permanently located in the gap and does not retract into the respective opening thereof.2. A pneumatic motor according to claim 1 ,wherein each opening extends in a radial direction of the rotor, an axial direction of the rotor, and an orthogonal direction, the orthogonal direction being orthogonal to the radial direction and to the axial direction, andwherein, for each of the vanes, the portion that is permanently located in the gap and does not retract into the respective opening thereof has an extent in the orthogonal direction different from an extent in the orthogonal direction of a portion of the vane that is not permanently ...

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Номер записи: 11
26-09-2013 дата публикации

Variable Displacement Variable Pressure Vane Pump System

Номер: US20130251570A1
Автор: Shulver David R., Tanasuca Cezar
Принадлежит: MAGNA POWERTRAIN INC.

A variable displacement variable pressure vane pump system provides lubrication oil to a mechanical system. The system has a first control mechanism, which can be a control chamber directly acting on the control slider or a control chamber and control cylinder which acts on the control slider and a second control mechanism which is a control chamber and control cylinder which acts on the control slider. A control valve, operated by an engine control unit or other suitable control mechanism, selectively provides pressurized lubrication oil to the second control mechanism to allow the output of the pump system to more closely match the requirements of the mechanical system. 1. A variable displacement variable pressure vane pump system for providing lubrication oil to a mechanical system comprises:a variable displacement variable pressure vane pump having a control slider which is moveable to alter the displacement of the pump;a biasing means to bias the control slider towards a position corresponding to the maximum displacement position of the pump;a first control mechanism responsive to the pressure of the lubrication oil output from the pump to apply a force to the control slider to counter the biasing force of the biasing means and to urge the control slider away from the position corresponding to the maximum displacement position of the pump;a second control mechanism responsive to the pressure of the lubrication oil output from the pump to apply a force to the control slider to alter the displacement of the pump; anda control means operable to vary the lubrication oil supplied to the second control mechanism to alter the output of the pump to more closely correspond to the lubrication requirements of the mechanical system.2. The variable displacement variable pressure pump system of wherein the first control mechanism comprises a control chamber formed between the exterior of the control slider claim 1 , a control slider seal claim 1 , a control slider pivot ...

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Номер записи: 12
26-09-2013 дата публикации

IDAR-ACE INVERSE DISPLACEMENT ASYMMETRIC ROTATING ALTERNATIVE CORE ENGINE

Номер: US20130251579A1
Автор: Anderson William, Lukaczyk Trent, Lukaczyk William
Принадлежит: Lumenium LLC

The disclosure provides engines or pumps that includes a rotatable shaft defining a central axis A, the shaft having a first end and a second end. The shaft can have an elongate first island disposed thereon. The first island can have a body with a volume generally defined between front and rear surfaces that are spaced apart. The front and rear surfaces can lie in a plane parallel to a radial axis R. The perimeters of the front and rear surfaces can define a curved perimeter surface therebetween. The engine or pump can further include a front side plate disposed adjacent to the front surface of the first island, and a rear side plate disposed adjacent to the rear surface of the first island. The engine or pump also includes a first contour assembly disposed between the front side plate and the rear side plate. 1. An engine or pump , comprising:a) a rotatable shaft defining a central axis A, the shaft having a first end and a second end, the shaft having an elongate first island disposed thereon, the first island having a body with a volume generally defined between front and rear surfaces that are spaced apart along the rotatable shaft, the front and rear surfaces lying in a plane parallel to a radial axis R, the front and rear surfaces having a rounded, non-circular shape, the perimeters of the front and rear surfaces defining a curved perimeter surface therebetween;b) a front side plate disposed adjacent to the front surface of the first island;c) a rear side plate disposed adjacent to the rear surface of the first island; andd) a first contour assembly disposed between the front side plate and the rear side plate, the first contour assembly being defined by a pair of opposed outwardly facing arcuately shaped front and rear surfaces that are connected by a concave inwardly facing surface, the concave inwardly facing surface of the contour assembly facing the curved perimeter surface of the first island, the concave inwardly facing surface and the curved perimeter ...

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Номер записи: 13
21-11-2013 дата публикации

Multiple Stage Passive Variable Displacement Vane Pump

Номер: US20130309113A1
Автор: Rago Guiseppe
Принадлежит:

The present invention is a multiple stage variable displacement vane pump comprising a pressure regulating spring guide. A first spring and a second spring may be controlled by said pressure regulating spring guide. The present invention does not require a solenoid or electronic control. Control of flow and speed is achieved through operable of the pressure regulating spring guide that causes the first spring and second spring to be operable in relation to one another, but for the first spring and the second spring to be operable independently of each other. The springs may be positioned to be inline in relation to each other. Rotation of a slide and pressure exerted thereby upon the pressure regulating spring guide may create a first spring regulation stage and a second spring regulation stage. 1. A multiple stage variable displacement vane pump comprising:a rotor including a plurality of vanes slidably extending radially from the rotor;a. a pump housing defining a pump inlet, a pump outlet and a rotor chamber receiving the rotor and including an inlet port in communication with the pump inlet and through which working fluid is introduced to the rotor and an outlet port through which working fluid exits the rotor to the pump outlet, the outlet port being connected to the pump outlet via a passage;b. a cam ring encircling the rotor, the ends of the vanes of the rotor engaging an inner surface of the cam ring to form variable volume pump chambers between adjacent vanes, the rotor and the cam ring, the cam ring being pivotable within the rotor chamber about a pivot point to alter the eccentricity of the cam ring with respect to the rotor to change the displacement of the pump, said cam ring having a slide incorporated therein;c. a pressure regulating spring guide operable to control two or more springs, said two or more springs being positioned inline to each other and in proximity to the pressure regulating spring guide, said pressure regulating guide being operable ...

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Номер записи: 14
28-11-2013 дата публикации

Three stage scroll vacuum pump

Номер: US20130315765A1
Автор: Shaffer Robert W.
Принадлежит:

A three stage vacuum pump has three stages of fixed scrolls and orbiting scrolls that operate simultaneously. A motor drives the second orbiting scroll within the third fixed scroll upon three equally spaced idlers. One idler then transmits rotation and torque into the second stage. The second orbiting scroll has involutes upon both surfaces to engage the second fixed scroll inwardly and the first fixed scroll outwardly. The first fixed scroll has fins upon its back that extend into the atmosphere to transfer heat to air cool the pump. This pump also has a fan accelerating heat transfer. The pump operates the scrolls directly from a motor or from a motor and magnetic coupling so that the atmosphere does not infiltrate the pump. 1. A three stage vacuum pump for producing a vacuum comprising:a first stage having a first fixed scroll having a fixed cooling plate connected thereto and a first orbiting scroll having a orbiting cooling plate connected thereto, said first fixed scroll communicating to a space selected for evacuation, said first orbiting scroll having an inner face and an opposite outer face, said outer face of said first orbiting scroll meshing with said first fixed scroll;a second stage adjacent to said first stage inwardly, said second stage in gaseous communication to said first stage, said second stage having a second fixed scroll, said second fixed scroll meshing with said inner face of said first orbiting scroll;a third stage spaced inwardly of said second stage, said third stage in gaseous communication to said second stage, said third stage having a third fixed scroll and a second orbiting scroll, said second orbiting scroll meshing with said third fixed scroll;a driving pin journaled to say second orbiting scroll opposite said third fixed scroll;a motor operatively connected to said driving pin, said motor imparting rotation to said driving pin, said motor being generally opposite said first fixed scroll and outwardly of said second orbiting ...

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Номер записи: 15
12-12-2013 дата публикации

METHOD FOR PRODUCING THE TOOTH SHAPE OF THE INNER AND OUTER RING OF AN ANNULAR GEAR MACHINE AND TOOTHED RING PRODUCED BY MEANS OF SAID METHOD

Номер: US20130330222A1
Автор: BLECHSCHMIDT Andreas
Принадлежит: GERATE-UND PUMPENBAU GMBH DR. EUGEN SCHMIDT

In producing tooth shapes of two toothed rings of an annular gear machine, a starting geometry of a first toothed ring, at least one quality criterion of the annular gear machine, and a desired eccentricity between rotational axes of the two toothed rings are defined. A motion is performed with the starting geometry that performs a rotational motion about its rotational axis and a revolving motion about the rotational axis of the second toothed ring. The rotational and revolving motions are coupled so the rotational angle of the eccentricity equals the product of the rotational angle and tooth count of the first toothed ring. A tooth shape contour of the second toothed ring is generated by recording the path described by the envelope of the starting geometry. If the defined quality criterion is not met, the previously used starting geometry and/or the defined eccentricity is changed and steps are repeated. 1. A method for forming the tooth shape of a first and a second annular gear of an annular gear machine , comprising the following steps:a) establishing a starting geometry of the first annular gear, the inner or outer ring of the annular gear machine, at least one quality criterion of the annular gear machine as well as a desired eccentricity (e) between the rotation axes (A, B) of the two annular gears;b) performing a movement with the starting geometry established, wherein the starting geometry performs a rotational movement about its own rotational axis (B) and at the same time a revolving movement about the rotational axis (A) of the second annular gear, and wherein this rotational movement and this revolving movement are interrelated such that the angle of rotation (b) of the eccentricity (e) is continuously equal to the product of the angle of rotation (a) of the first annular gear and the number of teeth (Z) of the first annular gear (b=a×Z);c) generating the tooth shape contour of the second annular gear by plotting the path described by the envelope ...

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Номер записи: 16
12-12-2013 дата публикации

MULTI-CLUSTER GEAR DEVICE

Номер: US20130330224A1
Автор: CANNATA Antonio, Greco Mark, Strasser Reini
Принадлежит: TONAND BRAKES INC.

A multi-cluster gear device operable to function as a pump, a motor or operable to alternate between a pump and a motor. 1. A multi cluster gear device comprising:a shaft rotatable about a longitudinal axis;a primary gear mounted on the shaft;at least two secondary gears spaced about and positioned to engage with the primary gear;each of the at least two secondary gears configured to independently receive fluid from a fluid reservoir and to allow flow of a portion of the fluid about the secondary gear and to allow the remaining portion of the fluid to be carried by the primary gear to the adjacent secondary gear.2. A multi cluster gear device comprising:a primary gear;at least two secondary gears spaced about and positioned to engage with the primary gear;each of the at least two secondary gears configured to independently receive fluid from a fluid reservoir and to allow flow of a portion of the fluid about the secondary gear and to allow the remaining portion of the fluid to be carried by the primary gear to the adjacent secondary gear.3. The multi cluster gear device according to claim 2 , wherein the at least two secondary gears are smaller than the primary gear.4. The multi cluster gear device according to claim 2 , wherein the at least two secondary gears are spaced evenly about the periphery of the primary gear.5. The multi cluster gear device according to claim 2 , wherein approximately 50% of the fluid received by each of the at least two secondary gears flows around respective secondary gears and the remaining fluid portion is carried to the adjacent secondary gear.6. The multi cluster gear device according to claim 2 , wherein the each of the secondary gears discharges approximately half of the total volume of fluid received claim 2 , such that each of the secondary gears is associated with an input port and an output port claim 2 , providing for a pair of ports per said each of the secondary gears.7. The multi cluster gear device according to claim 6 , ...

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Номер записи: 17
09-01-2014 дата публикации

Polyetherimide pump

Номер: US20140010697A1
Автор: Peter Haug
Принадлежит: SABIC INNOVATIVE PLASTICS IP BV

A positive displacement pump and methods of making a positive displacement pump having a component, the component having a density ranging from more than 0 to 3 g/cm 3 , a glass transition temperature (Tg) greater than or equal to 150° C., and a yield strength retention greater than 90% after soaking in engine oil for 7 days at 150° C.

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Номер записи: 18
27-02-2014 дата публикации

SCROLL COMPRESSION DEVICE

Номер: US20140056736A1
Автор: Aida Kenji, Akuzawa Katsuki, Hayashi Akihiro, Iitsuka Satoshi, Kiyokawa Yasunori, Kon Tsutomu, Nagasawa Yoshiaki, Nagase Yoshihiko, Sugimoto Kazuyoshi
Принадлежит: SANYO ELECTRIC CO., LTD.

A scroll compression mechanism for compressing refrigerant and a driving motor that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing the scroll compression mechanism is supported in the casing by a main frame a stator of the driving motor is directly or indirectly supported in the casing and the driving shaft is connected to a rotor of the driving motor and supported in the casing by a bearing plate and a lower end of the driving shaft is supported by a thrust plate provided to the bearing plate and the center position of the rotor is located to be lower than the center position of the stator 1. A scroll compression device , characterized in that:a scroll compression mechanism for compressing refrigerant and a. driving motor that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing;the scroll compression mechanism is supported in the casing by a main frame;a stator of the driving motor is directly or indirectly supported in the casing;the driving shaft is connected to a rotor of the driving motor and supported in the casing by a healing plate, and a lower end of the driving shaft is supported by a thrust plate provided to the bearing plate; andthe center position of the rotor is located to be lower than the center position of the stator.2. The scroll compression device according to claim 1 , wherein the center position of the rotor is located to be lower than the center position of the stator in such a range that the rotor does not jump up when the driving motor is started.3. The scroll compression device according to claim 1 , wherein the center position of the rotor is coincident with the center position of the stator and upward force acts on the rotor during operation.4. The scroll compression device according to claim 1 , wherein the center position of the rotor is located to ...

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Номер записи: 19
27-02-2014 дата публикации

Rotational clap suction/pressure device

Номер: US20140056747A1
Автор: Jong-Mun Kim
Принадлежит: Individual

The present invention relates to a simple and straightforward positive displacement suction/pressure device (rotational clap suction/pressure device) for utilizing in general industrial flow machines, such as various positive displacement pumps, vacuum pumps, compressors, flow meters, and rotary internal combustion engines. The object of the present invention using a double non-uniform rotation is to provide a simple and durable mechanical device having improved efficiency, by replacing the existing linear contact between various types of rotors or between a rotor and a housing, which is a problem in existing positive displacement flow machines and rotary internal combustion engines, with a whole surface.

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Номер записи: 20
20-03-2014 дата публикации

ROTOR FOR PUMP

Номер: US20140079581A1
Автор: Dowdeswell Stephen, Schofield Nigel Paul
Принадлежит: EDWARDS LIMITED

The present invention relates to a rotor for a vacuum pump having a roots pumping mechanism, the rotor comprising at least two hollow lobes, each lobe having an outer wall which defines a lobe profile, a hollow cavity generally inward of the outer wall, and at least one strengthening rib located in the cavity to resist stress on the lobes generated during rotation. 1. A vacuum pump rotor for use in a vacuum pump having a roots pumping mechanism , the rotor comprising at least two hollow lobes , each respective hollow lobe comprising:a respective outer wall which defines a lobe profile,a respective hollow cavity generally inward of the respective outer wall, andat least one respective strengthening rib located in the respective hollow cavity to resist stress on the respective hollow lobe generated during rotation.2. The rotor of claim 1 , wherein the at least one respective strengthening rib extends around an interior wall of the respective hollow lobe.3. The rotor of claim 1 , wherein the at least one respective strengthening rib has a varying extent and is distributed within the respective hollow cavity dependent on the varying stresses applied to the respective hollow lobe in use.4. The rotor of claim 1 , wherein the respective outer wall has a varying thickness and is thicker at a radially inner portion than at a lobe tip.5. The rotor of claim 1 , wherein the respective outer wall defines a thickness such that the respective hollow lobe deforms under centrifugal loading when the rotor is rotated in use and the deformation is greater than manufacturing tolerances.6. The rotor of claim 5 , wherein the respective hollow lobe defines a first configuration in a first condition in which the rotor is rotated in use and a second condition when the rotor is not rotated and the respective hollow lobe is not in the first configuration claim 5 , and wherein the respective hollow lobe deforms from the second condition to the first condition when tip speed of the respective ...

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Номер записи: 21
06-01-2022 дата публикации

Rotary Piston Machine and Method for Producing a Seal in a Rotary Piston Machine

Номер: US20220003117A1
Автор: Bombardi Jakob, Bungart Merlin
Принадлежит:

A rotary piston engine and a method for manufacturing a sealing in a rotary piston engine are described. The rotary piston engine has at least two piston pairs respectively connected via a link, the pistons of which are arranged at opposite ends of the links and, during operation, circulate on an at least approximately circular path in a piston housing, such that varying working volumes are enclosed between the pistons of different piston pairs during the circulation and that, via a sealing provided between the piston housing and the pistons, a fluid flow between the enclosed working volumes is at least impeded. The technical solution described is characterized in that the sealing is formed by a gap between the pistons and the piston housing and surfaces of the pistons and the piston housing delimiting the gap at least at times are irregularly structured. 120.-. (canceled)21124345732653. A rotary piston engine () with at least two piston pairs () respectively connected via a link () , the pistons () of which are arranged at opposite ends of the links () and , during operation , circulate on an at least approximately circular path in a piston housing () , such that varying working volumes () are enclosed between the pistons () of different piston pairs () during the circulation , and with a sealing () provided between the piston housing () and the pistons () , which at least impedes a fluid flow between the enclosed working volumes ,{'b': 6', '8', '3', '5', '8', '9', '10', '3', '5', '8, 'characterized in that the sealing () is formed by a gap () between the pistons () and the piston housing (), in which no sealing elements are arranged, and that the gap () is designed such that leakage flows between neighboring working spaces are minimized, wherein surfaces (, ) of the pistons () and of the piston housing () delimiting the gap () at least at times have a surface structure generated directly upon commissioning by means of a running-in or grinding-in, resp., process.'} ...

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Номер записи: 22
04-01-2018 дата публикации

INTERNAL GEAR PUMP

Номер: US20180003173A1
Автор: CHENOUX MATHIEU, Cornet Albert
Принадлежит: SAFRAN AERO BOOSTERS S.A.

An internal gear pump includes a pinion, a ring arranged around the pinion, and a cylindrical wall arranged around the ring. A support element, on which the pinion and the ring are supported, carries high-pressure liquid towards a recess located at the junction between the ring and the cylindrical wall, and also carries low-pressure liquid towards another recess located at another point of the junction between the ring and the cylindrical wall. The recess allows the load of the ring on the cylindrical wall to be reduced. 1. An internal gear pump comprising:a pinion capable of rotating about a first axis of rotation;a ring arranged around the pinion, having a cylindrical periphery and being configured to rotate about a second axis of rotation that is different to the first axis of rotation and parallel thereto, the pinion and the ring being arranged to delimit a work space comprising a high-pressure space and a low-pressure space;a first support element arranged on a first side of the ring to limit the movement thereof in a first sense along a first orientation that is substantially parallel to the first and second axes of rotation;a second support element arranged on a second side of the ring to limit the movement thereof in a second sense that is opposite the first sense and in the first orientation;a cylindrical wall arranged around the ring to limit the movement thereof in a plane that is substantially perpendicular to the second axis of rotation;a first high-pressure recess in an arc of a circle and in fluid contact with a first portion of the cylindrical periphery of the ring;a first low-pressure recess in an arc of a circle and in fluid contact with a second portion of the cylindrical periphery of the ring, the first high-pressure recess and the first low-pressure recess being separated;a first high-pressure conveying means forming a fluid connection between the high-pressure space and the first high-pressure recess; anda first low-pressure conveying means ...

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Номер записи: 23
07-01-2021 дата публикации

HYDRAULIC MOTOR SUBASSEMBLY KIT WITH CARRIER

Номер: US20210003128A1
Автор: CORNETT Kenneth T., CROSBY Michael T., KING Timothy E., PAINTER Brian T.
Принадлежит:

A carrier for a motor subassembly of a hydraulic motor is provided that enables multiple components of the motor subassembly to be temporarily bundled into a compact and easy-to-transport motor subassembly kit. The carrier is a non-hydraulically-functioning member that is configured to have one or more features that mimic a corresponding one or more features of a hydraulically-functioning motor housing to which motor subassembly is intended to be coupled for forming the hydraulic motor. The carrier may have a body with a recessed portion that is configured to receive and/or enclose one or more components of the motor subassembly, and which may cooperate with the one or more motor subassembly components to temporarily secure and bundle the motor subassembly as a compact kit, thereby facilitating transportation and handling of the subassembly components. 1. A motor subassembly kit for a hydraulic motor , the kit comprising:a hydraulically-operable motor subassembly having a plurality of motor components that are configured to be operably coupled to a hydraulically-operable motor housing for at least partially forming the hydraulic motor; anda non-hydraulically-operable carrier for carrying the motor subassembly;wherein the carrier cooperates with the motor subassembly to temporarily secure the plurality of motor components of the motor subassembly as a transportable bundle, andwherein the carrier has one or more portions that mimic a corresponding one or more portions of the hydraulically-operable motor housing, thereby facilitating transportation of the plurality of motor components in the transportable bundle.2. The motor subassembly kit according to claim 1 , wherein the carrier includes a body having a nose portion claim 1 , a base portion claim 1 , and an intermediate portion extending between the nose portion and the base portion;wherein the carrier has an opening in the base portion for receiving one or more of the plurality of motor components, andwherein the ...

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Номер записи: 24
08-01-2015 дата публикации

OIL PUMP

Номер: US20150010420A1
Автор: ODA Hiroyuki
Принадлежит:

An oil pump of the present invention includes a housing () which includes an inlet port () to suck oil, a discharge port () to discharge oil, and a purge port () to eject air-mixed oil, an inner rotor () which is arranged in the housing as being rotatable about a predetermined axis line (S), an outer rotor () which is arranged in the housing to be rotated as being interlocked with the inner rotor, and a filter member () which is arranged at the housing from the outside thereof to prevent foreign matter from entering through the purge port. According to the above, entering of foreign matter and the like can be prevented even when oil is sucked through the purge port. 1. An oil pump , comprising:a housing which includes an inlet port to suck oil, a discharge port to discharge oil, and a purge port to eject air-mixed oil with air mixed;an inner rotor which is arranged in the housing as being rotatable about a predetermined axis line;an outer rotor which is arranged in the housing to be rotated as being interlocked with the inner rotor; anda filter member which is arranged at the housing from the outside thereof to prevent foreign matter from entering through the purge port.2. The oil pump according to claim 1 ,wherein the purge port is arranged at a range capable of providing communication, concurrently with the inlet port, with a pump chamber defined by the inner rotor and the outer rotor.3. The oil pump according to claim 1 ,wherein the housing includes a housing body including a concave portion for containing the inner rotor and the outer rotor, and a housing cover which is connected to the housing body to close an opening of the housing body,the purge port is formed at the housing cover, andthe filter member is attached to the housing cover from the outside.4. The oil pump according to claim 1 ,wherein the inner rotor and the outer rotor include an upstream rotor including a first inner rotor and a first outer rotor and a downstream rotor including a second inner ...

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Номер записи: 25
27-01-2022 дата публикации

ROTARY LOBE PUMP WITH INTERNAL BEARING

Номер: US20220025883A1
Автор: Ahrens Henrik, Krampe Paul
Принадлежит: VOGELSANG GMBH & CO. KG

A rotary lobe pump having a pump housing with a pump room, an inlet opening and an outlet opening, a first multi-lobe rotary piston, which is arranged in the pump room and is rotatably mounted about a first axis of rotation, a second multi-lobe rotary piston, which is arranged in the pump room and is rotatably mounted about a second axis of rotation spaced apart from the first axis of rotation and meshingly engages in the first rotary piston, wherein the first and second rotary pistons are drivable in opposite directions and are designed to generate a flow of a conveyed medium from the inlet opening through the pump room to the outlet opening by counter-rotation about the first and second axis of rotation, respectively, and a drive device, which is mechanically coupled to the rotary pistons for driving the rotary pistons. 124-. (canceled)25. A rotary lobe pump for conveying a particle-laden conveyed medium , comprising:a pump housing with a pump room;an inlet opening and an outlet opening;a first, multi-lobe rotary piston, which is arranged in the pump room and is rotatably mounted about a first axis of rotation;a second multi-lobe rotary piston, which is arranged in the pump room, and is rotatably mounted about a second axis of rotation spaced apart from the first axis of rotation and meshingly engages in the first rotary piston;wherein the first and the second rotary pistons are drivable in opposite directions and are designed to generate a flow of the conveyed medium from the inlet opening through the pump room to the outlet opening by counter-rotation about the first and second axis of rotation, respectively;a drive device arranged on one side of the pump housing, which is mechanically coupled to the rotary pistons for driving the rotary pistons;a first fixed axle body, which is arranged inside the first rotary piston and connected to the pump housing on the side of the drive device; andat least one first bearing for rotatably supporting the first rotary piston ...

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Номер записи: 26
25-01-2018 дата публикации

BI-HELICAL TOOTHED WHEEL WITH VARIABLE HELIX ANGLE AND NON-ENCAPSULATING TOOTH PROFILE FOR HYDRAULIC GEAR APPARATUSES

Номер: US20180023561A1
Автор: ROSSI MANUELE
Принадлежит:

The invention relates to a bi-helical toothed wheel () with non-encapsulating profile () for hydraulic gear apparatuses (), of the type bound to a support shaft () to form a driving or driven wheel of said hydraulic apparatus and comprising a plurality of teeth () extended with variable helix angle with continuous function in the longitudinal direction, wherein the teeth profile () keeps a shape continuity in each cross section thereof. More particularly, each tooth of the toothed wheel is longitudinally split in three zones: initial (A), central (B) and terminal (C) zones, and the central zone (B) has a variable helix angle, while the initial (A) and terminal (c) zones have a constant helix angle. The invention allows to manufacture contra-rotating rotors, having a non-encapsulating profile and a helix shape such as to suppress the angular point at the center of the rotors themselves and therefore all the problems related to their machining. 1. A bi-helical toothed wheel with non-encapsulating profile for hydraulic gear apparatuses , said bi-helical toothed wheel being bound to a support shaft to form a driving or driven wheel of said hydraulic apparatus and comprising a plurality of teeth extended with variable helix angle with continuous function in the longitudinal or axial tooth direction , wherein the teeth profile keeps a shape continuity in each cross section thereof.2. A toothed wheel according to claim 1 , wherein each tooth is longitudinally split in three zones: initial claim 1 , central and terminal zones claim 1 , where the initial and terminal zones have a symmetrical helix angle.3. A toothed wheel according to claim 1 , wherein the helix angle of the tooth is variable over the whole gear length.4. A toothed wheel according to claim 1 , wherein each cross section coincides with the front profile of the toothed wheel.5. A toothed wheel according to claim 1 , wherein the helix development has a transition point between a right-handed portion and a left- ...

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Номер записи: 27
24-01-2019 дата публикации

PUMP WITH BLEED MECHANISM FOR REDUCING CAVITATION

Номер: US20190024657A1
Автор: Borkar Kishor Ramdas, George Jubin Tom, Nyzen Robert Joseph
Принадлежит:

A gear pump assembly includes a drive gear having a plurality of circumferentially spaced teeth, and a driven gear likewise having a plurality of circumferentially spaced teeth positioned for intermeshing engagement between the drive and driven gears via the teeth. A bleed mechanism directs carryover fluid from a discharge side of a bearing dam to an inlet side of the bearing dam in order to supply the carryover fluid to a carryover volume disposed between mating drive gear teeth and driven gear teeth. The bleed mechanism including a passage communicating with at least one of (i) a gear face of the drive gear, (ii) a gear face of the driven gear; or (iii) a bottom of a gear tooth profile adjacent a root region between adjacent gear teeth. 1. A gear pump assembly comprising:a drive gear having a plurality of circumferentially spaced teeth;a driven gear having a plurality of circumferentially spaced teeth that mesh with the teeth of the drive gear whereby rotation of the drive gear results in rotation of the driven gear; anda bleed mechanism that directs carryover fluid from a first side of a bearing dam to a second side of the bearing dam in order to supply the carryover fluid to a carryover volume disposed between mating drive gear teeth and driven gear teeth, the bleed mechanism including a passage communicating with at least one of:(i) a gear face of the drive gear,(ii) a gear face of the driven gear; or(iii) a bottom of a gear tooth profile adjacent a root region between adjacent gear teeth.2. The gear pump assembly of wherein the passage includes at least one of a first passage portion extending through a tooth of the drive gear and/or driven gear.3. The gear pump assembly of wherein the first passage portion extends in a direction substantially parallel to opposite faces of the tooth of the drive and/or driven gear.4. The gear pump assembly of wherein the passage includes a second passage portion communicating at a first end with the first passage portion ...

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Номер записи: 28
23-01-2020 дата публикации

SCROLL COMPRESSOR

Номер: US20200025197A1
Автор: AHN Hyun Seong, Lim Kweon Soo, MOON Chi Myeong, Park Chang Eon, Shin In Cheol
Принадлежит:

Scroll compressor includes a shaft rotatably supported to a casing; an eccentric bush having a recess part into which one end portion of the shaft is inserted, an eccentric part eccentric to the shaft, and a balance weight disposed at the opposite side of the eccentric part with respect to the recess part; an orbiting scroll for performing the orbiting motion in interlock with the eccentric part; and a fixed scroll for forming a compression chamber together with the orbiting scroll. The casing has an orbiting groove in which the eccentric bush performs the orbiting motion, a buffer member is interposed between the orbiting groove and the balance weight. Rotation clearance is formed between the recess part and the shaft. The buffer member is compressed between the balance weight and the orbiting groove before the recess part and the shaft contact each other by the rotation clearance. 1. A scroll compressor , comprising:a casing;a shaft rotatably supported to the casing;an eccentric bush having a recess part into which one end portion of the shaft is inserted, an eccentric part eccentric to the shaft, and a balance weight disposed at the opposite side of the eccentric part with respect to the recess part;an orbiting scroll for performing the orbiting motion in interlock with the eccentric part; anda fixed scroll for forming a compression chamber together with the orbiting scroll,wherein the casing is formed with an orbiting groove in which the eccentric bush can perform the orbiting motion,wherein a buffer member is interposed between the orbiting groove and the balance weight,wherein the rotation clearance is formed to be present between the inner circumferential surface of the recess part and the outer circumferential surface of the one end portion of the shaft, andwherein the buffer member is formed to be compressed between the outer circumferential surface of the balance weight and the inner circumferential surface of the orbiting groove before the inner ...

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Номер записи: 29
23-01-2020 дата публикации

SPROCKET GEROTOR PUMP

Номер: US20200025198A1
Автор: Bennett, McGowan Sean M., SR. Andy
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A sprocket gerotor pump includes an outer gerotor gear configured to rotate about a first axis. The outer gerotor gear includes an outer gear body including a plurality of internal gear teeth extending from the outer gear body toward the first axis. The sprocket gerotor pump includes an inner gerotor gear configured to rotate about a second axis. The inner gerotor gear includes an inner gear body and a plurality of external gear teeth extending from the inner gerotor gear away from the second axis. The external gear teeth mesh with the internal gear teeth. Rotating the outer gerotor gear causes rotation of the inner gerotor gear. The sprocket gerotor pump further includes a sprocket integrally coupled with the outer gerotor gear such that the sprocket and the outer gerotor gear collectively form a one-piece structure. The sprocket is driven by a chain. 1. A sprocket gerotor pump , comprising:an outer gerotor gear configured to rotate about a first axis, wherein the outer gerotor gear includes an outer gear body including a plurality of internal gear teeth extending from the outer gear body toward the first axis;an inner gerotor gear configured to rotate about a second axis, wherein the second axis is spaced apart from the first axis, the inner gerotor gear includes an inner gear body and a plurality of external gear teeth extending from the inner gear body away from the second axis, and the plurality of external gear teeth meshes with the plurality of the internal gear teeth such that rotation of the outer gerotor gear causes rotation of the inner gerotor gear; anda sprocket integrally coupled with the outer gerotor gear such that the sprocket and the outer gerotor gear collectively form a one-piece structure.2. The sprocket gerotor pump of claim 1 , wherein the sprocket includes a ring and a plurality of external sprocket teeth extending from the ring.3. The sprocket gerotor pump of claim 2 , wherein the ring is directly coupled to the outer gear body claim 2 , the ...

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Номер записи: 30
23-01-2020 дата публикации

HIGH EFFICIENCY GEAR PUMP BEARING ASSEMBLY

Номер: US20200025241A1
Автор: Goy Edward W., Samotshozo Ernest W., Stadler Jeffrey A., Wetch Joseph
Принадлежит:

A bearing assembly for a gear pump that includes a bearing housing, a bearing, and a biasing member. The bearing housing has a housing bore that extends between a first housing end and a second housing end along a bearing axis. The bearing is disposed within the housing bore. The bearing has an outer diameter extending between a first bearing end and a second bearing end. The biasing member is disposed between the bearing and the bearing housing to apply a biasing load to the bearing. 1. A bearing assembly for a gear pump , comprising:a bearing housing having a housing bore that extends between a first housing end and a second housing end along a bearing axis;a bearing disposed within the housing bore, the bearing having an outer diameter extending between a first bearing end and a second bearing end; anda biasing member disposed between the bearing and the bearing housing to apply a biasing load to the bearing.2. The bearing assembly of claim 1 , wherein the biasing member includes a first arm that engages the outer diameter of the bearing and a second arm that engages the housing bore.3. The bearing assembly of claim 1 , wherein the bearing housing defines an opening that radially extends from an outer surface of the bearing housing towards the housing bore.4. The bearing assembly of claim 1 , wherein the bearing includes a first bearing arm that radially extends from the outer diameter towards the housing bore.5. The bearing assembly of claim 4 , wherein the biasing member is axially disposed between the first bearing arm and the second bearing end.6. The bearing assembly of claim 4 , wherein the first bearing arm defines a pocket that receives the biasing member.7. The bearing assembly of claim 4 , wherein the bearing includes a second bearing arm that is axially spaced apart from the first bearing arm and radially extends from the outer diameter towards the housing bore.8. The bearing assembly of claim 7 , wherein the second bearing arm defines a pocket that ...

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Номер записи: 31
04-02-2016 дата публикации

OIL PUMP

Номер: US20160032923A1
Автор: IZUTSU Masato, Watanabe Takatoshi
Принадлежит:

An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation, by causing a rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor, the oil pump including a pump housing in which a first partitioning section is formed between a trailing end section of the intake port and a leading end section of the discharge port, and a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port. A width dimension of the second partitioning section is formed to be the same as or larger than a formation range of a space between teeth which is constituted by the inner rotor and the outer rotor passing the second partitioning section during a low-speed rotation. 1. An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation , by causing a rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor , the oil pump comprising:a pump housing in which a first partitioning section is formed between a trailing end section of the intake port and a leading end section of the discharge port, and a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port,wherein the reference line passes through respective central positions of the first partitioning section and the second partitioning section in a width direction during a low-speed rotation,wherein the reference line rotates in a direction opposite to a direction of rotation of the inner rotor and the outer rotor, and passes through rear sides, in terms of the direction of rotation, of the respective central positions of the first partitioning section and the second partitioning section in the width direction during a high-speed rotation,wherein a width dimension of the second partitioning section is formed to be the ...

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Номер записи: 32
04-02-2016 дата публикации

GEAR PUMP BEARINGS WITH HYBRID PADS

Номер: US20160032969A1
Автор: Heitz Steven A., Kovach Brandon T.
Принадлежит:

A journal bearing assembly includes a first journal bearing disposed about a longitudinal end of a gear shaft and spaced a first distance from a first axial gear face. A first fluid film location and a first hybrid pad location are annularly between an inner surface of the first journal bearing and an outer surface of the gear shaft. The first hybrid pad location circumferentially adjacent to the first fluid film location has a minimum leading edge angular location of at least about 31.0° measured relative to a first bearing flat. A first porting path provides high pressure fluid communication from a location outside the first journal bearing to the first fluid film location at or adjacent to the first hybrid pad location. 1. A journal bearing assembly comprising:a gear shaft;a gear mounted to the gear shaft, the gear including a first axial gear face;a first journal bearing disposed about a longitudinal end of the gear shaft and spaced a first distance from the first axial gear face;a first fluid film location annularly between an inner surface of the first journal bearing and an outer surface of the gear shaft;a first hybrid pad location circumferentially adjacent to the first fluid film location, the first hybrid pad location having a minimum leading edge angular location of at least about 31.0° measured relative to a first bearing flat; anda first porting path through a body of the first journal bearing providing high pressure fluid communication from a location outside the first journal bearing to the first fluid film location at or adjacent to the first hybrid pad location.2. The journal bearing assembly of claim 1 , wherein the first porting path comprises:a discharge face cut into an outer surface of the first journal bearing for receiving the high pressure fluid;a radial spool cut into the first journal bearing;an axial hole through the first journal bearing for communicating the high pressure fluid from the discharge face cut to the radial spool cut; anda ...

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Номер записи: 33
17-02-2022 дата публикации

Apparatus for Reducing Noise of Gear Pump Through Uneven Pitch-Simulated Control and Method Thereof

Номер: US20220049696A1
Автор: Choi Chin Chul, Han Dong Kuk, Hwang Byung Jun, Jang Sung Wook, KIM Hyung Suk, KIM Minsu
Принадлежит:

An apparatus for reducing noise of a gear pump through uneven pitch-simulated control includes a calculation unit to calculate different control current values for each tooth of a teeth order by applying a teeth number, the teeth order, and a teeth angle of the gear pump in which a plurality of teeth are evenly formed, a storage unit to map and store the teeth order and the different control current values corresponding to the teeth order for each tooth, and a current controller to variably generate the control current value mapped corresponding to the teeth order when each tooth reaches a reference position when the gear pump rotates by a motor, wherein the control current value is added to a reference current value of a motor control signal and applied to the motor. 1. An apparatus for reducing noise of a gear pump through uneven pitch-simulated control , the apparatus comprising:a calculation unit configured to calculate different control current values for each tooth of a teeth order by applying a teeth number, the teeth order, and a teeth angle of the gear pump in which a plurality of teeth are evenly formed to a predetermined function;a storage unit configured to map and store the teeth order and the different control current values corresponding to the teeth order for each tooth; anda current controller configured to variably generate the control current value mapped corresponding to the teeth order when each tooth reaches a reference position when the gear pump rotates by a motor, wherein the control current value is added to a reference current value of a motor control signal and applied to the motor.2. The apparatus of claim 1 , wherein the current controller is configured to:instantaneously generate the control current value mapped with the tooth corresponding to the teeth order at a time when the tooth corresponding to the teeth order reaches the reference position; andapply only the reference current value to the motor during a remaining time when the ...

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Номер записи: 34
31-01-2019 дата публикации

INTERNAL GEAR PUMP

Номер: US20190032653A1
Автор: FUJIE Atsushi, HORIE Shinya, Namiki Katsuyuki, Saito Makoto
Принадлежит: SUBARU CORPORATION

An internal gear pump includes an outer rotor, an inner rotor, and a pump housing. The inner rotor is rotatably disposed inside the outer rotor having internal teeth, forms pump chambers between the outer rotor and the inner rotor, and has external teeth. The pump housing has an inhalation port, a discharge port, and a first notch formed within a first land surface that extends from an end of the inhalation port to an end of the discharge port. The first notch is formed along a projection trajectory obtained by projecting a trajectory of chip points on the first land surface, where each chip point is a middle point between a corresponding one of the internal teeth and a corresponding one of the external teeth at a location at which the internal and external teeth substantially face each other above the first land surface and are closest to each other. 1. An internal gear pump comprising:an outer rotor that comprises internal teeth;an inner rotor that is rotatably disposed inside the outer rotor, that forms pump chambers configured to expand and contract repeatedly between the outer rotor and the inner rotor, and that comprises external teeth a number of which is one less than a number of the internal teeth, the external teeth being engageable with the internal teeth; anda pump housing that is formed of a case comprising a retention hollow in which the outer rotor is rotatably retained and a cover that blocks an opening of the retention hollow and that has an inhalation port via which a fluid is to be inhaled into the pump chambers and a discharge port via which the fluid is to be discharged from the pump chambers,wherein the pump housing has a first notch formed within a first land surface that extends from an end of the inhalation port to an end of the discharge port, and the internal teeth and the external teeth are in sliding contact with the first land surface, andwherein the first notch is formed along a projection trajectory obtained by projecting a trajectory ...

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Номер записи: 35
30-01-2020 дата публикации

Positive Displacement Pump With Shaft-Mounted Sleeve

Номер: US20200032790A1
Автор: Garner Bob
Принадлежит:

A rotary positive displacement pump comprising a pair of forwardly-positioned sealing arrangements and a pair of forwardly-positioned sleeves are received within a cavity providing for easy maintenance of the pump when the seals need to serviced. Each of the sealing arrangement includes a dynamic seal and a static seal. The dynamic seal is positioned forward of the static seal and abuts a corresponding sleeve and hub. 1. A rotary positive displacement pump for pumping a pumped product , the rotary positive displacement pump comprising:a gear case including a pair of shafts extending therefrom at a forward end;a pump body supported by the gear case on the forward end of the gear case, the pump body having a cover attached thereto so as to define a cavity between the pump body and the cover in which the cavity has an inlet and an outlet, the pump body having a pair of hubs that extend into the cavity in which each of the pair of hubs has an axially-extending opening through each one of which a corresponding one of the pair of shafts from the gear case is received;a pair of rotors, each of the pair of rotors having a central portion received on one of the pair of shafts inside the axially-extending opening of the hub, each rotor having wings attached to the central portion of the rotor in which the wings of the rotor are disposed radially outward of the hub when the central portion of the rotor is attached to the shaft, the rotors on the pair of shafts being rotatable in opposite directions to pump a pumped product through the pump body from the inlet through the cavity to the outlet;a pair of sleeves, each of the pair of sleeves having a wall extending circumferentially along and about a longitudinal axis to define a central opening therein, the central opening of each of the pair of sleeves receiving a corresponding one of the pair of shafts, and each of the pair of sleeves configured to rotate in concert with the corresponding one of the pair of shafts; anda pair of ...

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Номер записи: 36
05-02-2015 дата публикации

SCROLL COMPRESSOR WITH PRESSURIZED OIL BALANCE PISTON

Номер: US20150037192A1
Автор: Benco Michael Gerard, Heger Joseph M., Lepak Derrick, Novak Keith Adam, Rood Jerry Allen, Sauls John Robert, Smerud Scott Joseph
Принадлежит:

A scroll compressor includes an orbiting scroll member disposed within a compressor housing. The orbiting scroll member has a substantially circular baseplate and a generally spiral wrap extending from its base. A first seal is disposed proximal to the outer periphery of the orbiting scroll baseplate to provide an external seal between the baseplate and the housing. A second seal is disposed radially inward from the first seal to provide an internal seal between the baseplate and the housing. A space between the internal seal and the external seal defines a balance piston chamber. The balance piston chamber is pressurized via a high or intermediate pressure oil source to reduce thrust loading on the baseplate caused by an axial pressure differential across the baseplate. 1. A scroll compressor , comprising:a compressor housing; a first, stationary, scroll member comprising a base and a generally spiral wrap extending from the base of the first, stationary, scroll member; and', 'a second, orbiting, scroll member comprising a substantially circular base and a substantially spiral wrap extending from the base of the second, orbiting scroll member;, 'an output stage of compression disposed within the compressor housing, the output stage comprisinga first seal disposed proximal to the outer periphery of the substantially circular base and forming an external seal between the substantially circular base and the compressor housing;a second seal disposed radially inward from the first seal and forming an internal seal between the substantially circular base and the compressor housing, wherein a space between the internal seal and the external seal defines a balance piston chamber; andan oil passage disposed within the compressor housing and configured to receive pressurized oil from an oil source and to deliver the received pressurized oil to the balance piston chamber, such that thrust loading on the substantially circular base caused by an axial pressure differential ...

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Номер записи: 37
05-02-2015 дата публикации

OIL PUMP

Номер: US20150037194A1
Автор: Kan Yasuhiko, Nishioka Sentaro, Taguchi Hiroyuki
Принадлежит:

An oil pump has a pump body, an outer rotor, and an inner rotor. The pump body includes a rotor chamber, an inlet port and an outlet port formed in the rotor chamber, an inlet passage communicating with the inlet port, an outlet passage communicating with the outlet port, a relief valve, a relief chamber formed on a discharge side of the relief valve, and an oil return passage formed from the relief chamber to the inlet passage. The outer rotor is supported by the inner circumferential support wall of the rotor chamber. The oil return passage is formed in the inner circumferential support wall as a groove-like recess and opens along an outer circumferential surface of the outer rotor. 1. An oil pump , comprising:a pump body;an outer rotor; andan inner rotor,the pump body including a rotor chamber having an inner circumferential support wall on an inner circumferential side, an inlet port and an outlet port formed in the rotor chamber, an inlet passage communicating with said inlet port, an outlet passage communicating with said outlet port, a relief valve allowing oil to flow from the outlet passage to said inlet passage by relieving pressure, a relief chamber formed on a discharge side of the relief valve, and an oil return passage formed from said relief chamber to said inlet passage;the outer rotor being supported by the inner circumferential support wall of said rotor chamber; andthe inner rotor being arranged on an inner circumferential side of the outer rotor, wherein said oil return passage is formed in said inner circumferential support wall as a groove-like recess and opens along an outer circumferential surface of said outer rotor.2. The oil pump according to claim 1 , wherein said oil return passage is formed at and around a symmetric point of a maximum partition part located between a trailing end of said inlet port and a leading end of said outlet port relative to a center point of said rotor chamber.3. The oil pump according to claim 1 , wherein said ...

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Номер записи: 38
01-05-2014 дата публикации

Rotary Expansible Chamber Devices Having Adjustable Working-Fluid Ports, and Systems Incorporating The Same

Номер: US20140119967A1
Автор: Feustel Aaron
Принадлежит:

Rotary expansible chamber (REC) devices having one or more working-fluid ports that are adjustable, for example, in size or location. In some embodiments, the variable port mechanisms can be used to control any one or more of a plurality of operating parameters of a REC device independently of one or more others of the operating parameters. In some embodiments, the REC devices can have a plurality of fluid volumes that change in size during rotation of the REC device, and that transition to a zero volume condition during the rotation of the REC device. Systems are also provided that can include one or more REC devices. Methods for controlling various aspects of REC devices, including methods of controlling one or more operating parameters, are also provided. 1. A rotary expansible chamber device , comprising:an outer rotary component having a machine axis;an inner rotary component located relative to said outer rotary component so as to define a fluid zone between said inner and outer components, said fluid zone for receiving a working fluid during use, wherein said inner and outer rotary components are designed and configured to engage one another so that, when at least one of said inner and outer rotary components is continuously moved relative to the other about an axis parallel to said machine axis, said inner and outer rotary components continuously define at least one shrinking arc, at least one expanding arc, and at least one zero volume arc within said fluid zone;a first working-fluid port in fluid communication with said fluid zone and having a first circumferential extent and a first angular position about said machine axis; anda first mechanism designed and configured to controllably change at least one of said first circumferential extent and said first angular position.2. The rotary expansible chamber device of claim 1 , further comprising:a second working-fluid port in fluid communication with said fluid zone and having a second circumferential extent ...

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Номер записи: 39
01-05-2014 дата публикации

Lightweight and Flexible Rotors for Positive Displacement Devices

Номер: US20140119974A1
Автор: Kitching Alan H.
Принадлежит: NATIONAL OILWELL VARCO, L.P.

A rotor for a progressive cavity device has a central axis and includes an outer tubular. The outer tubular has a radially outer surface and a radially inner surface defining a rotor cavity. The outer surface includes at least one helical rotor lobe. The rotor also includes a filler structure disposed within the rotor cavity. The outer tubular is made of a first material having a first density and the filler structure is made of a second material having a second density that is less than the first density. 1. A rotor for a progressive cavity device , the rotor having a central axis and comprising:an outer tubular having a radially outer surface and a radially inner surface defining a rotor cavity, wherein the outer surface includes at least one helical rotor lobe; anda filler structure disposed within the rotor cavity;wherein the outer tubular is made of a first material having a first density and the filler structure is made of a second material having a second density that is less than the first density.2. The rotor of claim 1 , wherein the first material is steel and the second material is an elastomer or polymer.3. The rotor of claim 1 , further comprising an inner tubular disposed within the outer tubular claim 1 , wherein the filler structure is radially positioned between the outer tubular and the inner tubular.4. The rotor of claim 3 , wherein an annulus is radially positioned between the inner tubular and the outer tubular claim 3 , wherein the filler structure is disposed in the annulus.5. The rotor of claim 3 , wherein the radially inner surface of the outer tubular includes at least one helical lobe and wherein the inner tubular contacts the at least one helical lobe on the radially inner surface of the outer tubular.6. The rotor of claim 3 , wherein the inner tubular is made of a third material having a third density claim 3 , wherein the second density is less than the third density.7. The rotor of claim 6 , wherein the first material and the third ...

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Номер записи: 40
24-02-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220056908A1
Автор: AHN Sungyong, KIM Taekyoung, LEE Jaeha
Принадлежит:

A scroll compressor includes oil in an oil storage space that is brought into direct contact with and stirred with a discharge refrigerant. The scroll compressor includes a fixed scroll, an orbiting scroll coupled to one side of the fixed scroll, and a discharge cover coupled to another side of the fixed scroll and provided with a muffler hole communicating with a refrigerant discharge space and the oil storage space. 1. A scroll compressor comprising:a fixed scroll;an orbiting scroll disposed at a first side of the fixed scroll and configured to perform an orbiting motion relative to the fixed scroll and define a compression chamber between the orbiting scroll and the fixed scroll;a discharge cover disposed at a second side of the fixed scroll that is opposite to the first side of the fixed scroll; anda casing extending in a first direction and accommodating the fixed scroll, the orbiting scroll, and the discharge cover,{'claim-text': ['a cover bottom surface,', 'a cover side portion extending from the cover bottom surface toward the fixed scroll, and', 'a discharge space defined by the cover bottom surface, the cover side portion, and the fixed scroll,', 'wherein the cover bottom surface and an inner circumferential surface of the casing are spaced apart from each other and define an oil storage space between the cover bottom surface and the casing, and', 'wherein the cover bottom surface defines a muffler hole that is in fluid communication with the discharge space and the oil storage space.'], '#text': 'wherein the discharge cover comprises:'}2. The scroll compressor of claim 1 , wherein the cover bottom surface is coupled with an oil feeder at a side of the cover bottom surface that is opposite to the fixed scroll claim 1 , the oil feeder extending away from the fixed scroll claim 1 , andwherein the muffler hole Is disposed between an outer circumference of the oil feeder and an outer circumferential surface of the cover bottom surface.3. The scroll compressor ...

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Номер записи: 41
18-02-2016 дата публикации

Slurry Pump

Номер: US20160047376A1
Автор: KLASSEN James
Принадлежит:

In a rotor in rotor configuration, a pump has inward projections on an outer rotor and outward projections on an inner rotor. The outer rotor is driven and the projections mesh to create variable volume chambers. The outer rotor may be driven in both directions. In each direction, the driving part (first inward projection) of the outer rotor contacts a sealing surface on one side of an outward projection of the inner rotor, while a gap is left between a sealing surface of the other side of the outward projection and a second inward projection. The gap may have uniform width along its length in the radial direction, while in a direction parallel to the rotor axis it may be discontinuous or have variable size to create flow paths for gases. 1. A fluid transfer device comprising:a housing having an inward facing surface;an outer rotor secured for rotation about an outer rotor axis that is fixed in relation to the housing, the outer rotor having inward projections, the outer rotor being arranged to be driven in operation by a drive shaft;an inner rotor secured for rotation about an inner rotor axis that is fixed in relation to the housing, the inner rotor axis being inside the outer rotor, the inner rotor having outward projections, the outward projections in operation meshing with the inward projections to define variable volume chambers as the inner rotor and outer rotor rotate; fluid transfer passages in a portion of the housing to permit flow of fluid into and out of the variable volume chambers; andeach outward projection having a first sealing surface and a second sealing surface circumferentially opposed to each other for respective engagement with corresponding sealing surfaces of adjacent inward projections such that in an operational configuration in which the outer rotor is driven in a first direction, the first sealing surface seals against a first corresponding inward projection with a first gap between at least part of the second sealing surface and a ...

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Номер записи: 42
18-02-2016 дата публикации

Gear Wheel with Meshing Teeth

Номер: US20160047462A1
Автор: CAGNANI Pierpaolo
Принадлежит: Settima Meccanica S.r.l. - Societa a Socio Unico

The invention concerns a gear wheel () having a plurality of identical teeth suitable for meshing in parallel with a similar second gear wheel in a casing () of a hydraulic machine, said gear wheel having a side face of the front toothing () and a side face of the rear toothing () suitable for dragging in rotation against a front bush () and a rear bush (), respectively, said bushes () being slotted onto a sleeve () fixedly connected to the gear wheel (), said helical teeth extending along the entire gear wheel () between the front side face () and the rear side face (), where both the side face of the front toothing () and the side face of the rear toothing () have, at each tooth, a removed rotor portion (), so as to have an area of the side faces of the toothing that does not come into contact with the bush when the latter is placed in abutment against the respective side face of the toothing of the gear wheel. 1. A Gear wheel having a plurality of identical teeth suitable for meshing in parallel with a similar second gear wheel in a casing of a hydraulic machine , said gear wheel having a side face of the front toothing and a side face of the rear toothing suitable for dragging in rotation against a front bush and a rear bush respectively , said bushes being slotted onto a sleeve fixedly connected to the gear wheel , said helical teeth extending along the entire gear wheel between the front side face and the rear side face , wherein both the side face of the front toothing and the side face of the rear toothing have , at each tooth , a rotor portion removed , so as to have an area of the side faces of the toothing that does not come into contact with the bush when the latter is placed in abutment against the respective side face of the toothing of the gear wheel.2. The gear wheel according to claim 1 , wherein said removed portion comprises a chamfer uniformly distributed along the entire perimeter of the side faces of the toothing.3. The gear wheel according to ...

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Номер записи: 43
16-02-2017 дата публикации

Fluid Delivery System With A Shaft Having A Through-Passage

Номер: US20170045046A1
Автор: Afshari Thomas
Принадлежит:

A fluid delivery system having at least one fluid storage device and a pump with at least one fluid driver with a flow-through shaft that has a through-passage. The pump includes a casing, and at least one fluid driver having a prime mover and at least one fluid displacement member. A shaft of the prime mover and/or a shaft of the fluid displacement member and/or a common shaft of the prime mover/fluid displacement member (depending on the configuration of the pump) is a flow-through shaft with a through-passage configuration that allows fluid communication between at least one port of the pump and the at least one fluid storage device. 1. A pump comprising:a casing defining an interior volume, the casing including a first port in fluid communication with the interior volume, and a second port in fluid communication with the interior volume;a first gear disposed within the interior volume, the first gear having a first gear body and a plurality of first gear teeth;a second gear disposed within the interior volume, the second gear having a second gear body and a plurality of second gear teeth projecting radially outwardly from the second gear body, the second gear is disposed such that a second face of at least one tooth of the plurality of second gear teeth aligns with a first face of at least one tooth of the plurality of first gear teeth;a first motor that rotates the first gear about a first axial centerline of the first gear in a first direction to transfer a fluid from the first port to the second port along a first flow path;a second motor that rotates the second gear, independently of the first motor, about a second axial centerline of the second gear in a second direction to contact the second face with the first face and to transfer the fluid from the first port to the second port along a second flow path; andat least one flow-through shaft disposed in at least one of the first motor, the second motor, the first gear and the second gear, each of the at ...

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Номер записи: 44
15-02-2018 дата публикации

SYSTEMS AND DEVICES FOR PUMPING AND CONTROLLING HIGH TEMPERATURE FLUIDS

Номер: US20180045197A1
Автор: Amy Caleb, Bagepalli Malavika, Budenstein Daniel, England Diane, Henry Asegun, Kelsall Colin
Принадлежит:

The disclosed technology includes pumps, pipes, valves, seals, and systems for pumping and controlling high temperature fluids, such as liquid tin, at temperatures of between 1000-3000° C. The systems and device may be partially or entirely constructed using brittle materials, such as ceramics, that are capable of withstanding extreme heat without significantly degrading, and may be secured using components made of refractory metals, such as tungsten. The systems and devices may utilize static and dynamic seals made from brittle materials, such as graphite, to enable the high temperature operation of such pumps, pipes, valves, and systems without leakage. 1. A pump for pumping at least one of liquids and gases , the pump being formed at least in part from at least one brittle material and configured to operate at temperatures between 500° C. and 3000° C.2. The pump of claim 1 , comprised of a first brittle material and having a seal comprised of a second brittle material.3. The pump of claim 2 , further comprising stationary components sealed by a static seal comprised of the second brittle material and moveable components sealed with a dynamic seal comprised of the second brittle material.4. The pump of comprising: a closed face having an aperture for receiving a shaft;', 'an open face;', 'a chamber disposed between the closed face and the open face, the chamber housing at least a first gear, the first gear being attached to the shaft; and', 'a first plurality of apertures for receiving securing members;, 'a pump body made of the first brittle material, the pump body comprisinga first plate positioned externally to the closed face of the pump body, the first plate being made of the first brittle material or a refractory metal and having an aperture for receiving the shaft and a second plurality of apertures for receiving securing members;a plurality of securing members that are disposed in the first and second plurality of apertures to secure the first plate to the ...

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Номер записи: 45
15-02-2018 дата публикации

GEAR PUMP FOR COMPRESSIBLE LIQUIDS OR FLUIDS

Номер: US20180045198A1
Автор: BRIERE Olivier
Принадлежит:

Disclosed is a gear pump including a pumping chamber in which a first shaft and a second shaft are rotated about their respective axes, each of the first and second shafts supporting at least one hydraulic-pumping element that hydraulically pumps a fluid in the pumping chamber, the at least one hydraulic-pumping element of each of the first and second shafts being positioned in the pumping chamber and each having at least one first radial projection. In the pumping chamber, each of the first and second shafts further supports at least one mechanical drive pinion that rotates each of the first and second shafts, each mechanical drive pinion having second radial projections. The at least one mechanical drive pinion is separate from the at least one hydraulic-pumping element, and the number of the at least one first radial projection and of the second radial projections is different. 1128989. Gear pump () comprising a pumping chamber () in which a first shaft () and a second shaft () are driven in rotation about the respective axis thereof (D , D) ,{'b': 8', '9', '20', '2', '20', '8', '9', '2', '21, 'each of the first and second shafts (, ) bearing at least one hydraulic pumping element () providing the hydraulic pumping of a fluid in the pumping chamber (), said at least one hydraulic pumping element () of each of said first and second shafts (, ) being positioned in said pumping chamber () and each having at least one first radial projection (), wherein'}{'b': 2', '8', '9', '14', '8', '9', '14', '15', '8', '9', '14', '20, 'in the pumping chamber (), each of said first and second shafts (, ) also bears at least one pinion () for mechanically driving in rotation each of said first and second shafts (, ), each mechanical drive pinion () having second radial projections (), wherein, on each of said first and second shafts (, ), said at least one mechanical drive pinion () is distinct from said at least one hydraulic pumping element (),'}{'b': 21', '15, 'and wherein said ...

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Номер записи: 46
03-03-2022 дата публикации

FIXED SCROLL DISK AND SCROLL COMPRESSOR HAVING THE SAME

Номер: US20220065245A1
Автор: Ji Xiaokun, Lin Jiangbo
Принадлежит:

The present disclosure discloses a fixed scroll and a scroll compressor with the same. The fixed scroll includes: an end plate; a fixed scroll wrap protruding from one surface of the end plate; and an internal cavity formed in the end plate. By adopting the fixed scroll and the scroll compressor with the fixed scroll according to the embodiment of the present disclosure, a weight of the scroll compressor may be reduced for example. 1. A fixed scroll for scroll compressor , the fixed scroll comprising:an end plate;a fixed scroll wrap protruding from one surface of the end plate; andan internal cavity formed in the end plate.2. The fixed scroll for scroll compressor according to claim 1 , wherein:the internal cavity comprises two inner walls facing each other in an axial direction of the end plate and two inner walls facing each other in a radial direction of the end plate.3. The fixed scroll for scroll compressor according to claim 1 , further comprising:a discharge hole formed in the end plate and communicating the internal cavity with outside, which is configured to discharge material from the internal cavity during a manufacturing process.4. The fixed scroll for scroll compressor according to claim 1 , wherein:the internal cavity comprises a plurality of internal cavities arranged around an axis of the end plate.5. The fixed scroll for scroll compressor according to claim 4 , further comprising:discharge holes formed in the end plate and communicating the plurality of internal cavities with outside, which are configured to discharge material from the plurality of internal cavities during a manufacturing process; anda port formed in the end plate,wherein the plurality of internal cavities comprise two first internal cavities adjacent to the port and a plurality of second internal cavities between the two first internal cavities in a circumferential direction, andwherein the discharge holes comprise:first communication holes which are located between and communicate ...

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Номер записи: 47
03-03-2022 дата публикации

ROTARY PUMP WITH ROTOR BEARING RING

Номер: US20220065246A1
Автор: Danielsson Carl Magnus
Принадлежит: The Bricks Groupe, LLC

Lobe pumps have rings which can be located at least partially in at least one of cover plates and rotors, if not both to provide at least thrust bearings to space the rotors from the cover plates. Some rotors may have voids in ears to make the rotor lighter in weight with the voids potentially capped, symmetrically disposed, arcuately shaped and/or have other desirable features. Some rotors may have ears extending beyond cutouts which may extend beyond hubs, if not beyond hub extensions as well which may receive cover spigots thereabout. Some rings may act as radial bearings as well when located in the cover spigots. 1. A rotary lobe pump comprising:a rotor housing assisting defining a cavity intermediate side walls, an end wall and a cover plate;parallel first and second shafts extend into the cavity from the end wall;an inlet port and an outlet port communicating with the cavity;first and second rotors connected to the first and second shafts, respectively; each of the first and second rotors having ears with faces directed toward the cover plate connected to a central hub with the hub connected to the respective first and second shaft; andfirst rings intermediate each of the first and second rotors and the cover plate located at least partially in a first ring groove circumnavigating one of the cover plate and rotor, said first rings providing at least a thrust bearing spacing the faces of the first and second rotors from the cover plate.2. The rotary lobe pump of further comprising (a) cutouts spacing portions of the ears from the shaft and (b) cover spigots extending from the cover plate claim 1 , said cover spigots receiving and surrounding portions of the first and second shafts and extending into the cutouts.3. The rotary lobe pump of wherein the cutout extends a depth of at least ⅓ of a depth of the ears.4. The rotary lobe pump of further comprising voids in the ears.5. The rotary lobe pump of wherein at least some of the voids have a depth greater than a ...

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Номер записи: 48
13-02-2020 дата публикации

COMPRESSOR

Номер: US20200049149A1
Автор: Enomoto Hiroshi, MIYAZAWA Kanetaka
Принадлежит:

Corrosion due to salt water, or the like, is prevented or suppressed between fastening end portions of housing members, while minimizing increase in production cost with respect to corrosion. A housing of a compressor has a front housing a center housing and a rear housing The front housing and the center housing are fastened to each other by a plurality of fastening members and mutual fastening end portions ( and ) thereof are welded together. The center housing and the rear housing are fastened to each other by a plurality of fastening members and mutual fastening end portions ( and ) thereof are welded together. A weld bead W is formed between the fastening end portion and the fastening end portion and a weld bead W is formed between the fastening end portion and the fastening end portion 1. A compressor comprising:a housing made of an aluminum alloy; anda compression mechanism accommodated in the housing,wherein the housing has a first housing member and a second housing member which are fastened to each other by a plurality of fastening members and fastening end portions of which are welded to each other, with a weld bead being formed between the fastening end portion of the first housing member and the fastening end portion of the second housing member.2. The compressor according to claim 1 , wherein blow holes are dispersed within the weld bead over an outer peripheral direction of the housing.3. The compressor according to claim 1 , wherein the weld beads are formed in portions excluding the regions which corresponds to the plurality of fastening members in an annular region between the fastening end portion of the first housing member and the fastening end portion of the second housing member.4. The compressor according to claim 1 , wherein the first housing member and the second housing member are welded to each other from a housing outer surface side in a state in which the end surfaces of the respective fastening end portions of the first housing member ...

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Номер записи: 49
22-02-2018 дата публикации

Cardan shaft

Номер: US20180051752A1
Автор: Vagn Soennichsen
Принадлежит: Danfoss Power Solutions ApS

A shaft ( 1 ) is shown comprising a shaft section ( 2 ) having an axis ( 3 ), a tooth geometry ( 4 ) at least at one end of said shaft section, said tooth geometry ( 4 ) having a first end ( 5 ) opposite said shaft section ( 2 ) and a second end ( 6 ) adjacent said shaft section ( 2 ), a number of teeth ( 7 ) distributed in circumferential direction around said axis ( 3 ), a bottom curve ( 9 ) between adjacent teeth ( 7 ), and an outer tooth curve ( 12 ), said bottom curve ( 9 ) having a positive slope from said first end ( 5 ) towards said shaft section ( 2 ) and a negative slope ( 14 ) at said second end ( 6 ). In such a shaft wear should be made as small as possible. To this end said bottom curve ( 9 ) comprises a section having a concave bottom curvature ( 15 ) between said positive slope and said negative slope.

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Номер записи: 50
10-03-2022 дата публикации

OIL PUMP

Номер: US20220074406A1
Автор: SAITO Yuken, Watanabe Manabu, Yahagi Tomonori
Принадлежит:

An oil pump is configured to include a rotor, a drive shaft that drives the rotor to rotate, a rotor chamber in which the rotor is contained, an inlet port and an outlet port each provided in the vicinity of the rotor chamber, and a pump cover. The pump cover is made of a resin. On a portion of an outer surface side of the pump cover corresponding to an inner portion, in which oil circulates, of the pump cover, a rib that has an erecting wall shape is provided. 1. An oil pump comprising:a rotor;a drive shaft that drives the rotor to rotate;a rotor chamber in which the rotor is contained;an inlet port and an outlet port each provided in the vicinity of the rotor chamber; anda pump cover, whereinthe pump cover is made of a resin, andon a portion of an outer surface side of the pump cover corresponding to an inner portion, in which oil circulates, of the pump cover, a rib that has an erecting wall shape is provided.2. The oil pump according to claim 1 , wherein the rib is formed along a shape of the outlet port.3. The oil pump according to claim 1 , wherein the rib is formed on the portion corresponding to a range disposed at a radial middle portion of the outlet port and extending claim 1 , along a direction of the rotation of the rotor claim 1 , to the vicinity of a terminal end of the outlet port or to the vicinity of a beginning end of the inlet port.4. The oil pump according to claim 1 , wherein the rib is formed to extend gradually radially away from a periphery of an insertion portion which is disposed at a radial middle portion of the outlet port and through which the drive shaft is inserted claim 1 , and a portion of the rib extending away has a linear shape.5. The oil pump according to claim 1 , wherein claim 1 , on an outer peripheral side or an inner peripheral side of the rib claim 1 , an auxiliary rib having a length claim 1 , in a direction of the rotation claim 1 , which is shorter than that of the rib is formed to be radially spaced apart by a ...

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Номер записи: 51
05-03-2015 дата публикации

FLUID MACHINE AND RANKINE CYCLE

Номер: US20150064039A1
Автор: Kanou Yasuaki, Nagai Hiroyuki, Nakamura Shinji
Принадлежит: Sanden Corporation

A fluid machine includes: a first shaft; a compressor/expander fluid machine; a planetary gear mechanism having a sun gear connected to a second shaft rotating in synchronization with the compressor/expander fluid machine, a ring gear connected to the first shaft, a planetary gear, and a planetary carrier; a first clutch that locks/releases the planetary carrier and one of the ring gear and the sun gear; a second clutch that locks/releases the planetary carrier and the housing; a clutch control unit that controls locking/releasing of the first and second clutches depending on whether the compressor/expander fluid machine operates as an expander or a compressor. 18.-. (canceled)9. A fluid machine comprising:a first shaft configured to rotate in synchronization with an engine crankshaft;a compressor/expander fluid machine configured to operate as an expander rotating by converting energy of a refrigerant into mechanical energy in rotation of one direction, and operate as a compressor by compressing and discharging the refrigerant in rotation of the other direction; a sun gear connected to the second shaft rotating in synchronization with the compressor/expander fluid machine,', 'a ring gear connected to the first shaft,', 'a plurality of planetary gears configured to mesh with the ring gear and the sun gear and rotate around the sun gear, and', 'a planetary carrier configured to support a rotation shaft of the planetary gear;, 'a planetary gear mechanism having'}a first clutch configured to lock or release the planetary carrier and one of the ring gear and the sun gear;a second clutch configured to lock or release the planetary carrier and a housing; anda clutch control unit configured to control locking/releasing of the first and second clutches depending on whether the compressor/expander fluid machine operates as an expander or a compressor.10. The fluid machine according to claim 9 , wherein the clutch control unit is configured to lock the first clutch and ...

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Номер записи: 52
28-02-2019 дата публикации

AERATION PREVENTING APPARATUS

Номер: US20190063587A1
Автор: Pydin Andrii
Принадлежит:

An aeration preventing apparatus including a partition erected on an upper surface of a bottom wall portion of a case member to separate a reservoir space of oil into a radially inward space and a radially outward space and provided with openings formed over a whole circumference in the partition so as to communicate the radially inward space and the radially outward space, an oil passage forming part forming an oil passage from a suction port facing the radially inward space to an oil pump, a movable plate formed in a substantially arc shape and disposed facing a peripheral surface of the partition so as to cover a part of the openings, and a plate support supporting the movable plate to be movable along the peripheral surface of the partition by a gravitational or inertial force acting on the movable plate. 1. An aeration preventing apparatus , comprising:a case member installed in a vehicle and including a bottom wall portion and a side wall portion to form a reservoir space for accumulating an oil supplied from an oil pump;a partition erected on an upper surface of the bottom wall portion and formed in a substantially cylindrical shape about a axial line in a vertical direction to separate the reservoir space into a radially inward space and a radially outward space, the partition including openings formed over a whole circumference in the partition so as to communicate the radially inward space and the radially outward space;an oil passage forming part configured to form an oil passage from a suction port facing the radially inward space to the oil pump;a movable plate formed in a substantially arc shape about the axial line and disposed facing a peripheral surface of the partition so as to cover a part of the openings; anda plate support configured to support the movable plate to be movable along the peripheral surface of the partition by a gravitational or inertial force acting on the movable plate.2. The aeration preventing apparatus according to claim 1 , ...

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Номер записи: 53
29-05-2014 дата публикации

Hydrodynamic gear assembly

Номер: US20140144268A1
Автор: Lyle Ward
Принадлежит: Hamilton Sundstrand Corp

A gear assembly includes a first gear having a first pitch diameter and a second gear having a second pitch diameter different than the first pitch diameter. The first and second gears are located in a housing bore having a cusp line between first and second sections of the housing bore corresponding to the first and second gears. A first gear bearing is located in the first section of the housing bore and has a first flat side. A second gear bearing is located in the second section of the housing bore and has a second flat side. The second flat side is configured to press against the first flat side along the cusp line of the gear housing based on a pressurized fluid being provided to the housing bore.

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Номер записи: 54
08-03-2018 дата публикации

DUAL INPUT PUMP AND SYSTEM

Номер: US20180066655A1
Автор: KOWALSKI Andrzej, Muizelaar Richard
Принадлежит:

A dual input fluid pump system for coupling to a transmission or an engine and an electrical motor is disclosed. The system may include a first external gear, vane, internal gear, or gerotor-type pump, a second external gear pump, and connecting shaft. Gears of the second pump include one-way clutch bearings that enable operation of the system in multiple modes including engine-only; motor-only; a combined mode where the engine operates the first pump via the shaft and the motor operates the second pump with an external gear rotating in its pumping direction at a rate greater than the shaft; inlet boost; and a disconnection mode. Also noted is a pump that has a first shaft for coupling the engine to a first external gear and a second shaft for coupling the motor to a second external gear, as well as a one-way clutch bearing that performs in a similar manner. 1. A dual input fluid pump system for coupling to a transmission or an internal combustion engine power source and an electrical motor power source , the pump system comprising:a first pump comprising a housing, a rotatable pumping element rotatably mounted in the housing, an inlet, an outlet, and a first input shaft for coupling the transmission or internal combustion engine power source to the rotatable pumping element thereof for rotating the rotatable pumping element in a pumping direction to pump fluid from the inlet to the outlet through the housing;a second pump that is an external gear pump comprising a housing, at least first and second intermeshed external gears rotatably mounted in the housing, an inlet, an outlet, and a second input shaft for coupling the electrical motor power source to the second external gear thereof for rotating the gears in counter-rotating pumping directions to pump fluid from the inlet to the outlet through the housing; anda connecting shaft between the rotatable pumping element of the first pump and the first external gear of the second pump, the connecting shaft being ...

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Номер записи: 55
29-05-2014 дата публикации

FLUID DEVICE WITH PRESSURIZED ROLL POCKETS

Номер: US20140147321A1
Автор: Lucas Jay P., MEEHAN TIMOTHY I.
Принадлежит: EATON CORPORATION

A method for pressurizing a roll pocket of a displacement assembly of a fluid device includes providing a fluid device having a displacement assembly. The displacement assembly includes a ring defining a central bore and roll pockets disposed about the central bore. Rolls are disposed in the roll pockets. A rotor is disposed in the central bore. The ring, the rolls and the rotor define a plurality of expanding and contracting volume chambers. Fluid is communicated from a first port of the fluid device and a second port of the fluid device to each of the roll pockets so that when the volume chamber immediately before one of the roll pockets and the volume chamber immediately after that roll pocket are both in fluid communication with one of the first and second ports, that roll pocket is in fluid communication with the other of the first and second ports. 1. A fluid device comprising:a valve member defining a first plurality of fluid passages in fluid communication with a first fluid port of the fluid device and a second plurality of fluid passages in fluid communication with a second fluid port of the fluid device; a ring defining a central bore and a plurality of roll pockets disposed about the central bore;', 'a plurality of rolls disposed in the plurality of roll pockets;', 'a rotor disposed in the central bore, wherein the ring, the plurality of rolls and the rotor define a plurality of expanding and contracting volume chambers; and', 'wherein fluid is communicated to each of the roll pockets so that when the volume chambers immediately adjacent to one of the roll pockets are in fluid communication with one of the first and second ports, that roll pocket is in fluid communication with the other of the first and second ports., 'a displacement assembly in commutating fluid communication with the valve member, the displacement assembly including2. The fluid device of claim 1 , wherein each of the roll pockets includes a channel into which fluid is communicated.3. ...

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Номер записи: 56
19-03-2015 дата публикации

DOWNHOLE MOTOR STATOR AND METHOD OF MANUFACTURE

Номер: US20150078947A1
Автор: Perez Balthazar L.
Принадлежит:

A method for producing modular down hole, hydraulic motor components involving the formation of replaceable stator slugs to be collectively housed within a stator housing to form a stator assembly, including, in some embodiments, replaceable lobe components for the stator slugs for altering the interference with a selected rotor for such motor. 1. A modular down hole motor assembly component comprising: a first stator slug having a first stator slug exterior surface configured for telescopic positioning within a stator housing , and for relative juxtaposition with one or more additional stator slugs to form , with said one or more additional stator slugs , an elongate stator assembly within said stator housing , said first stator slug having a first interior slug space configured for defining first stator helical lobes and corresponding first stator helical cavities for interaction with correspondingly configured rotor helical lobes and rotor helical cavities of a rotor for facilitating rotation of said rotor under force of fluid forced through said first stator helical cavities and first rotor helical cavities.2. The assembly component of wherein at least portions of one of said stator slugs defining said stator helical lobes and stator helical cavities are formed of a molded claim 1 , polymeric material.3. The assembly of further comprising a second stator slug having an exterior surface configured for telescopic positioning within a stator housing claim 1 , and for relative juxtaposition with said first stator slug to form claim 1 , at least in part with said first stator slug claim 1 , an elongate stator assembly claim 1 , said second stator slug having an interior slug space configured for defining stator helical lobes and corresponding stator helical cavities for interaction with correspondingly configured rotor helical lobes and rotor helical cavities of a rotor for facilitating rotation of said rotor under force of fluid forced through said stator helical ...

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Номер записи: 57
16-03-2017 дата публикации

TANK FOR STORAGE AND DELIVERY OF FLUIDS INCLUDING FUNCTIONAL COMPONENTS DISPOSED ON THE TANK WALL

Номер: US20170074257A1
Автор: BRUSCO Mirco, CHINI Fabrizio, De Metri Ivan, Marini Luca
Принадлежит: Röchling Automotive SE & Co. KG

A tank for motor vehicle includes a tank wall, a fill opening, an outlet opening, a plurality of functional components, and a plurality of attachment formations. The tank wall forms an outermost casing of the tank. The fill opening passes through the tank wall for inlet of operating fluid into the tank. The outlet opening passes through the tank wall for outlet of the operating fluid. The plurality of functional components are designed for pumping and/or for cleaning and/or for detecting a property and/or for changing a property of the operating fluid. The plurality of attachment formations are designed as being integral with the tank wall for positioning of a plurality of functional components on the tank wall. The functional components are disposed on segments of the tank wall, which are arranged at an incline to each other. 2. The tank according to claim 1 , wherein the tank wall comprises a top wall claim 1 , a bottom wall opposite to the top wall claim 1 , and a side wall connecting the top wall to the bottom wall claim 1 , wherein the top wall claim 1 , the bottom wall and the side wall form tank wall segments arranged at an incline to each other.3. The tank according to claim 1 , wherein at the tank wall claim 1 , preferably at the outer side of the tank wall claim 1 , as one functional component a pumping device is arranged for pumping of operating fluid claim 1 , wherein the pumping device features a suction side for the intake of operating fluid and a pressure side for the ejection of operating fluid.4. The tank according to claim 1 , wherein at the tank wall claim 1 , as one functional component a filter device is arranged for filtering of operating fluid.5. The tank according to claim 1 ,wherein the filter device is connected to the pumping device by a first line extending into the interior of the tank for guiding the operating fluid, wherein the first line features an inlet end nearer to the filter device, and an outlet end nearer to the pumping device, ...

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Номер записи: 58
22-03-2018 дата публикации

Sintering a Multi-lobed Helical Rotor

Номер: US20180079005A1
Автор: Peer Richard David
Принадлежит: Halliburton Energy Services, Inc.

The present disclosure relates to a method and system for manufacturing a multi-lobed helical rotor. The method for manufacturing a multi-lobed helical rotor may comprise mixing one or more powdered metals, compacting a mixture of one or more powdered metals to form a solid metal piece, sintering the solid metal piece, and polishing the solid metal piece. The system may comprise a positive displacement pump, which may comprise a casing, a multi-lobed helical rotor disposed in the casing, wherein the multi-lobed helical rotor comprise sintered powdered metals, an inlet to the casing, and an outlet leading from the casing. 1. A method for manufacturing a multi-lobed helical rotor comprising:mixing one or more powdered metals;compacting a mixture of the one or more powdered metals to form a solid metal piece;sintering the solid metal piece; andpolishing the solid metal piece.2. The method of claim 1 , further comprising choosing the one or more powdered metals as the base material for the multi-lobed helical rotor.3. The method of claim 1 , further comprising choosing the one or more powdered metals and at least one additive as the base material for the multi-lobed helical rotor.4. The method of claim 1 , wherein the step of mixing comprises combining the one or more powdered metals with at least one additive.5. The method of claim 1 , wherein the step of compacting comprises adding the at least one powdered metal and at least one additive to a die.6. The method of claim 5 , wherein the step of compacting comprises compacting the at least one powdered metal and at least one additive with a hydraulic ram.7. The method of claim 6 , wherein the step of compacting the at least one powdered metal and the at least one additive with a hydraulic ram forms the multi-lobed helical rotor.8. The method of claim 7 , wherein the step of sintering comprises placing the multi-lobed helical rotor in a furnace.{'claim-ref': {'@idref': 'CLM-00008', 'claim 8'}, 'The method of , wherein ...

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Номер записи: 59
26-03-2015 дата публикации

Internal-Gear Pump and Hydraulic Circuit for a Motor Vehicle Drivetrain

Номер: US20150086403A1
Автор: Berg Holger, Hoffmeister Thomas, Schuster Sven, Schweiher Mark
Принадлежит:

An internal-gear pump has a housing which has a first fluid port and a second fluid port. An inner rotor is mounted in the housing so as to be rotatable about an inner rotor axis and has an external toothing. An outer rotor is rotatable in the housing about an outer rotor axis and has an internal toothing which, to generate a pump action, engages with the external toothing of the inner rotor. The internal-gear pump furthermore has a ring element which is mounted movably in the housing so as to be pivotable between a first position and a second position. At least a third fluid port is formed on the housing. The third fluid port is arranged relative to the ring element such that, in the first position of the ring element, the third fluid port is connected to the second fluid port. In the second position, said third fluid port is separated from the second fluid port. 2. An internal-gear pump according to claim 1 , wherein at least a fourth fluid port is formed on the housing claim 1 , wherein the fourth fluid port is arranged relative to the ring element such that claim 1 , in the second position of the ring element claim 1 , the fourth fluid port is connected to the second fluid port and claim 1 , in the first position claim 1 , said fourth fluid port is separated from the second fluid port.3. An internal-gear pump according to claim 1 , wherein the ring element is mounted in the housing so as to be rotatable about a ring element axis between a first rotational position and a second rotational position and has a rotor receptacle for rotatably receiving the outer rotor claim 1 , wherein the rotor receptacle is formed eccentrically with respect to the ring element axis.4. An internal-gear pump according to claim 1 , wherein the first fluid port is in the form of a suction port regardless of the rotational direction of the inner rotor claim 1 , and the second fluid port is in the form of a pressure port regardless of the rotation direction of the inner rotor.6. A ...

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Номер записи: 60
31-03-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220099094A1
Автор: CHOI Yongkyu, KIM Taekyoung, PARK JUNGHOON
Принадлежит:

A scroll compressor includes an oil circulation pipe having one end inserted through a casing to be connected to an oil storage space inside the casing and another end connected to a suction passage for supplying refrigerant from outside of the casing to a compression chamber, an oil circulation valve disposed between the both ends of the oil circulation pipe to selectively open or close the oil circulation pipe, and a controller to control an opening or closing operation of the oil circulation pipe to reduce or eliminate frictional loss due to a shortage of oil by adjusting an oil level of the oil storage space at an initial operation. 1. A scroll compressor comprising:a casing that defines an oil storage space in a lower portion of an inner space of the casing;a motor disposed in the inner space of the casing;a fixed scroll disposed within the inner space of the casing, wherein the motor and the fixed scroll are arranged along an axial direction;an orbiting scroll engaged with the fixed scroll and configured to perform an orbiting motion relative to the fixed scroll, the orbiting scroll being configured to define a compression chamber together with the fixed scroll during the orbiting motion;a rotating shaft coupled to the motor and to the orbiting scroll;a refrigerant suction pipe that is connected from an outside of the casing to the compression chamber through the casing, the refrigerant suction pipe defining a suction passage configured to supply refrigerant from the outside of the casing to the compression chamber;an oil circulation pipe having a first end connected to the oil storage space through the casing and a second end connected to the suction passage;an oil circulation valve disposed between the first end and the second end of the oil circulation pipe, the oil circulation valve being configured to selectively open and close the oil circulation pipe; anda controller configured to control the oil circulation valve to be selectively opened and closed.2. ...

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Номер записи: 61
25-03-2021 дата публикации

Driving Structure of Three-Axis Multi-Stage Roots Pump

Номер: US20210088044A1
Автор: LI Yue, Rong Yi, Shen Miaole
Принадлежит:

A driving structure of a three-axis multi-stage Roots pump comprises a pump body, wherein a gear end cover is mounted at one side of the pump body, an air outlet end moving bearing air sealing unit is mounted on the other side of the pump body, and the bearing end cover is mounted on the pump at the side of the pump body; a driving axis, a first driven axis and a second driven axis are further provided inside the pump body, and the driving axis is connected with the first driven axis and the second driven axis through the gear, respectively; and both ends of the driving axis, the first driven axis and the second driven axis are movably connected to an air inlet end gear mechanical seal driving unit and an air outlet end moving bearing air sealing unit, respectively. The present invention overcomes the deficiencies of the prior art, a fixed bearing limiting unit not only plays a radial supporting role, strengthens the rigidity of an independent axis, but also reduces the diameter of the axis, and at the same time, evenly distributes to the two axial ends in the axial deformation process, avoiding deformation in a single direction, reducing the amount of displacement by nearly half, and also improving the sealing efficiency of the system. 1112323143156561. A driving structure of a three-axis multi-stage Roots pump , comprising a pump body () , wherein: one side of the pump body () is mounted with an air inlet end gear mechanical seal driving unit () , a gear end cover () is mounted on an outer surface of the air inlet end gear mechanical seal driving unit () , the gear end cover () is fixedly mounted on a side end surface of the pump body () , a motor connecting base () is fixedly mounted on the outer surface of the gear end cover () , the other side of the pump body () is mounted with an air outlet end moving bearing air sealing unit () , a bearing end cover () is mounted on the outer surface of the air outlet end moving bearing air sealing unit () , and the bearing ...

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Номер записи: 62
25-03-2021 дата публикации

Pump Housing Structure of Three-Axis Multi-Stage Roots Pump

Номер: US20210088046A1
Автор: LI Yue, Rong Yi, Shen Miaole
Принадлежит:

A pump housing structure of a three-axis multi-stage Roots pump is provided, comprising a first-stage pump housing, a second-stage pump housing and a third-stage pump housing, wherein the first-stage pump housing is provided with a first center axial hole, a first left axial hole and a first right axial hole; a fixed bearing end cover is mounted on the side of the first-stage pump housing, three fixed bearing chambers are provided on the surface of the fixed bearing end cover; the second-stage pump housing is provided with a second center axial hole, a second left axial hole and a second right axial hole, the third-stage pump housing is provided with a third center axial hole, a third left axial hole and a third right axial hole, and the end surface at the outer side of the third-stage pump housing is fixedly mounted with a non-driving end bearing end cover. The present invention can accommodate and fix three axes through three fixed bearing chambers, respectively. Moreover, since the sum of the axial lengths of the second-stage pump housing and the third-stage pump housing is equal to the axial length of the first-stage pump housing, it not only can strengthen the center stiffness of the three axes of the Roots pump, but also can ensure that the total axial expansion is evenly divided, reducing the cumulated amount of thermal expansion at the end of the axis. 11231456567619110101110456. A pump housing structure of a three-axis multi-stage Roots pump , comprising a first-stage pump housing () , a second-stage pump housing () and a third-stage pump housing () , wherein: the first-stage pump housing () is provided with a first center axial hole () , a first left axial hole () and a first right axial hole () , the first center axial hole () and the first left axial hole () form a first-stage rotor pump chamber () capable of accommodating a pair of first-stage Roots rotor axes , the first right axial hole () is an independent closed axial hole , one side of the first- ...

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Номер записи: 63
02-04-2015 дата публикации

Scroll Type Fluid Machine

Номер: US20150093275A1
Автор: KANEMOTO Yoshiyuki, YAMAZAKI Shumpei
Принадлежит:

To fasten an auxiliary crank for prevention of autorotation of an orbiting scroll to a compressor-casing side bearing in a scroll compressor, a tool must access from a motor side to a compressor casing so as to fasten the auxiliary crank to the compressor-casing side bearing. Therefore, fastening between the auxiliary crank and the bearing cannot be made after a motor section and a compressor body are fastened together. This necessitates the steps of: separating the compressor body from the motor section; fastening the auxiliary crank to the compressor casing; and then fastening the compressor body and the motor section together. A compressor-motor integrated scroll compressor cannot be assembled in sequential steps, entailing increased assembly costs and lowered maintenability. 1. A scroll type fluid machine comprising:a motor housing accommodating a motor for driving a compressor;a compressor casing accommodating the compressor;a fixed scroll disposed in the compressor casing;an orbiting scroll driven via a driving shaft of the motor and defining a compression chamber as positioned in opposed relation to the fixed scroll; anda plurality of auxiliary crankshafts for preventing the autorotation of the orbiting scroll,wherein the plural auxiliary crankshafts are retained by a plurality of first auxiliary crank bearings mounted to the compressor casing and a plurality of second auxiliary crank bearings mounted to the orbiting scroll, respectively,the motor has a stator, anda plurality of notches or hole structures are formed on the motor housing at places between the stator and the first auxiliary crank bearings.2. The scroll type fluid machine according to claim 1 , wherein the number of the notches or the hole structures equals the number of the auxiliary crankshafts.3. The scroll type fluid machine according to claim 1 , wherein a part of the notch or the hole structure is on the compressor casing.4. The scroll type fluid machine according to claim 1 , wherein an ...

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Номер записи: 64
29-03-2018 дата публикации

PUMPS AND HYDRAULIC CIRCUITS INCLUDING VENTURI ASSEMBLY

Номер: US20180087425A1
Автор: Carr Charles, Grimes David J.
Принадлежит: Micropump, Inc., a Unit of IDEX Corporation

A hydraulic circuit includes a pump in fluid communication with a reservoir containing a liquid to be pumped. The pump includes an inlet and an outlet. The hydraulic circuit also includes a venturi pump in fluid communication with the reservoir and with the outlet of the pump, and an injection valve including a cooling feature. The injection valve is in fluid communication with the outlet of the pump, and is configured to dispense liquid supplied to the injection valve by the pump. The cooling feature is in fluid communication with the venturi pump. The pump is configured to produce a first flow of liquid, and the hydraulic circuit is configured to supply a first portion of the first flow of liquid to the injection valve for dispensing by the injection valve and a second portion of the first flow of liquid to the venturi pump. 1. A hydraulic circuit , comprising:a pump in fluid communication with a reservoir containing a liquid to be pumped, the pump including an inlet and an outlet;a venturi pump in fluid communication with the reservoir and with the outlet of the pump;an injection valve including a cooling feature, the injection valve being in fluid communication with the outlet of the pump and configured to dispense liquid supplied to the injection valve by the pump, the cooling feature being in fluid communication with the venturi pump;wherein the pump is configured to produce a first flow of liquid, and the hydraulic circuit is configured to supply a first portion of the first flow of liquid to the injection valve for dispensing by the injection valve and a second portion of the first flow of liquid to the venturi pump.2. The hydraulic circuit of claim 1 , wherein the venturi pump is configured to produce a second flow of liquid from the reservoir and combine the second flow of liquid with the second portion of the first flow of liquid to produce a venturi pump liquid flow.3. The hydraulic circuit of claim 2 , wherein the hydraulic circuit is configured to ...

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Номер записи: 65
29-03-2018 дата публикации

FUEL PUMP

Номер: US20180087504A1
Автор: FURUHASHI Daiji, SAKAI Hiromi
Принадлежит:

A pump housing includes: a slide surface, along which inner and outer gears are slid; a suction guide passage, which is recessed from the slide surface and guides the fuel at a suction side; a discharge passage, which is recessed from the slide surface-and guides the fuel at a discharge side; and a communication groove, which is recessed from the slide surface and is shaped into an arcuate form that extends along a circumcircle of the inner gear. The communication groove is communicated with the suction groove and the discharge passage through two opposite groove end parts, respectively, of the communication groove. 1. A fuel pump comprising:an outer gear that includes a plurality of internal teeth;an inner gear that includes a plurality of external teeth and is meshed with the outer gear while the inner gear is eccentric to the outer gear; anda pump housing that rotatably receives the outer gear and the inner gear, wherein:when the outer gear and the inner gear are rotated to increase and decrease volumes of a plurality of pump chambers, which are formed between the outer gear and the inner gear, fuel is sequentially drawn into and is discharged from the plurality of pump chambers; and a pair of slide surfaces which hold the outer gear and the inner gear from two opposite sides, respectively, in an axial direction, so that the outer gear and the inner gear are slid along the pair of slide surfaces;', 'a suction guide passage that is recessed from at least one of the pair of slide surfaces and guides fuel at a suction side;, 'the pump housing includesa discharge guide passage that is recessed from the slide surface, at which the suction guide passage is formed, wherein the discharge guide passage guides the fuel at a discharge side;a communication groove that is recessed from the slide surface at which the suction guide passage and the discharge guide passage are formed, wherein the communication groove is shaped into an arcuate form that extends along a ...

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Номер записи: 66
29-03-2018 дата публикации

FORKLIFT, INTERNAL GEAR PUMP, AND AXIAL COMPENSATION COMPONENT THEREOF

Номер: US20180087505A1
Автор: GUO QIANG, Lu Xiaofeng, ZHANG Anqing, ZHANG Liyu
Принадлежит:

The present disclosure provides a forklift, an internal gear pump, and an axial compensation component thereof. The axial compensation component for the internal gear pump is configured to be sandwiched between a pump cover of the internal gear pump and a gear pair of the internal gear pump, and the axial compensation component includes: a floating side plate; and a floating sleeve fixed at a side of the floating side plate far away from the gear pair, in which a part of the floating sleeve is configured to extend into an oil storage tank of the pump cover, the oil storage tank is configured to be in communication with a high-pressure oil area of the internal gear pump, and the floating side plate is configured to press tightly against the gear pair under an oil pressure in the oil storage tank. 117.-. (canceled)18. An axial compensation component for an internal gear pump , configured to be sandwiched between a pump cover of the internal gear pump and a gear pair of the internal gear pump , the axial compensation component comprising:a floating side plate; anda floating sleeve fixed on a side of the floating side plate away from the gear pair,wherein a portion of the floating sleeve is configured to extend into an oil storage tank of the pump cover, the oil storage tank is configured to be in communication with a high-pressure oil region of the internal gear pump, and the floating side plate is configured to press tightly against the gear pair under an oil pressure in the oil storage tank.19. The axial compensation component according to claim 18 , wherein:a guide groove configured to be in communication with the high-pressure oil region of the internal gear pump is formed in a side of the floating side plate facing the gear pair, and an installation groove is formed in a side of the floating side plate facing the pump cover; anda portion of the floating sleeve is disposed in the installation groove via an interference fit, the floating sleeve is provided with a ...

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Номер записи: 67
09-04-2015 дата публикации

SEALING ARRANGEMENT, A CONVEYING DEVICE HAVING A SEALING ARRANGEMENT AND A METHOD FOR OPERATING THE SEALING ARRANGEMENT

Номер: US20150097339A1
Автор: TRIEBE René
Принадлежит: DOVER PUMP SOLUTIONS GROUP (EUROPE) GMBH

The invention relates to a sealing arrangement () for conveying devices, in particular for gear pumps, in which an inner space () can be sealed off from an outer space (), wherein the sealing arrangement comprises at least two parts () each having at least one sealing surface (), wherein the sealing surfaces () comprise: a first seal () along a first, medial perimeter of the sealing surface (), a second seal () along a second, lateral perimeter of the sealing surface (), a recess () between the first seal () and the second seal (), characterized in that the recess () can be connected to a source () of a flushing medium such that the recess () can be actively flushed with the flushing medium. 115.-. (canceled)17. The sealing arrangement as claimed in claim 16 , wherein at least one of the first seal and the second seal comprises an O ring or a spiral seal.18. The sealing arrangement as claimed in claim 16 , further comprising the source claim 16 , wherein the source is configured such that a constant flow of the flushing medium through the recess is maintained or such that a constant pressure of the flushing medium in the recess is maintained.19. The sealing arrangement as claimed in claim 18 , wherein the recess and the source are configured as a closed flushing medium circuit.20. The sealing arrangement as claimed in claim 16 , wherein at least a portion of the recess runs parallel to at least one of the first seal and the second seal.21. The sealing arrangement as claimed in claim 16 , further comprising an inlet point for the flushing medium and an outlet point for the flushing medium claim 16 , said inlet point and outlet point being operatively connected to the recess.22. The sealing arrangement as claimed in claim 16 , wherein the first part is a housing of the conveying device and the second part is a cover on the housing of the conveying device.23. The sealing arrangement as claimed in claim 16 , further comprising a flow sensor measuring a flow of flushing ...

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Номер записи: 68
19-03-2020 дата публикации

Gerotor Pump And Method Of Making Pressure Equalization In A Gerotor Pump

Номер: US20200088191A1
Автор: Becker Uwe, DENFELD Bernd, Schaefer Tilo
Принадлежит:

A gerotor pump having an inner rotor and an outer rotor, which is also the rotor of an electric drive, having a housing and a flange which closes the housing with the motor compartment, the rotor being arranged on a shaft and sealing against the flange at a gap, wherein, in addition to the gap, there is at least one device with which at least a partial pressure compensation takes place between the suction region of the gerotor pump and the motor compartment of the gerotor pump. 1. A gerotor pump having an inner rotor and an outer rotor , which is also the rotor of an electric drive , having a housing and a flange which closes the housing with the motor compartment , the rotor being arranged on a shaft and sealing against the flange at a gap , wherein , in addition to the gap , there is at least one device with which at least a partial pressure compensation takes place between the suction region of the gerotor pump and the motor compartment of the gerotor pump.2. The gerotor pump according to claim 1 , wherein the device is a connection between the motor compartment and the suction region claim 1 , the connection being provided as a bore in the flange.3. The gerotor pump according to claim 1 , wherein the device consists of a cavity in the shaft and connections between the motor compartment and the cavity of the shaft and the cavity of the shaft to the suction region.4. The gerotor pump according to claim 3 , wherein the cavity in the shaft has a taper which serves as a throttle.5. The gerotor pump according to claim 1 , wherein the device consists of a cavity in the shaft and connections between the motor compartment and cavity of the shaft and cavity of the shaft to an eccentric bearing of the gerotor pump.6. The gerotor pump according to wherein at least one of the connections has a reduction in cross-section which serves as a throttle.7. A method for producing a pressure compensation in a gerotor pump according to one of the preceding claims claim 1 , wherein an ...

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Номер записи: 69
19-03-2020 дата публикации

Pressure compensated external gear machine

Номер: US20200088285A1
Автор: Andre Vacca, Divya THIAGARAJAN, Sujan Dhar
Принадлежит: PURDUE RESEARCH FOUNDATION

Devices and systems relating to external gear machines that comprise microsurface shaping on the lateral surfaces of the gear teeth and/or bushing surfaces are provided. Such microsurface shaping may comprise a flat step to linear wedge profile, a flat step to flat step profile, or solely a linear wedge profile. The incorporation of microsurface shaping on the gear teeth and/or bushing plates contributes to improving the lubrication performance within the external gear machine and provides significant benefits, including the improvement of operating efficiency, life, and reliability of the system components. Methods for manufacturing the gear teeth and related bushings are also provided, the methods configured to optimize the overall axial balance within the system.

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Номер записи: 70
09-04-2015 дата публикации

Rotary Expansible Chamber Devices Having Adjustable Arcs of Rotation, and Systems Incorporating the Same

Номер: US20150098851A1
Автор: Feustel Aaron
Принадлежит:

Rotary expansible chamber (REC) devices having one or more working-fluid ports that are adjustable, for example, in size or location. In some embodiments, the variable port mechanisms can be used to control any one or more of a plurality of operating parameters of a REC device independently of one or more others of the operating parameters. In some embodiments, the REC devices can have a plurality of fluid volumes that change in size during rotation of the REC device, and that transition to a zero volume condition during the rotation of the REC device. Systems are also provided that can include one or more REC devices. Methods for controlling various aspects of REC devices, including methods of controlling one or more operating parameters, are also provided. 1. A rotary expansible chamber device , comprising:a first mechanism comprising a first rotary component, said first mechanism partially bounding at least a first volume, said first volume moving with or substantially with rotation of said first rotary component during operation of the rotary expansible chamber device; anda second mechanism interfacing with said first mechanism to substantially or fully bound said first volume along a first arc of inaccessibility; said first arc of inaccessibility has a first extent and a second extent;', 'said first volume changes size during operation of the rotary expansible chamber device; and', 'said rotary expansible chamber device is designed and configured to allow for selective and independent change of said first and second extents of said first arc of inaccessibility so as to independently control the size of said first volume when said first volume is positioned, respectively, at said first and second extents of said arc of inaccessibility., 'wherein2. A rotary expansible chamber device according to claim 1 , wherein said rotary expansible chamber device has a second arc of inaccessibility claim 1 , the rotary expansible chamber device further comprising:a third ...

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Номер записи: 71
09-04-2015 дата публикации

SCREW-TYPE POSITIVE DISPLACEMENT MACHINE

Номер: US20150098853A1
Автор: ILTCHEV Théodore, Müller Didier
Принадлежит:

A screw-type positive displacement machine includes a housing with a first rotor and a second rotor which are mounted to rotate in the housing and which are driven in directions which are the opposite of one another. The positive displacement machine has a first motor and a second motor arranged in a drive casing and connected to the housing in such a way that the first rotor is driven by the first motor and the second rotor is driven by the second motor. Typically, the first motor and/or the second motor is an asynchronous motor. 1. Screw-type positive displacement machine comprising a housing with a first rotor and a second rotor mounted to rotate in the housing and driven in directions opposite of one another ,characterized in that the positive displacement machine comprises a first motor and a second motor arranged in a drive casing and connected to the housing in such a way that the first rotor is driven by the first motor and the second rotor is driven by the second motor.2. Positive displacement machine according to claim 1 , characterized in that the first motor and/or the second motor is an asynchronous motor.341. Positive displacement machine according to claim 1 , characterized in that the rotary part of the first motor is connected to the first rotor and/or the rotary part (″) of the second motor is connected to the second rotor.4. Positive displacement machine according to claim 1 , further comprising a first synchronization wheel and a second synchronization wheel claim 1 , which mesh with one another claim 1 , connected to the first rotor and second rotor respectively.5. Positive displacement machine according to claim 4 , characterized in that a contact surface between the first synchronization wheel and the second synchronization wheel is not lubricated.6. Positive displacement machine according to claim 4 , characterized in that the surface of the teeth of the first synchronization wheel and/or of the second synchronization wheel is covered by a ...

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Номер записи: 72
01-04-2021 дата публикации

Internal gear pump

Номер: US20210095566A1
Автор: Hiroaki HIGASHIOKA, Kazuhiro TOEN, Takahiro Yamamoto, Takato OGASAWARA, Yoshiaki YUZAWA, Yuichi Suzuki
Принадлежит: Subaru Corp

An internal gear pump includes an outer rotor having internal teeth, an inner rotor rotatably disposed inside the outer rotor and having external teeth engaging with the internal teeth, and a pump housing. The pump housing includes: a holding recess rotatably holding the outer rotor and having a wall on which an outer peripheral face of the outer rotor is to slide; an inlet to take in a fluid into pump chambers defined between the inner rotor and the outer rotor; an outlet to discharge the fluid from the pump chambers; a case groove provided on the wall and to hold the fluid; and a joint groove provided on an upper land face defined between a trailing end of the inlet and a leading end of the outlet and on which the internal teeth and the external teeth are to slide.

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Номер записи: 73
01-04-2021 дата публикации

GEAR PUMP

Номер: US20210095663A1
Автор: SAKAI Shinya, Yoshimura Mitsuhiro
Принадлежит:

A gear pump includes: an inner rotor having external teeth; an outer rotor having a tubular inner housing portion in which the inner rotor is rotatably housed in an eccentric state, and internal teeth meshing with the external teeth; a first core having a tubular rotor housing portion in which the inner and outer rotors are housed, and a flange portion projecting radially outward from a tube wall of the rotor housing portion; a board-shaped second core having a contact portion in contact with the flange portion in an axial direction, and closing an opening of the rotor housing portion; and a housing opposing the second core and made of a resin. A gap is formed between opposing surfaces of the second core and the housing in a state where the flange portion is in contact with the contact portion and the housing opposes the second core. 1. A gear pump comprising:an inner rotor having external teeth;an outer rotor having a tubular inner housing portion in which the inner rotor is rotatably housed in an eccentric state, and internal teeth that mesh with the external teeth;a first core having a tubular rotor housing portion in which the inner rotor and the outer rotor are housed, and a flange portion projecting radially outward from a tube wall of the rotor housing portion;a board-shaped second core having a contact portion that is in contact with the flange portion in an axial direction, and closing an opening of the rotor housing portion; anda housing disposed so as to oppose the second core and made of a resin, whereina gap is formed between opposing surfaces of the second core and the housing in a state where the flange portion and the contact portion are in contact with each other and the housing is disposed so as to oppose the second core.2. The gear pump according to claim 1 , further comprising:a fastening member inserted into fastening holes provided in the flange portion, the contact portion, and the housing and fastening the first core, the second core, and the ...

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Номер записи: 74
26-06-2014 дата публикации

Rotary pump and brake device having the same

Номер: US20140178236A1
Автор: Kazuhide Uchida, Kazunori Uchiyama, Naoki Hakamada, Takahiro Yamaguchi, Tomoaki Kawabata, Yasuhiro Kawase
Принадлежит: Advics Co Ltd, Denso Corp, Nippon Soken Inc

A rotary pump includes a first side plate and a second side plate between which an outer rotor and an inner rotor are arranged. The second side plate has a concave portion on a surface adjacent to a maximum gap portion relative to a drive shaft. The concave portion is located in an outer teeth passing section which is defined between a line on which a teeth tip of an outer teeth part of the inner rotor passes in response to rotation of the inner rotor and a line on which a teeth bottom of the outer teeth part of the inner rotor passes in response to rotation of the inner rotor. The concave portion communicates with one of a plurality of gap portions while the inner rotor is rotated.

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Номер записи: 75
26-03-2020 дата публикации

A beverage dispensing machine and a gear pump therefor

Номер: US20200095991A1
Автор: Thomas LISBY
Принадлежит: Pumps Aps, Pumps Aps C/o Hansen/forchhammer Aps

A gear pump for a beverage dispensing machine, has a pump chamber, and a driving gear wheel meshing with a driven gear wheel inside the pump chamber.

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Номер записи: 76
21-04-2016 дата публикации

Dual-screen movement converter

Номер: US20160108911A1
Автор: Anderson Chris, Sprocq Raynald
Принадлежит:

A dual-screw movement converter, in which a movement converter between a drive organ includes a screw fixed in translation and driven in rotation, having threads, a nut connected in translation to the receptor organ, having first threads engaging with the threads of the screw and second threads. A sleeve coaxially surrounds the nut, fixed in rotation and translation with respect to the screw and having threads with which the second threads of the nut engage. To the nut, slaved by its second threads to the threads of the sleeve, screw communicates a combined movement of rotation and translation whose translation component along an axis is transmitted to the receptor organ. 1. A screw-operated movement converter between a drive organ and a receptor organ , comprising:a screw having an axis of rotation, fixed in translation and driven in rotation, and having threads;a nut connected in translation to the receptor organ and having first threads engaging with the threads of the screw and second threads; anda sleeve coaxially surrounding the nut and fixed in rotation and in translation with respect to the screw and having threads with which the second threads of the nut engage;wherein the screw, driven in rotation, communicates to the nut, slaved by the second threads to the threads of the sleeve, a combined movement of rotation and translation whose translation component along the axis of rotation is transmitted to the receptor organ.2. The converter of claim 1 , wherein the first threads of the nut are interior threads and the screw has corresponding exterior threads.3. The converter of claim 1 , wherein the second threads of the nut have a length less than one half-turn.4. The converter of claim 1 , wherein the threads of the sleeve are composed of one or more thread segments of different pitch.5. The converter of claim 3 , wherein the second threads of the nut have the shape of a curvilinear parallelogram whose large sides claim 3 , slightly curved claim 3 , are ...

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Номер записи: 77
19-04-2018 дата публикации

Electromagnetic only vane coordination of a cat and mouse engine

Номер: US20180106151A1
Автор: Anatoli GALIN, Natalia Galin, Oleksandr GALIN, Volodymyr GALIN
Принадлежит: Individual

A rotary-vane internal combustion engine of the cat and mouse or scissor type with coordinated rotation of two co-axial shafts with position sensors creating chambers of variable volume for intake, compression, power and exhaust strokes. A reversible electric generator motor on at least one of the shafts with an electronic control system for current, an energy storage unit and electrical load. The total work done and angular speed is calculated or empirically determined while an alternating accelerating or decelerating torque is applied for a continuous, uniform rotation cycle.

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Номер записи: 78
19-04-2018 дата публикации

TRIPLE GEAR PUMP AND FLUID SUPPLYING DEVICE

Номер: US20180106253A1
Автор: MASUDA Seiei, TAKAMIYA Kenji
Принадлежит: IHI CORPORATION

A gear pump is comprised of a driving gear, a first driven gear and second driven gears mutually in mesh; a housing accommodating them and defining a flow path including a first suction port, a second suction port, a first pressure port and a second pressure port; a floating comprising a thrust face bearing a floating force exerted by fluids and first, second and third pressure-receiving faces respectively oriented in a direction opposed to the thrust face; a first pressurizing chamber having fluid connection with the first pressure port or the second pressure port to exert pressure on the first pressure-receiving face; a second pressurizing chamber having fluid connection with the first suction port to exert pressure on the second pressure-receiving face; and a third pressurizing chamber having fluid connection with the second suction port to exert pressure on the third pressure-receiving face. 1. A gear pump comprising:a driving gear rotatable about a driving shaft, and first and second driven gears respectively meshing with the driving gear to follow rotation of the driving gear;a housing accommodating the driving gear, the first driven gear and the second driven gear, and defining a flow path including first and second suction ports capable of sucking fluids, a first pressure port employing rotation of the driving gear and the first driven gear to pressurize and discharge the fluid from the first suction port, a second pressure port employing rotation of the driving gear and the second driven gear to pressurize and discharge the fluid from the second suction port;a floating bearing supporting the driving gear so as to allow the driving gear to rotate about the driving shaft and being capable of floating along the driving shaft, and comprising a thrust face bearing a floating force exerted by the fluids along the driving shaft and first, second and third pressure-receiving faces respectively oriented in a direction opposed to the thrust face;a first pressurizing ...

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Номер записи: 79
30-04-2015 дата публикации

PUMP APPARATUS WITH SWITCHING VALVE AND DRIVING POWER TRANSMISSION DEVICE

Номер: US20150114790A1
Автор: Yamamori Motoyasu
Принадлежит: JTEKT CORPORATION

A pump apparatus with a switching valve includes an actuator that is rotationally driven, a pump, a switching valve and a driving power interrupting device. The pump discharges a fluid sucked by rotational driving of the actuator. The switching valve is changed in phase by the rotational driving of the actuator so as to be switchable among a plurality of destinations of the fluid discharged from a pump chamber of the pump. The driving power interrupting device for a valve is switchable between a state where rotational driving power of the actuator is transmitted to the switching valve and a state where the rotational driving power of the actuator is interrupted. 1. A pump apparatus with a switching valve , comprising:an actuator that is rotationally driven;a pump that discharges a fluid sucked by rotational driving of the actuator;a switching valve that is changed in phase by the rotational driving of the actuator so as to be switchable among a plurality of destinations of the fluid discharged from a pump chamber of the pump; anda driving power interrupting device for a valve that is switchable between a state where rotational driving power of the actuator is transmitted to the switching valve and a state where the rotational driving power of the actuator is interrupted.2. The pump apparatus with a switching valve according to claim 1 , whereinthe driving power interrupting device for a valve transmits the rotational driving power of the actuator in one rotational direction to the switching valve and interrupts the rotational driving power of the actuator in the other rotational direction with respect to the switching valve.3. The pump apparatus with a switching valve according to claim 1 , whereinthe actuator rotationally drive the pump with the rotational driving power of the actuator in one rotational direction, andthe driving power interrupting device for a valve transmits the rotational driving power of the actuator in the other rotational direction to the ...

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Номер записи: 80
20-04-2017 дата публикации

Method For Operating A Pump

Номер: US20170107984A1
Автор: Georges Maguin, Jan Hodgson, Yves KOPP
Принадлежит: Continental Automotive GmbH

A pump includes a pump housing, an inlet, an outlet, a rotatable eccentric, a deformable element between housing and eccentric and a delivery channel from inlet to outlet formed by the deformable element and the housing. The deformable element is pressed against the housing in sections by the eccentric forming a movable seal of the channel and a closed volume in the channel being movable along the channel from inlet to outlet to pump the liquid by rotating the eccentric. A method for operating the pump includes a) setting a liquid quantity to be pumped, b) determining a temperature of the deformable element, c) determining a parameter considering the temperature from step b), the parameter representing a dependence between movement of the eccentric and pump capacity and d) pumping the liquid quantity set in step a) by adapting an operating mode of the pump considering the parameter from step c).

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Номер записи: 81
11-04-2019 дата публикации

Remanufacturing a transmission pump assembly

Номер: US20190107108A1
Автор: Edwin J. Waterbury
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A transmission pump is be removed from service and remanufactured into a remanufactured transmission pump. A first gear assembly is removed from the pump. A bore of the pump is machined from a first depth to a greater second depth. A second gear assembly is installed in the machined bore. The second gear assembly has a same horizontal geometry and a greater axial depth than the first gear assembly.

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Номер записи: 82
30-04-2015 дата публикации

COMPONENTS FOR COMPRESSORS HAVING ELECTROLESS COATINGS ON WEAR SURFACES

Номер: US20150118090A1
Автор: Lachey Carl Joseph, Maurer Eric Anthony
Принадлежит:

Carbon dioxide compressors having one or more coatings with wear surfaces having electroless surface coatings are provided. Alternatively, propane compressors are contemplated having wear surface coatings. The coating is electrolessly applied and may comprise nickel and wear resistant particles, such as boron nitride. The electroless surface coatings for use with compressor machines improve corrosion and wear resistance, as well as anti-friction properties for compressors processing COor CHcontaining refrigerants. In certain aspects, a scroll machine has an Oldham coupling and/or lower bearing comprising aluminum and has an electroless surface coating comprising nickel boron nitride particles disposed on one or more wear surfaces. In other aspects, a reciprocating compressor has a wear surface, such as on a connecting rod and/or piston coated with an electrolessly applied nickel and boron nitride particle layer. Methods for making the electroless surface coatings are also provided. 1. A compressor comprising:a compressor component comprising aluminum and having at least one wear surface with an electroless surface coating comprising nickel having a hardness of greater than or equal to about 40 to less than or equal to about 63 on a Rockwell C Hardness Scale, wherein the compressor is configured to process a refrigerant selected from the group: carbon dioxide, propane, and combinations thereof, wherein the compressor component having the at least one wear surface with the electroless surface coating is capable of use for at least greater than or equal to about 1,000 hours of compressor operation.2. The compressor of claim 1 , wherein the compressor is a scroll compressor further comprising:a first scroll member having a discharge port and a first spiral wrap;a second scroll member having a second spiral wrap, the first and second spiral wraps being mutually intermeshed; anda motor for causing the second scroll member to orbit with respect to the first scroll member, ...

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Номер записи: 83
26-04-2018 дата публикации

VARIABLE SPEED MULTI-STAGE PUMP

Номер: US20180112660A1
Автор: Rhoden William E.
Принадлежит:

A multi-stage gear pump includes a first pump stage, a second pump stage, and a variable speed gearbox including an input and an output, wherein the input is rotationally coupled to the first pump stage and the input rotates at a first rotational speed, and the output is rotationally coupled to the second pump stage and rotates at a second rotational speed, wherein a variable gear ratio determines the second rotational speed relative to the first rotational speed. 1. A multi-stage gear pump , comprising:a first pump stage;a second pump stage; anda variable speed gearbox including an input and an output, wherein the input is rotationally coupled to the first pump stage and the input rotates at a first rotational speed, and the output is rotationally coupled to the second pump stage and rotates at a second rotational speed, wherein a variable gear ratio determines the second rotational speed relative to the first rotational speed.2. The multi-stage gear pump of claim 1 , further comprising a gearbox controller to adjust the variable gear ratio.3. The multi-stage gear pump of claim 2 , further comprising an electronic engine controller to provide at least one operating parameter to the gearbox controller.4. The multi-stage gear pump of claim 3 , wherein the gearbox controlled adjusts the variable gear ratio in response to the at least one operating parameter.5. The multi-stage gear pump of claim 1 , wherein the first pump stage is a main pump stage.6. The multi-stage gear pump of claim 1 , wherein the first pump stage is an actuator pump stage.7. The multi-stage gear pump of claim 1 , wherein the second pump stage is a main pump stage.8. The multi-stage gear pump of claim 1 , wherein the second pump stage is an actuator pump stage.9. The multi-stage gear pump of claim 1 , further comprising a boost stage claim 1 , wherein the boost stage is rotationally coupled to the first pump stage.10. The multi-stage gear pump of claim 1 , further comprising a boost stage claim 1 , ...

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Номер записи: 84
26-04-2018 дата публикации

GEAR PUMP DEVICE

Номер: US20180112662A1
Автор: Hakamada Naoki, Hashiba Takashi, Kawabata Tomoaki, Naganuma Takahiro
Принадлежит: ADVICS CO., LTD.

In the present invention, polishing lines are connected to an outer circumferential high-pressure region, but are not connected to each area that is a low-pressure region. In this configuration, the polishing lines are connected to the outer circumferential high-pressure region where there is high discharge pressure, so high-pressure brake fluid is introduced within the polishing lines . Therefore, a pushback effect is obtained, wherein gear pumps and are pushed back on the basis of the high-pressure brake fluid pressure. Furthermore, the polishing lines are connected to the outer circumferential high-pressure region but are not connected to each area that is a low-pressure region, so high-pressure can be maintained within the polishing lines , and a reduction in the pushback effect can be prevented. Accordingly, a decrease in the loss torque reduction effect can be prevented, and the loss torque can be further reduced. 1. A gear pump device comprising:a gear pump which has an outer rotor having an inner tooth portion and an inner rotor meshed with the outer rotor while forming a plurality of void portions and performs a suction/discharge operation of a fluid by rotating the outer rotor and the inner rotor based on rotation of a shaft inserted into a center hole of the inner rotor;a case that forms a housing portion that houses the gear pump; anda sealing mechanism disposed between the case and one of pump shaft direction end surfaces of the gear pump and, in the gear pump, partitioning a low-pressure side including a suction side sucking a fluid and a periphery of the shaft, and a high-pressure side including a discharge side discharging the fluid and a part of gaps between an outer periphery of the outer rotor and the case,the other end surface of the pump shaft direction end surfaces in the gear pump being brought into contact with a sliding surface of the case based on pressing force of the sealing mechanism to seal a portion between the low-pressure side and ...

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Номер записи: 85
09-04-2020 дата публикации

IDLER GEAR FOR POSITIVE DISPLACEMENT GEAR PUMP

Номер: US20200109710A1
Автор: CRAWFORD MICHAEL ROBERT, Hall John Howard, IEHL VICTOR CHRISTIAN
Принадлежит: VIKING PUMP, INC.

One or more techniques and/or systems are disclosed for a gear pump for low speed transfers of viscous liquid slurries promotes growth of suspended particles, such as sugar crystals, by avoiding crushing of the particles. The pump includes a rotor gear in mesh with an eccentrically mounted idler gear supported on a boss of a pump head that includes a crescent seal extending into an opening resulting from the eccentricity of the idler gear relative to the rotor gear. The idler gear contains a radially extending land on each tooth profile, symmetrically oriented on adjacently spaced pairs of teeth. The lands, configured to minimize crushing of crystals passing through the pump, engage mating rotor teeth for sealing between inlet and outlet ports of the pump. To promote crystal growth, the lands cover only 10% to 30% of profile surface area of each tooth. To minimize gear tooth wear, the lands are axially staggered between successive adjacent pairs of teeth. 1. A positive displacement gear pump comprising:a casing defining a casing interior, the casing comprising an inlet port and an outlet port for transferring a target fluid though the casing interior;an external rotor gear supported within an inboard end of the casing by a rotor shaft, the external rotor gear comprising radially inwardly oriented teeth;a head positioned at an outboard end of the casing; andan internal idler gear rotationally supported on the head about an idler gear axis within the casing interior, the internal idler gear comprising radially outwardly oriented teeth, the internal idler gear being operably disposed on the head in a fixed, radially eccentric, relationship with the external rotor gear, and at least a portion of the internal idler gear teeth operably meshing with at least a portion of the external rotor gear teeth; two radially oriented surfaces respectively extending between a root and a tip of the idler gear tooth;', 'a land comprising a substantially planar surface rising from the ...

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Номер записи: 86
09-04-2020 дата публикации

Pump Assembly and Method for Producing a Pump Assembly

Номер: US20200109774A1
Автор: De Nicolò Alessandro, Franceschi Omar, Hecher Heinrich, Innerbichler Matthias, Malogowski Tomasz, Steiner Arno
Принадлежит:

A pump assembly which comprises at least one housing and two gear wheels as conveying means. The housing comprises at least one base plate and a cover element, which are interconnectable in order to form a pressure chamber. An outer circumferential surface of each of the two gear wheels has a toothing, and said gear wheels intermesh via the toothings in order to convey a fluid. The gear wheels are arranged along an axial direction in the pressure chamber between the base plate and the cover element. The pressure chamber is formed in the housing at least by two bores. The first gear wheel is arranged in a first bore and the second gear wheel is arranged in a second bore. A plurality of centering pins are provided for aligning the bores and the gear wheels with respect to one another, wherein all said centering pins are arranged exclusively in the cover element or exclusively in the base plate. 1. A pump assembly comprisinga housing with at least one base plate and a cover element, which are interconnectable in order to form a pressure chamber; andtwo gear wheels, wherein an outer circumferential surface of the first gear wheel has a first toothing with a first outside diameter and an outer circumferential surface of the second gear wheel has a second toothing with a second outside diameter, wherein the gear wheels intermesh via the toothings in order to convey a fluid; wherein the gear wheels are arranged along an axial direction in the pressure chamber between the base plate and the cover element;wherein the pressure chamber is formed in the housing at least by two bores, wherein the first gear wheel is arranged in a first bore with a first inside diameter and the second gear wheel is arranged in a second bore with a second inside diameter, wherein a plurality of centering pins are provided for aligning the bores and the gear wheels with respect to one another, wherein all said centering pins are aligned with respect to one another exclusively via the cover element ...

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Номер записи: 87
13-05-2021 дата публикации

Pump Assembly

Номер: US20210140427A1
Автор: De Nicolò Alessandro, Franceschi Omar, Hecher Heinrich, Innerbichler Matthias, Malogowski Tomasz, Steiner Arno
Принадлежит:

A pump assembly, which comprises at least one housing and two gear wheels as transfer means as well as a drive shaft. The housing comprises at least one base and one cover element, which can be connected together in order to constitute a pressure chamber. Each of the two gear wheels has a toothing on an outer circumferential surface and mesh with one another via the toothing in order to transfer a fluid. The gear wheels are arranged in an axial direction between the base and the cover element in the pressure chamber. The drive shaft extends into the housing in the axial direction via an opening in the cover element. The first gear wheel is arranged on a first bearing bush, wherein the first bearing bush is mounted only in the base. The first gear wheel is connected to the drive shaft via a formfitting connection in a circumferential direction. 2. The pump assembly as claimed in claim 1 , wherein the drive shaft is arranged in a radial direction with a free clearance with respect to the first gear wheel and the first bearing bush.3. The pump assembly as claimed in claim 1 , wherein the drive shaft is arranged mounted exclusively outside the housing with respect to a force acting in a radial direction.4. The pump assembly as claimed in claim 1 , wherein the formfitting connection is constituted by an inner circumferential surface of the first gear wheel and an outer circumferential surface of the drive shaft.5. The pump assembly as claimed in claim 1 , wherein the drive shaft and the first gear wheel or the drive shaft and the first bearing bush constitute an abutment against displacement in the axial directions.6. The pump assembly as claimed in claim 1 , wherein the first bearing bush is connected to the base via a press fit.7. The pump assembly as claimed in claim 1 , wherein the first bearing bush is connected in an integrally bonded manner to and formed integrally with the base.8. The pump assembly as claimed in claim 1 , wherein at least the base and the cover ...

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Номер записи: 88
17-07-2014 дата публикации

Planetary Gear Pump

Номер: US20140200109A1
Автор: Leo James Stocco
Принадлежит: Individual

A planetary gear pump comprising a central gear and a plurality of planet pairs provides a space efficient transducer between hydraulic and mechanical energy. When it is configured as a pump, a high flow rate is provided. When it is configured as an actuator, a high torque is provided. A dual-stage configuration may be used as a low speed high torque actuator with high energy efficiency, high pitch velocity, and low slippage.

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Номер записи: 89
07-05-2015 дата публикации

COMPRESSOR

Номер: US20150125330A1
Автор: Ebara Toshiyuki, Hotta Tadashi, Inoue Takashi, KAMIYA Haruo, KOMURA Masato
Принадлежит:

A check valve includes a valve seat portion and a reed valve element and is received in a receiving hole of an intermediate pressure refrigerant supply passage that is placed adjacent to a flow inlet of an injection port, through which a refrigerant of an intermediate pressure is injected into a compression chamber. A center of the flow inlet of the injection port is offset from a central axis of a valve seat passage formed in the valve seat portion. 1. A compressor , comprising: a low pressure refrigerant supply passage that conducts refrigerant, which has a low pressure;', 'a compression chamber that compresses the refrigerant supplied from the low pressure refrigerant supply passage to a high pressure, which is higher than the low pressure, and discharges the compressed refrigerant out of the compression chamber; and', 'an intermediate pressure refrigerant supply passage that is communicatable with the compression chamber through an injection port to inject refrigerant, which has an intermediate pressure that is higher than the low pressure and is lower than the high pressure, into the compression chamber; and, 'a housing that includesa check valve that includes a valve seat portion and a reed valve element and is received in a receiving hole of the intermediate pressure refrigerant supply passage, which is placed adjacent to a flow inlet of the injection port, wherein:the valve seat portion has a valve seat and a valve seat passage, wherein the valve seat passage is located radially inward of the valve seat and extends through the valve seat portion to conduct the refrigerant therethrough;a center of the flow inlet of the injection port is offset from a central axis of the valve seat passage;the reed valve element is seatable against the valve seat to close the valve seat passage and is liftable from the valve seat to open the valve seat passage; anda check valve chamber is formed in the receiving hole at a location between the valve seat portion and a wall ...

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Номер записи: 90
05-05-2016 дата публикации

GEAR PUMP BEARINGS WITH HYBRID PADS

Номер: US20160123390A1
Автор: Heitz Steven A., Kovach Brandon T.
Принадлежит:

A gear pump includes a drive gear mounted to a first gear shaft, a driven gear meshable with the drive gear, a plurality of journal bearings, and a first porting path. The first porting path is adapted to provide high pressure fluid communication from a discharge of the gear pump to a first hybrid pad location for a first journal bearing selected from the plurality of journal bearings, the first hybrid pad location circumferentially adjacent to a first fluid film location. Each location is disposed annularly between an inner surface of the first journal bearing, and an outer surface of the first gear shaft or second gear shaft corresponding to the first journal bearing. 1. A gear pump comprising:a drive gear mounted to a first gear shaft;a driven gear meshable with the drive gear, the driven gear mounted to a second gear shaft; a drive-side pressure loaded journal bearing disposed about a first longitudinal end of the first gear shaft;', 'a drive-side stationary journal bearing disposed about a second opposing longitudinal end of the first gear shaft;', 'a driven-side pressure loaded journal bearing disposed about a first longitudinal end of the second gear shaft; and', 'a driven-side stationary journal bearing disposed about a second opposing longitudinal end of the second gear shaft; and, 'a plurality of journal bearings including at leasta first porting path adapted to provide high pressure fluid communication from a discharge of the gear pump to a first hybrid pad location for a first journal bearing selected from the plurality of journal bearings, the first hybrid pad location circumferentially adjacent to a first fluid film location, and each location disposed annularly between an inner surface of the first journal bearing, and an outer surface of the first gear shaft or second gear shaft corresponding to the first journal bearing.2. The gear pump of claim 1 , wherein the porting path comprises:a discharge face cut on the first journal bearing for receiving ...

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Номер записи: 91
03-05-2018 дата публикации

GEAR PUMP AND METHOD FOR REALISING IT

Номер: US20180119695A1
Автор: PANNO ALESSANDRO
Принадлежит:

A gear pump comprising:—a pair of gears () able to interact with a fluid crossing the pump ();—a housing seating () of said pair of gears (), said housing seating () comprising a rest plane () of a shim ();—a delivery conduit () which develops from said housing seating () and comprising an inlet mouth (). The inlet mouth () of the delivery conduit () is at a distance from an intersection () between a rest plane () of the shim () and remaining parts of the housing seating (). 23. The pump according to claim 1 , characterised in that said housing compartment () comprises:{'b': 31', '32', '20', '2', '31', '30, 'a first and a second base (, ) which develop transversally to a direction () parallel to the rotation axis of at least one of said gears (); said first base () comprising said rest plane ();'}{'b': 33', '31', '32', '60', '6', '33', '7, 'a lateral surface () interposed between the first and the second base (, ); said inlet mouth () of the delivery conduit () being entirely fashioned in said lateral surface () and the minimum distance from said intersection () being greater than 10 millimetres.'}353231331310311304. The pump according to claim 2 , characterised in that it comprises a cover () which defines said second base () opposite said first base () and which contributes to delimiting the housing seating (); said first base () comprising a recess () having a bottom () defined by said rest plane () of the shim ().4333046. The pump according to claim 2 , characterised in that said lateral surface () and said rest plane () of the shim () have a surface finish that is better than a surface finish of an initial portion of said delivery conduit ().52. The pump according to claim 1 , characterised in that said pair of gears () are a pair of cogwheels which enmesh with one another and interact with the fluid crossing the pump.78. The method according to claim 6 , characterised in that the step of realising the first body () comprises steps of:{'b': 80', '80', '31', '33 ...

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Номер записи: 92
25-08-2022 дата публикации

POSITIVE DISPLACEMENT PUMP SHAFT BEARING ASSEMBLY

Номер: US20220268275A1
Автор: BAYER Sandro
Принадлежит: BigRep GmbH

The application relates to a positive displacement pump shaft bearing assembly that comprises a shaft having a shaft lodging and a shaft rotational axis. The assembly further comprises a housing having a housing lodging and one rolling element that is located between said lodgings. The rolling element comprises a rolling element centre point that coincides with the shaft rotational axis. 110202510030354025354090100. A positive displacement pump shaft bearing assembly () , comprising a shaft () having a shaft lodging () and a shaft rotational axis () , a housing () having a housing lodging () and one rolling element () located between said lodgings ( , ) , wherein the rolling element () comprises a rolling element center point () that coincides with the shaft rotational axis ().2102535505152. The shaft bearing assembly () according to claim 1 , wherein at least one of the shaft lodging () or the housing lodging () has one lodging form selected among: a conical-shape () claim 1 , a sphere-shape () claim 1 , or a sphere-recessed-shape ().310402535. The shaft bearing assembly () according to claim 1 , wherein the rolling element () has point or line contact with the shaft lodging () or the housing lodging ().4102535100. The shaft bearing assembly () according to claim 1 , wherein the shaft lodging () and/or the housing lodging () is adjustable in position parallel to the shaft rotational axis ().51025352530. The shaft bearing assembly () according to claim 1 , wherein the shaft lodging () and/or the housing lodging () is threadedly connected with the shaft () or the housing ().610602535406025352030. The shaft bearing assembly () according to claim 1 , wherein at least one distance element () is located between the shaft lodging () or the housing lodging () and the rolling element () claim 1 , or at least one distance element () is located between the shaft lodging () and/or the housing lodging () and the shaft () and/or the housing ().710702535. The shaft bearing ...

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Номер записи: 93
14-05-2015 дата публикации

ROTARY PUMP OR MOTOR WITH ORBITAL PISTON ASPIRATION, METHODS OF PRODUCTION AND USES THEREOF

Номер: US20150132167A1
Автор: Forgy Fritz, JR. John, Novak
Принадлежит:

Rotary components are described that include a housing comprising a rotor having a rotor working face and a gate having a gate working face and a pocket; at least one vane, wherein the vane is coupled to the rotor; at least one wiper coupled to the vane; a plurality of endplates coupled to the housing, wherein at least one of the endplates is a float plate; an intake chamber; and an outlet chamber. In addition, methods of aspirating a working medium by utilizing the rotary component having at least one float plate includes pulling the working medium into the intake chamber, depositing the working medium into a working chamber that is located between the intake chamber and the outlet chamber; maintaining the working medium in a stationary position until the vane sweeps around toward the outlet chamber; accumulating the working medium into the outlet channel of the outlet chamber; and centrifugally ejecting the working medium into the outlet chamber and out of the system. 123-. (canceled)24. A method of aspirating a working medium by utilizing a rotary component , the method comprising: a housing comprising a rotor having a rotor working face and a gate having a gate working face and a pocket;', 'at least one vane, wherein the vane is coupled to the rotor;', 'at least one wiper coupled to the vane;', 'a plurality of endplates coupled to the housing, wherein at least one of the endplates is a float plate;', 'an intake chamber; and', 'an outlet chamber;, 'providing a rotary component comprisingpulling the working medium into the intake chamber, depositing the working medium into a working chamber that is located between the intake chamber and the outlet chamber;maintaining the working medium in a stationary position until the vane sweeps around toward the outlet chamber;accumulating the working medium into the outlet channel of the outlet chamber; andcentrifugally ejecting the working medium into the outlet chamber and out of the system.25. The method of claim 24 , ...

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Номер записи: 94
21-05-2015 дата публикации

MOTOR-DRIVEN COMPRESSOR

Номер: US20150139818A1
Автор: NAGATA Yoshiki
Принадлежит: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

A motor-driven compressor includes a compression unit that includes movable and fixed scrolls and a compression chamber, an electric motor that includes a rotor and drives the compression unit, a motor drive circuit that drives the electric motor, an injection port that draws intermediate pressure refrigerant into the compression chamber, a controller that performs rotation control on the rotor, and a voltage detector that detects a terminal voltage of the electric motor. The compression unit compresses low pressure refrigerant drawn into the compression chamber to discharge high pressure refrigerant. The controller is configured to output a stop instruction to deactivate the rotation control of the rotor, determine a rotation condition of the rotor based on the voltage detected by the voltage detector after outputting the stop instruction, and perform, based on the determination, restart preparation control that includes outputting a lock instruction to electrically stop rotation of the rotor. 1. A motor-driven compressor comprising:a compression unit including a movable scroll, a fixed scroll, and a compression chamber formed by engagement of the movable scroll and the fixed scroll, wherein the compression unit compresses low pressure refrigerant drawn into the compression chamber to discharge high pressure refrigerant;an electric motor including a rotor, wherein the electric motor drives the compression unit;a motor drive circuit that drives the electric motor;an injection port that draws intermediate pressure refrigerant into the compression chamber;a controller that performs rotation control on the rotor; anda voltage detector that detects a terminal voltage of the electric motor, wherein output a stop instruction to deactivate the rotation control of the rotor,', 'determine a rotation condition of the rotor based on the voltage detected by the voltage detector after outputting the stop instruction, and', 'perform, based on the determination, restart ...

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Номер записи: 95
01-09-2022 дата публикации

SCROLL COMPRESSOR

Номер: US20220275802A1
Автор: ENDOU Takeshi, HIMEDA Akira, Kato Katsumi, MAEJIMA Yukiko, MIZUSHIMA Yasuo, NAKATANI Eitarou
Принадлежит:

A scroll compressor includes fixed and movable scrolls including fixed and movable side end plates and fixed and movable side wraps. The fixed-side end plate includes a first fixed-side passage that communicates with a high-pressure space, and a second fixed-side passage to supply lubricating oil from the high-pressure space to a compression chamber formed between the scrolls. The movable-side end plate includes a movable-side groove that intermittently allows communication between the first fixed-side passage and the second fixed-side passage. The compression chamber includes a first compression chamber, and a second compression chamber located inside the first compression chamber. The second fixed-side passage includes a first fixed-side hole that intermittently communicates with the movable-side groove, and a second fixed-side hole that communicates with the first fixed-side hole and intermittently communicates with the second compression chamber. 1. A scroll compressor comprising:a fixed scroll including a fixed-side end plate and a fixed-side wrap; anda movable scroll including a movable-side end plate and a movable-side wrap, a first fixed-side passage that communicates with a high-pressure space, and', 'a second fixed-side passage configured to supply lubricating oil from the high-pressure space to a compression chamber formed between the fixed scroll and the movable scroll,, 'the fixed-side end plate including'}the movable-side end plate including a movable-side groove that intermittently allows communication between the first fixed-side passage and the second fixed-side passage while the movable scroll revolves relative to the fixed scroll, a first compression chamber located on an outermost side, and', 'a second compression chamber located inside the first compression chamber and located between an outermost side surface of the fixed-side wrap and an inner side surface of the movable-side wrap, and, 'the compression chamber including'} a first fixed-side ...

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Номер записи: 96
02-05-2019 дата публикации

Fluid Pump With Shim And Related Methods Of Manufacture

Номер: US20190128256A1
Автор: Enke Olaf
Принадлежит:

A fluid pump includes a gear housing with a pocket wall and a base. The pocket wall and the base define a pocket that projects into the gear housing from a pocket surface. The fluid pump also includes a first gear rotatably positioned in the pocket. The first gear is spaced from the pocket surface by a first gap. The fluid pump also includes a second gear rotatably positioned in the pocket that engages the first gear. The second gear is spaced from the pocket surface by a second gap. The fluid pump also includes a selected shim that is selected from a plurality of shims in a shim set. The selected shim has a thickness that results in a desired clearance between the selected shim and the first face or the second face. 1. A fluid pump comprising:a gear housing including a pocket wall and a base, the pocket wall and the base defining a pocket that projects into the gear housing from a pocket surface;a first gear rotatably positioned in the pocket, the first gear including a first face that is spaced from the pocket surface by a first gap;a second gear rotatably positioned in the pocket and engaging the first gear, the second gear including a second face that is spaced from the pocket surface by a second gap; anda selected shim positioned in the pocket over the first gear and the second gear, wherein the selected shim is selected from a plurality of shims in a shim set by comparing thicknesses of the shims in the plurality of shims to the first gap or the second gap, the selected shim having a thickness that results in a desired clearance between the selected shim and the first face or the second face.2. The fluid pump of wherein the desired clearance is a minimum clearance.3. The fluid plump of wherein the pocket wall includes two rounded portions to define a pocket with a first circular depression and a second circular depression claim 1 , the first circular depression configured to receive the first gear and the second circular depression configured to receive the ...

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Номер записи: 97
23-04-2020 дата публикации

Curvilinear circular-arc tooth gears for use in external gear pumps

Номер: US20200124047A1
Автор: Williams Logan
Принадлежит:

A curvilinear circular-arc-toothed (CCAT) gear for improving gear performance and reducing noise while avoiding axial loads common to helical gears includes an annular gear body; and a gear tooth having a hybrid gear tooth profile comprising one or more curves configured to provide a sweep of the gear tooth space by a mating gear tooth while maintaining smooth contact during gear mesh, and wherein the gear tooth extends along an axial length of the gear body along an axial profile. 1. A curvilinear circular-arc-toothed (CCAT) gear for improving gear performance and reducing noise while avoiding axial loads common to helical gears , the CCAT gear comprising:an annular gear body; anda set of gear teeth, with each tooth extending radially away from the gear body and extending axially along the gear body, andwherein the gear tooth has a cross-sectional profile transverse to the rotational axis of the gear body, the cross-sectional profile formed from a hybridization of two or more curves, the two or more curves defining a tooth tip, a tooth flank, and a tooth root, andwherein the gear tooth has an axial tooth profile defining a circumferential positioning of the gear tooth on the gear body relative to a respective axial positioning of the gear tooth on the gear body, the axial tooth profile being generally symmetric across the midplane of the gear to reduce axial loading on gears induced by gear meshing.2. The CCAT gear of claim 1 , wherein the axial tooth profile is continuously differentiable.3. The CCAT gear of claim 1 , wherein the axial tooth profile is fully symmetric about an axial mid-plane of the gear to eliminate axial loading from gear meshing.4. The CCAT gear of claim 1 , wherein the axial tooth profile has an initial helix angle at each end of the gear.5. The CCAT gear of claim 1 , wherein the axial tooth profile is curvilinear.6. The CCAT gear of claim 5 , wherein the axial tooth profile is a half-period sinusoid function.7. The CCAT gear of claim 1 , ...

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Номер записи: 98
19-05-2016 дата публикации

VARIABLE FLOW ENGINE OIL PUMP

Номер: US20160138591A1
Автор: Ho Ying-Yi, Ma Huei-Shen
Принадлежит:

A variable flow engine oil pump has a first seat, a second seat attached to the first seat, and a regulating valve assembly and a pressurizing assembly mounted in the second seat. An eccentric wheel of the pressurizing assembly meshes with a plug of the regulating valve assembly. With the plug driving the eccentric wheel to rotate by an angle, a volume flow rate of engine oil output by the engine oil pump can be adjusted. Elements used for adjusting the output of the engine oil are reduced, and manufacturing cost and assembling complexity of the engine oil pump are lowered accordingly. Moreover, since the regulating valve assembly drives the pressurizing assembly directly, the regulating valve assembly can drive the pressurizing assembly efficiently. 1. A variable flow engine oil pump comprising: a first axial hole formed through the first seat; and', 'an oil return channel formed in an inner surface of the first seat;, 'a first seat having'} a second axial hole formed through the second seat and aligning with the first axial hole;', 'an oil inlet formed through the second seat;', 'an oil outlet formed through the second seat;', 'an oil regulating chamber formed in the second seat, being elongated, and having an inner end;', 'a guiding channel formed in the second seat and communicating with the inner end of the oil regulating chamber; and', 'an oil return hole formed in an inner surface of the second seat, communicating with the oil regulating chamber, and corresponding in position to and communicating with the oil return channel;, 'a second seat attached to the first seat and having'}an oil inlet chamber formed in the first seat and the second seat;an oil outlet chamber formed in the first seat and the second seat and communicating with the guiding channel; [ an open end;', 'a closed end facing and selectively sealing the guiding channel;', 'a receiving recess formed in the open end of the plug; and', 'a driving toothed portion formed on an outer surface of the ...

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Номер записи: 99
03-06-2021 дата публикации

Screw spindle pump

Номер: US20210164466A1
Автор: Florian Popp, Jürgen Metz, Kristin Lissek
Принадлежит: Leistritz Pumpen GmbH

A screw spindle pump for delivering a cooling liquid for cooling a battery and/or power electronics or a cleaning or supply liquid of a motor vehicle, including a housing in which a working spindle, which is coupled to a drive assembly, and at least one running spindle, which meshes with the latter, are accommodated, and including a feather key-like support element, which is fixed by the housing and against which the working spindle and the running spindle are axially supported. In the housing, there is provided at least one aperture through which it is possible to insert the support element, which, in the assembled position, is received with one end in the aperture and with the other end in a receiving part situated diametrically opposite the aperture, wherein the support element is secured via at least one securing element which closes the aperture at the outside.

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Номер записи: 100