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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 7881. Отображено 100.
19-04-2012 дата публикации

Six-blade biaxial rotary positive-displacement pump

Номер: US20120093673A1
Автор: Akitomo Yokoi, Hideyuki Okano, Kouiti Kume, Masafumi Takeda, Takashi Yokoi, Toshiaki Kato, Yasuna Yokoi, Yoshinobu Ito
Принадлежит: Anlet Co Ltd

A six-blade biaxial rotary positive-displacement pump includes a casing formed with a suction port and a discharge port, a pair of rotors accommodated in the casing and having rotor shafts rotatably mounted on housings fixed to opposed ends of the casing, respectively. Each rotor is formed with six blades extending radially equiangularly about the rotor shaft. Each blade is formed so as to have a constant thickness in a rotational direction of each rotor. Each blade has an apex and a valley, and a distance between the apex and the valley is set so as to range from three to five times larger than the thickness of each blade.

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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
14-06-2012 дата публикации

Enhanced elastomeric stator insert via reinforcing agent distribution and orientation

Номер: US20120148432A1
Автор: Harold A. Sreshta, Jiinjen A. Sue, Joshua A. Sicilian, Stefan Butuc
Принадлежит: National Oilwell Varco LP

A progressive cavity type motor or pump including a stator insert with a reinforcing agent dispersed in a manner to improve properties of the stator insert. The reinforcing agent may be a fiber, nanotube, metal, ceramic, or polymer. A dispersing agent may be used to obtain a homogenous distribution. A magnetic reinforcing agent may be incorporated into a stator insert. The stator insert is subjected to a magnetic field to orient the magnetic reinforcing agent in a particular orientation. The magnetic field may also reposition the magnetic reinforcing agent within the stator insert. The stator insert may be formed by injection molding, transfer, or compression molding among other methods.

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Номер записи: 3
19-07-2012 дата публикации

No-Go Tag Systems and Methods for Progressive Cavity Pumps

Номер: US20120181042A1
Автор: Denis J. Blaquiere, Tariq Ahmed
Принадлежит: National Oilwell Varco LP

A stator for a progressive cavity pump comprises a stator housing having a central axis, a first end, and a second end opposite the first end. In addition, the stator comprises a stator liner disposed within the stator housing. The stator liner has a first end and a second end opposite the first end. The first end of the stator liner is axially spaced from the first end of the stator housing. Further, the stator comprises a tag insert positioned in the stator housing between the first end of the stator housing and the first end of the stator liner. The tag insert has a through passage defining a radially inner surface that includes a tag shoulder.

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Номер записи: 4
23-08-2012 дата публикации

Pump assemblies with freeze-preventive heating

Номер: US20120211093A1
Автор: David J. Grimes
Принадлежит: Micropump Inc

Pumps are disclosed that include a pump housing and at least one movable pumping element situated in the housing. The pumping element(s) are magnetically driven by magnetically coupling an external magnet driver (e.g., a stator) to a driven magnet located in the housing. A control circuit selectively operates the stator and a heat-producing element, so as to energize the heat-producing element especially in a potential freezing condition when the pump is not being otherwise operated. Thus, the fluid in the pump is prevented from freezing, and freeze-related pump damage is avoided. The heat-producing element can be the stator itself energized differently from when the stator is used for driving the pump.

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Номер записи: 5
30-08-2012 дата публикации

Seal retaining sleeve for gear pump

Номер: US20120219445A1
Автор: Satish Shantilal Shah, Timothy P. Walgren
Принадлежит: Hamilton Sundstrand Corp

A shaft assembly includes a shaft with a first radial shoulder and a second radial shoulder along a shaft axis. A seal retaining sleeve is defined around the shaft axis to position a shaft seal. A retainer plate at least partially between the first radial shoulder and the second radial shoulder is adjacent to the seal retaining sleeve to position and provide access to the seal retaining sleeve and shaft seal.

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Номер записи: 6
20-09-2012 дата публикации

Downhole Backspin Retarder for Progressive Cavity Pump

Номер: US20120237380A1
Автор: Jorge Robles-Villa
Принадлежит: Weatherford Lamb Inc

A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller and shaft can rotate relative to one another so the drive string can rotate in a drive direction without impediment from the impeller. In an engaged condition, the impeller rotates with the shaft in a backspin direction. In this way, vanes on the impeller can retard the backspin of the shaft and drive string by attempting to force the lifted fluid column flowing downhole past the impeller back uphole. The retarder can use a pin and slot arrangement or an arrangement of engageable teeth to engage the impeller to the rotation of the shaft.

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Номер записи: 7
04-10-2012 дата публикации

Meat processing assembly

Номер: US20120252332A1
Автор: Andrew W. Maddux, Emile A. Burgers, Kenneth B. Arnote, Liansuo Xie, Michael S. Simpson
Принадлежит: Marel Meat Processing Inc

An improved processing assembly having a meat emulsion pump connected to a stuffing horn. The stuffing horn positioned to fill casings with meat emulsion which form a strand of processed meat that is received by a twister, then a linker, and subsequently deposited on a conveyor.

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Номер записи: 8
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: 9
15-11-2012 дата публикации

Pump-motor assembly

Номер: US20120288380A1
Автор: Anthony P. Tata, Edward L. Kaiser, Michael C. Muir, Michael P. Fannin, Peter Bostwick, Ryan Van Tiem
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A pump-motor assembly includes a motor housing, a motor disposed substantially within the motor housing, and a pumping element driven by the motor. A pressurized region is filled with a fluid pressurized by the pumping element, and a fluid passage is in fluid communication with the pressurized region and the motor housing. Fluid flows from the pressurized region to the motor housing and at least partially submerges the motor.

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Номер записи: 10
03-01-2013 дата публикации

System and method for driving a pump

Номер: US20130004337A1
Автор: Kevin D. ANDERSON
Принадлежит: Solar Turbines Inc

A system for driving a pump includes a gas turbine engine having an output shaft, and a torque converter including an input shaft coupled to the output shaft of the gas turbine engine and an output shaft configured to be coupled to an input shaft of a pump. The system further includes a controller coupled to the torque converter, wherein the controller is configured to receive a signal indicative of a pressure at at least one of a pump inlet and a pump outlet, and control a speed of the output shaft of the torque converter based on the signal indicative of pressure.

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Номер записи: 11
28-02-2013 дата публикации

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

Номер: US20130048384A1
Автор: Andrei Plop, Brian P. Jarvis, Brian Williams, Daniel Alvarado, Geoffrey Downton, Gokturk Tunc, Lance Underwood, Lawrence Lee, Maxim Pushkarev, Nigel Wilcox, Peter Thomas Cariveau, Shunetsu Onodera, Warren Askew, William Murray
Принадлежит: Smith International Inc

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

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Номер записи: 12
28-02-2013 дата публикации

Electric pump unit

Номер: US20130052058A1
Автор: Nobutsuna Motohashi, Takafumi Uemoto
Принадлежит: JTEKT Corp

A pump body is formed of a pump housing and a pump plate provided in front of the pump housing. A motor housing is fixed to a rear end of the pump housing, and accommodates a pump driving electric motor. A bearing device that supports a motor shaft includes a first bearing that is arranged in a closed-end hole formed in a rear face of the pump plate and supporting a front end portion of the motor shaft, and a second bearing that is arranged radially inward of a cylindrical bearing support portion formed in the pump housing and extending inside the motor housing and that supports a middle portion of the motor shaft. A pump rotor is arranged between the first bearing and the second bearing.

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Номер записи: 13
28-02-2013 дата публикации

Downhole Motors and Pumps with Improved Stators and Methods of Making and Using Same

Номер: US20130052067A1
Автор: Carsten HOHL, Harald Grimmer
Принадлежит: Baker Hughes Inc

In one aspect, the disclosure provides an apparatus for use downhole that in one configuration includes a stator including a housing having an inner contour and a liner lining the inner contour of the stator housing, wherein thickness of the liner is non-equidistant around the inner contour of the housing.

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Номер записи: 14
14-03-2013 дата публикации

Hydraulic transport device and electrohydraulic control module

Номер: US20130064699A1
Автор: Andreas Albert, Joachim Buhl, Marco Grethel, Martin Staudinger, Ronald Glas
Принадлежит: Conti Temic Microelectronic GmbH, Schaeffler Technologies AG and Co KG

A hydraulic transport device for transporting a hydraulic medium. The device includes at least one externally toothed gear pump that is driven by an electric motor, and a control device attached to the pump. A passive rotational speed detection element is arranged in the pump and interacts with an active rotational speed detection element that is arranged in the control device to detect the rotational speed of the pump shaft.

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Номер записи: 15
02-05-2013 дата публикации

Urea solution pump structure

Номер: US20130108484A1
Автор: Buyeol Ryu, Dong Myoung RYOO, Jong-Sang NOH, Jongman LEE, Junhyuck Jang, Pil Seon Choi
Принадлежит: Donghee Industrial Co Ltd, Hyundai Motor Co, Kia Motors Corp

A urea solution pump structure may include a housing portion connected to an external connector and covering an upper portion of the pump structure, a motor portion disposed at a lower portion of the housing portion and including a rotor and a stator, a case portion receiving the motor portion therein, and a pump portion disposed at a lower portion of the case portion and fluid-isolated from the motor portion, wherein the pump portion may be formed with an inlet and an outlet for a fluid, wherein a hollow cover may be provided at a lower portion of the case portion for separating the pump portion and the motor portion, and an oil seal unit may be mounted at a lower portion of the hollow cover for sealing a rotating shaft of the rotor which penetrates through the hollow cover.

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Номер записи: 16
23-05-2013 дата публикации

TWO-STAGE MEDIUM-PRESSURE SCREW-TYPE AIR COMPRESSOR SET

Номер: US20130129548A1
Автор: Chen Gang, Wang Leijie, Wu Changhong, Wu Jiangwei, Yin Xibo, Zhang Jiongyan, Zhuang Zhongping
Принадлежит: NINGBO BAOSI ENERGY EQUIPMENT CO.,LTD

A two-stage medium-pressure screw air compressor comprises a primary screw compressor () and a secondary screw compressor () communicating with the gas-liquid separator () via the first gas-liquid inlet (). A first oil outlet () is connected to a mid section of a gas-liquid separator (). The oil is injected into the lubricating components of the compressor is the first oil outlet (), a first filter (). A secondary oil-water separator () is connected to the first oil outlet () of the gas-liquid separator (), the second oil-water separator () has an upper separating tank () and a lower separating tank. The water and the impurities contained in the lubricating oil can be eliminated at a largest extent, so as to create essential condition thr ensuring the screw compressor to operate continuously, stably and safely and provide high operational reliability, safety and long service life. 1. A two-stage medium-pressure screw air compressor , comprising:a primary screw compressor driven by a motor;a secondary screw compressor also driven by the motor;a gas-liquid separator having a side wall with a first gas-liquid inlet connected to the side wall and a first oil outlet connected to a mid section of the side wall, the secondary screw compressor communicating with the gas-liquid separator via the first gas-liquid inlet;{'sub': ':', 'a plurality of oil distributors for receiving processed oil from the gas-liquid separator via the first oil outlet, a first filtera cooler and an oil tube;'}a secondary oil-water separator connected to the first oil outlet of the gas-liquid separator, the secondary oil-water separator having an upper separating tank with a top and a bottom and a lower separating tank with a top and a bottom, a plurality of brackets being mounted on the lower separating tank and the upper separating tank being mounted on top of the plurality of brackets;a second oil inlet connecting to the top of the upper separating tank, the second oil inlet having an ...

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Номер записи: 17
20-06-2013 дата публикации

Pump System

Номер: US20130156625A1
Автор: Schumann Laverne
Принадлежит:

One embodiment of the pump system includes a cover housing and a main body affixed to one another for operation. A drive and idler gear may be mounted within a gear chamber in the main body for rotation there about, and inlet fluid may be provided on both the axial and radial surfaces of the drive and idler gear. The cover housing may be outfitted with one pressure relief channel or with two pressure relief channels of different geometric sizes and with different actuation pressures. The drive and/or idler gear may have dimples fashioned on an axial surface thereof, and lubricant troughs may be fashioned at various locations in the main body and/or the cover housing to reduce wear within the pump. 1. A pump comprising a rotating and a stationary component having at least one interface there between , wherein said at least one interface is configured with a plurality of dimples.2. The pump according to wherein said rotating component is further defined as a rotary gear set comprising:a. a rotor gear, wherein said rotor gear is formed with a plurality of dimples on an axial surface of said rotor gear; andb. a stator ring gear, wherein said stator ring gear is formed with a plurality of dimples on an axial surface of said stator ring gear.3. The pump according to wherein said stationary component is further defined as comprising a main body surrounding the periphery of said stator gear and a cover housing that may be cooperatively engaged with said main body.4. The pump according to wherein said stator ring gear further comprises a plurality of stator radial bores therein.5. The pump according to wherein said pump further comprises a plurality of rotor grooves fashioned on an axial surface of said rotor gear and a plurality of stator grooves fashioned on an axial surface of said stator ring gear.6. The pump according to wherein said plurality of rotor grooves is further defined as four rotor grooves oriented at zero claim 5 , ninety claim 5 , one hundred-eighty claim 5 ...

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Номер записи: 18
18-07-2013 дата публикации

SCREW ROTOR FOR A SCREW TYPE VACUUM PUMP

Номер: US20130183185A1
Автор: Dirscherl Jürgen, Gitmans Frank, Prasse Markus, Rüster Gerhard
Принадлежит: VACUUBRAND GMBH + CO KG

A screw rotor is for a screw type vacuum pump, preferably for a screw type vacuum pump having a pumping capacity less than 50 m/h. The rotor has a rotor shaft, a rotor core which rests on the rotor shaft, and a rotor cover which rests on the rotor core and at least partially encloses the rotor core. The rotor core is made of a material having a thermal conductivity greater than 100 W/m·K, preferably a thermal conductivity greater than 200 W/m·K. A screw type vacuum pump has correspondingly designed rotors. 1. A screw rotor for a screw type vacuum pump , the screw rotor comprising:a rotor shaft, a rotor core which rests on the rotor shaft, and a rotor cover which rests on the rotor core and at least partially encloses the rotor core,wherein the rotor core is made of a material having a thermal conductivity greater than 100 W/m·K.2. The rotor according to claim 1 , whereinthe rotor shaft is made of a material having a thermal conductivity greater than 100 W/m·K.3. The rotor according to claim 2 , whereinthe rotor shaft and the rotor core are designed as one piece.4. The rotor according to claim 1 , whereinthe rotor core extends into the screw threads of the rotor.5. The rotor according to claim 4 , whereinthe rotor core extends into the screw threads of the rotor only in an area of the rotor which during operation faces an outlet of a pump chamber.6. The rotor according to claim 1 , whereinthe rotor cover is made of a material which has a low thermal conductivity compared to the thermal conductivity of the rotor core and of the rotor shaft.7. The rotor according to claim 6 , whereinthe rotor cover is made of plastic.8. The rotor according to claim 7 , whereinat least one of the rotor core, parts thereof, and the rotor shaft is made of copper, aluminum, or alloys of these materials.9. The rotor according to claim 1 , whereinthe rotor is configured for a one-sided bearing at only one end of the rotor shaft.10. The rotor according to claim 9 , whereinin an area of the ...

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Номер записи: 19
15-08-2013 дата публикации

Oil pump

Номер: US20130209302A1
Автор: Hisashi Ono, Shinji Kazaoka
Принадлежит: Aisin Seiki Co Ltd

An oil pump includes a capacity adjustment mechanism that changes the pump capacity by moving a tubular body in a tube radial direction, with a pump chamber formed between the tubular body and an outer circumference side of a rotor, a first spring biasing the tubular body in a direction in which pump capacity increases, a control valve that converts oil pressure of the oil pump into control pressure and causes the control pressure to act on the capacity adjustment mechanism, and a second spring biasing a valve body in order to set the control pressure in the control valve. The relationship of the biasing forces of the first and second springs is set so that pump capacity is set to maximum when the engine rotational speed is less than a predetermined value, and so that pump capacity is reduced when the engine rotational speed exceeds a predetermined value.

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Номер записи: 20
22-08-2013 дата публикации

VOLUME RATIO CONTROL SYSTEM AND METHOD

Номер: US20130216414A1
Автор: Comstock Angela Marie, JR. Paul, Kopko William L., Nemit
Принадлежит: Johnson Controls Technology Company

A system and method for controlling the volume ratio of a compressor is provided. The system can use a port () or ports in a rotor cylinder to bypass vapor from the compression chamber to the discharge passage of the compressor. A control valve () can be used to open or close the port or ports to obtain different volume ratios in the compressor. The control valve () can be moved or adjusted by one or more valves that control a flow of fluid to the valve. A control algorithm can be used to control the one or more valves to move the control valve to obtain different volume ratios from the compressor. The control algorithm can control the one or more valves in response to operating parameters associated with the compressor. 1. (canceled)2. A compressor comprising:an intake passage;a discharge passage;a compression mechanism, the compression mechanism being positioned to receive vapor from the intake passage and provide compressed vapor to the discharge passage;a port positioned in the compression mechanism to bypass a portion of the vapor in the compression mechanism to the discharge passage;a valve positioned near the port to control vapor flow through the port;the valve having a first position to permit a first vapor flow from the compression mechanism to the discharge passage, a second position to permit a second vapor flow from the compression mechanism to the discharge passage and a third position to prevent vapor flow from the compression mechanism to the discharge passage;the compressor having a first volume ratio in response to the valve being in the first position, a second volume ratio in response to the valve being in the second position and a third volume ratio in response to the valve being in the third position, the first volume ratio being less than the second volume ratio and the the second volume ratio being less than the third volume ratio;at least one solenoid valve, the at least one solenoid valve being positioned to control a flow of fluid to the ...

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Номер записи: 21
29-08-2013 дата публикации

Coaxial progressive cavity pump

Номер: US20130224053A1
Автор: Wiekamp Jan Hendrik Ate
Принадлежит:

This invention relates a progressive cavity pump with a central feed-through for supplying steam, gas or liquids to the supply side of the pump. For the oil industry this invention enables single well stimulation. Steam can be supplied from the surface to the production zone or below through the central feed-through, heating or pressurizing oil and the surrounding formation, and facilitating production. In heavy oil fields solvents can be pumped down as well. Oil can be pumped up by the progressive cavity pump through the annulus of the connecting coaxial pipe. 1. A progressive cavity pump consisting of in essence one axially uniform rotor of oval shape and sets of two rockers with straight-edged shape and housing , with an isolated cavity through the rotor connecting both sides of the pump , to be used for supplying gas or liquid to the supply side of the pump.2. A progressive cavity pump consisting of in essence one axially uniform rotor of oval shape and two rockers with straight-edged shape and one housing , with an isolated cavity through the rotor connecting both sides of the pump , to be used for supplying gas or liquid to the supply side of the pump.3. A progressive cavity pump of or , where the shape of the rotor changes in axial direction to allow for compression or decompression. The invention is to be applied as pump, with an internal channel through the rotor of the pump, for supplying heating or pressure by steam to the supply side of the pump.1. Objects of the InventionOld, almost depleted, oil wells can be revived if steam is injected. Previously at least one additional steam injection well would be necessary. With this solution single wells can be continuously stimulated by steam injection through, and below, the pump, to heat the formation and to heat the produced oil, thus keeping the viscosity low and the oil flowing more freely. With the same reasoning, the pump can be applied for tarsand and other heavy oil wells.2. Background of the ...

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Номер записи: 22
12-09-2013 дата публикации

Double-screw liquid pump

Номер: US20130236334A1
Автор: Yan Tang
Принадлежит: Shanghai Power Technology Screw Machinery Co Ltd

A double-screw liquid pump is provided, which is applicable to an Organic Rankin Cycle (ORC). The double-screw liquid pump includes a semi-sealed or fully sealed shell, and the shell includes a first cavity and a second cavity isolated from each other. A motor is disposed in the first cavity, and a main body part of a double-screw is disposed in the second cavity. At least one rotor of the double-screw is fixedly connected to a rotor of the motor, and the double-screw rotates through driving of the motor. A liquid refrigerant injection inlet and a refrigerant outlet are disposed on the first cavity, and the motor is cooled through evaporation of a liquid refrigerant; a liquid inlet and a liquid outlet are disposed on the second cavity. In the double-screw liquid pump applied to the ORC provided in the present invention, since a resistance torque of the female rotor is very small, the liquid pump does not wear even when the liquid viscosity is very low, contributing to good reliability, and thereby improving power generation efficiency of the ORC. In addition, the semi-sealed or fully sealed shell can effectively prevent leakage of the refrigerant.

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Номер записи: 23
19-09-2013 дата публикации

Self-Cleaning Screw-Type Centrifugal Wheel Pump with Recirculation Behind the Impeller

Номер: US20130243634A1
Автор: Ciro Robles, Stahle Carl
Принадлежит: FRIDECO AG C/O HIDROTLAL AG

The screw-type centrifugal wheel pump () comprises a pump housing () and a screw-type centrifugal wheel () arranged rotatably within the pump housing () and having a hub () and a blade (), and comprises a rotatable drive shaft () connected to the screw-type centrifugal wheel (), and comprises a cover plate () arranged between the screw-type centrifugal wheel () and a housing rear wall (), wherein the cover plate () has a central opening () through which the hub () or the drive shaft () runs, and wherein an interior space () is formed between the cover plate () and the housing rear wall (), wherein a gap () is formed between the central opening () of the cover plate () and the hub () or the drive shaft (), which gap is connected in fluid-conducting fashion to the interior space (), wherein the cover plate () has at least one aperture (), which is arranged spaced apart from the central opening (), in order to generate a fluid flow (F) which flows into the interior space () via the aperture () and out of the interior space () again via the gap (). 113323320321253320220232221333722322322252024222520222133237242222022520222022371372372aaghahkahagbagaaaaahab. A screw-type centrifugal wheel pump () comprising a pump housing () with a pump inflow opening () and with a housing rear wall () arranged opposite the pump inflow opening () , comprising a screw-type centrifugal wheel () which is rotatably arranged within the pump housing () and which has a hub () and an impeller () , and comprising a rotatable drive shaft () which is connected to the screw-type centrifugal wheel () , and comprising a cover plate () which is arranged between the screw-type centrifugal wheel () and the housing rear wall () , wherein the cover plate () has a central opening () through which the hub () or the drive shaft () extends , and wherein an interior space () is formed between the cover plate () and the housing rear wall () , wherein the cover plate () has a front side () oriented toward the ...

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Номер записи: 24
03-10-2013 дата публикации

Wiper assembly for a pump

Номер: US20130259647A1
Автор: John Edward Stachowiak, Jr.
Принадлежит: Weatherford Lamb Inc

A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.

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Номер записи: 25
17-10-2013 дата публикации

Transmission unit

Номер: US20130274048A1
Автор: Herbert Steinwender
Принадлежит: Magna Powertrain GmbH and Co KG

A transmission unit comprises a planetary wheel set, which comprises a plurality of gearwheel elements and is designed as a pump which effects delivery of hydraulic fluid from a suction zone to a pressure zone of a pump casing containing the planetary wheel set by means of the gearwheel elements. A controllable throttling device is provided in order to selectively throttle a fluid flow pumped between the suction zone and the pressure zone and thereby to brake the gearwheel elements of the planetary wheel set relative to one another. A fluid reservoir, which can be connected simultaneously to the suction zone and to the pressure zone via the throttling device, is arranged in a pump casing interspace formed between a plurality of gearwheel elements of the planetary wheel set.

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Номер записи: 26
31-10-2013 дата публикации

Progressing cavity pump/motor

Номер: US20130287616A1
Автор: Michael J. Guidry, Jr.
Принадлежит: National Oilwell Varco LP

A progressing cavity pump/motor includes a stator ( 12 ) having a metal interior surface ( 14 ) and one or more spiraling internal lobes ( 16 ). The rotor ( 18 ) has a metal exterior surface ( 20 ) and one or more spiraling external lobes ( 22 ) for cooperating with the stator to form progressing cavities between the stator and the rotor during rotation of the rotor. One or both the stator interior surface and the rotor exterior surface include a rough surface ( 30 ) having an Ra greater than 100 micro inches, such that fluid flowing to a gap between the stator and the rotor is disrupted by the rough surfaces to reduce fluid leakage between the stator and the rotor.

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Номер записи: 27
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: 28
02-01-2014 дата публикации

Pump Device

Номер: US20140003981A1
Автор: Chiharu Nakazawa, Toshihiro Koizumi
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

A pump device has a motor rotation shaft and a pump rotation shaft whose end portion is connected to an end portion of the motor rotation shaft and which drives a pump unit. The pump device includes: an outer circumferential seal portion that is arranged at either one or both of radially outer sides of the end portion of the pump rotation shaft and the end portion of the motor rotation shaft so as to overlap with either one or both of the end portion of the pump rotation shaft and the end portion of the motor rotation shaft in axial directions of the pump rotation shaft and the motor rotation shaft and has an outer circumferential seal surface; and a seal unit that makes sliding contact with the outer circumferential seal portion.

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Номер записи: 29
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: 30
09-01-2014 дата публикации

Multiple Segment Lobe Pump

Номер: US20140010698A1
Автор: OConnor Brian J.
Принадлежит:

Designs for multiple segment lobe pumps are shown. The designs include pumps using rotors having two lobes to a plurality of lobes and segments that include two segments to a plurality of segments. Designs for both vertical or straight walled conventional lobed rotors as well as helical lobe rotors are shown. The designs are applicable to a variety of rotors and number of segments. In one particular case the designs enable a three lobe helical pump. 1. A lobe pump comprising:a) a housing having an inlet and an outlet and walls,b) a first shaft and a second shaft, the shafts being elongated cylinders, the first shaft extending beyond a wall of he housing such that it may be rotated by a motor, the shafts fixed within the housing such that their long axes are parallel, the shafts coupled through use of timing gears affixed to a first end of each shaft such that rotation of the first shaft by the motor causes the second shaft to rotate, i) a first lobe rotor having a center, a top surface, a bottom surface, sidewalls and a plurality of lobes symmetrically extending from the center, the lobes extended at a lobe separation angle from one another, the first lobe rotor fixedly attached to the first shaft through the center of the rotor such that rotation of the first shaft causes the first lobe rotor to rotate,', 'ii) a second lobe rotor having a center, a top surface, a bottom surface, sidewalls and a plurality of lobes symmetrically extending from the center, the lobes extended at a lobe separation angle from one another, wherein the first lobe rotor and the second lobe rotor have the same number of lobes and lobe angles, the second lobe rotor fixedly attached to the second shaft through the center of the rotor such that the rotation of the second shaft causes the second rotor to rotate,', 'iii) separation plates positioned above and below the lobe rotors adjacent to the top and bottom surfaces of the lobe rotors, said separation plates acting to physically isolate the ...

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Номер записи: 31
30-01-2014 дата публикации

INTERNAL GEAR PUMPS FOR A HYDRAULIC VEHICLE BRAKING SYSTEM

Номер: US20140030131A1
Автор: Alaze Norbert, Schepp Rene
Принадлежит: ROBERT BOSCH GMBH

An internal gear pump for a slip-controlled hydraulic vehicle braking system includes a pinion, a ring gear, and a filler piece (sickle). The filler piece has an inner part extending in a curved manner in the peripheral direction and an outer part extending in a curved manner in the peripheral direction. The inner part and the outer part are interconnected in a hinged manner on the suction-sided ends. A leg spring is arranged between the inner and outer parts and is configured to separate the inner and outer parts and press against the tops of the teeth of the pinion and the tops of the teeth of the ring gear of the internal gear pump. 1. An internal gear pump for a hydraulic vehicle braking system , comprising:an internally toothed ring gear;an externally toothed pinion arranged eccentrically in the ring gear and configured to mesh with the ring gear in a circumferential section, the pinion and the ring gear forming a crescent-shaped cavity opposite the circumferential section in which the pinion meshes with the ring gear; anda filler piece arranged in the cavity, the filler piece having an inner side on which heads of teeth of the pinion bear against and an outer side on which heads of teeth of the ring gear bear against,wherein the filler piece comprises a leg spring having legs disposed in the circumferential direction, the legs being configured to urge the filler piece inwards and outwards against the heads of the teeth of the pinion and the heads of the teeth of the ring gear.2. The internal gear pump as claimed in claim 1 , wherein the leg spring forms the filler piece and its legs bear against the heads of the teeth of the pinion and the heads of the teeth of the ring gear.3. The internal gear pump as claimed in claim 1 , wherein a yoke of the leg spring is oriented towards a suction side of the internal gear pump.4. The internal gear pump as claimed in claim 1 , wherein the filler piece comprises an inner part having an inner side that bears against the ...

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Номер записи: 32
06-03-2014 дата публикации

ASYMMETRIC LOBES FOR MOTORS AND PUMPS

Номер: US20140064997A1
Автор: Benning Helmut G., Hohl Carsten
Принадлежит: BAKER HUGHES INCORPORATED

An apparatus for use in a wellbore may include a stator having a bore and a rotor disposed in the bore. Either or both of the rotor and the stator may include a layer that has an asymmetrical material property profile along at least a portion of a circumference of that layer. 1. An apparatus for use in a wellbore , comprising:a stator having a bore; anda rotor disposed in the bore, the stator and the rotor cooperating to form at least one fluid chamber and at least one seal at substantially the same time during relative rotation between the rotor and the stator,wherein a layer forming at least a portion of the at least one fluid chamber and portion of the at least one seal has an asymmetrical material property profile.2. The apparatus of claim 1 , wherein: the layer is formed on opposing sides of a lobe associated with the stator claim 1 , and the asymmetrical material property profile is across a circumference of an inner surface of the stator that includes the lobe.3. The apparatus of claim 1 , wherein: the layer is formed on opposing sides of a lobe associated with the rotor claim 1 , and the asymmetrical material property profile is across a circumference of an outer surface of the rotor that includes the lobe.4. The apparatus of claim 1 , wherein the layer is harder at the at least one fluid chamber than at the least one seal.5. The apparatus of claim 1 , wherein the at least one material property is at least one of: (i) hardness claim 1 , (ii) ductility claim 1 , (iii) compressibility claim 1 , (iv) Modulus of elasticity.6. The apparatus of wherein the at least one material property is at least one of: (i) a mechanical property claim 1 , and (ii) a chemical property.7. The apparatus of claim 1 , wherein the layer includes at least one of: (i) elastomeric material claim 1 , (il) a thermo-plastic material claim 1 , (iii) a ceramic material claim 1 , (iv) a metallic material claim 1 , (v) a composite claim 1 , and (vi) a duroplastic material.8. The apparatus of ...

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Номер записи: 33
06-03-2014 дата публикации

Heating/cooling system for indwelling heat exchange catheter

Номер: US20140067027A1
Автор: Stelica Stelea, Wayne Noda
Принадлежит: Zoll Circulation Inc

A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform.

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Номер записи: 34
27-03-2014 дата публикации

High-Performance Oil Pump

Номер: US20140086763A1
Автор: Osterhaus Michael J., Stucky Nathaniel D.
Принадлежит: Melling Tool Company

A high-performance oil pump for pumping oil in an internal combustion engine that eliminates or greatly reduces cavitation in the oil pump, thereby increasing the efficiency and performance of the oil pump. The present invention provides a housing having an inlet for receiving a supply of oil and an outlet for discharging the oil. At least two gears rotatably and matingly are disposed within the housing for pumping the oil from the inlet to the outlet. A pressure regulation circuit is disposed within the housing for balancing oil flow pressure between the inlet and the outlet by redirecting a portion of the oil from the outlet to the inlet when said oil flow pressure reaches a predetermined level at the outlet in order to reduce or eliminate cavitation of oil in the oil pump. 1. A high-performance oil pump for pumping oil in a variable speed internal combustion engine , comprising:an enclosed housing having a first side and a second side, wherein said first side has a single inlet for receiving oil from an oil reservoir and said second side has a single outlet for discharging oil to said internal combustion engine, wherein said inlet has a longitudinal axis;a pair of gears rotatably and matingly disposed within a pumping chamber of said housing for pumping oil from said inlet to said outlet, wherein said pumping chamber has a longitudinal axis;an inlet passageway extending from said inlet to an inlet side of said pumping chamber, wherein said inlet passageway has a longitudinal axis substantially parallel to said longitudinal axis of said pumping chamber and said longitudinal axis of said inlet, wherein said inlet is consistently larger than said inlet passageway from said oil reservoir to said inlet passageway;an outlet passageway extending from an outlet side of said pumping chamber to said outlet, wherein said outlet is larger than said outlet passageway; anda pressure regulating circuit disposed within a bore in said housing redirects a portion of oil from said ...

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Номер записи: 35
27-03-2014 дата публикации

INTERNAL GEAR PUMP, ESPECIALLY FOR A VEHICLE HYDRAULIC BRAKE SYSTEM

Номер: US20140086778A1
Автор: Alaze Norbert, Hach Karl-Heinz, Klein Andreas, Kurz Edgar, Speer Harald
Принадлежит: ROBERT BOSCH GMBH

An internal gear pump includes a separator arranged in a pump chamber of the internal gear pump. The separator divides the pump chamber into a delivery chamber and a suction chamber and is arranged so as to be radially moveable and capable of pivoting. The internal gear pump further includes a bearing ring in which a ring gear of the internal gear pump is rotatably supported such that it can pivot about a pin. A pressure prevailing in the pump chamber when the internal gear pump is in operation acts on the ring gear and the bearing ring with a torque, which acts inwardly from the pin in a circumferential direction to the suction chamber and presses tooth tips of teeth of the ring gear inwards against the separator and presses the separator inwards against tooth tips of teeth of the pinion. 1. An internal gear pump , comprising:an internally toothed ring gear rotatably supported in a bearing;an externally toothed pinion arranged eccentrically in the ring gear and configured to mesh with the ring gear in a circumferential portion; anda separator arranged in a crescent-shaped pump chamber of the internal gear pump, the separator being configured to bear against tooth tips of teeth of the pinion and of the ring gear and to divide the pump chamber into a suction chamber and a delivery chamber, the separator existing between the pinion and the ring gear opposite the circumferential portion in which the pinion meshes with the ring gear,wherein the separator is moveable in a radial direction, andwherein the bearing is supported so that it is configured to pivot about a pivot axis, which is arranged eccentrically in relation to an axis of rotation of the ring gear, so that via the ring gear a pressure of a fluid delivered by the internal gear pump, prevailing in the pump chamber when the internal gear pump is in operation and acting internally on the ring gear, exerts a torque on the bearing, which externally presses the ring gear against the separator.2. The internal gear ...

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Номер записи: 36
10-04-2014 дата публикации

Simplified roots-type blower

Номер: US20140099226A1
Автор: Kelly Ann Williams, William Nicholas Eybergen
Принадлежит: Eaton Corp

The present disclosure relates to a simplified roots-type blower having an improved sound signature. The roots-type blower includes a rotor bore housing having a molded, one-piece polymeric construction. The rotor bore housing defines a first rotor bore and a second rotor bore. The rotor bore housing also defines a first bearing pocket corresponding to the first rotor bore and a bearing pocket corresponding to the second rotor bore axis. The rotor bore housing further defining a timing gear chamber.

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Номер записи: 37
05-01-2017 дата публикации

ROTATING BODY, ROTATING BODY MATERIAL, AND METHOD OF MANUFACTURING ROTATING BODY

Номер: US20170002809A1
Автор: HONDA Naotaka
Принадлежит: Diamet Corporation

A novel rotating body, its material, and manufacturing method thereof, shortening a distance for cutting a bore surface in its axial direction, reducing processing costs, enabling lower-cost manufacture of inner rotor. A metallic rotating body has a bore surface for press-fitting a shaft thereinto, including a cutting-processed portion at first end and an unprocessed portion at second end. The processed portion has an inner diameter formed smaller than the unprocessed portion A chamfer at first end of the bore surface is cut, while a chamfer at the second end not. A bore surface of material processed into the rotating body includes a small-diameter portion at first end and a large-diameter portion at second end. A step is formed between the small- and large-diameter portions with the chamfer formed at second end. 1. A rotating body which is made of metal and provided for press-fitting a shaft thereinto , comprising:a surface of a bore into which the shaft is press-fitted, the surface of the bore including a processed portion that has undergone a cutting processing at a first end, and an unprocessed portion that has not undergone a cutting processing at a second end,wherein the processed portion is formed to have an inner diameter smaller than an inner diameter of the unprocessed portion.2. The rotating body according to claim 1 , further comprising a chamfered portion on both ends of the surface of the bore claim 1 , wherein the chamfered portion at the first end has undergone a cutting processing claim 1 , while the chamfered portion at the second end has not undergone a cutting processing.3. The rotating body according to claim 1 , wherein the rotating body is an inner rotor for an internal gear oil pump.4. A rotating body material which is to be processed into a metallic rotating body for press-fitting a shaft thereinto claim 1 , comprising:a surface of a bore including a comparatively small-diameter portion at a first end, and a comparatively large-diameter ...

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Номер записи: 38
05-01-2017 дата публикации

TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUID UNDER HIGH PRESSURE

Номер: US20170002810A1
Автор: EOM Boon Do, KIM Hee Kyun
Принадлежит:

Disclosed is a trochoid pump for transferring high-viscosity liquids under high pressure. The trochoid pump includes an idler coupled to an inner through-hole inside a housing to be rotated, a rotor inserted into an inside of the idler, and a shaft configured to rotate the rotor, wherein the idler is provided with an inner toothed groove, into which the rotor is inserted and which has a plurality of projecting teeth, and recessed grooves, which are recessed with a predetermined depth along an outer circumferential surface thereof in a circumferential direction. Unlike an existing gear pump or trochoid pump, the trochoid pump for transferring high-viscosity liquids can reduce a viscous friction force, and can reduce the driving power. 1. A trochoid pump comprising:an idler rotatably coupled to an inner through-hole on an inside of a housing, a rotor inserted into an inside of the idler, and a shaft rotating the rotor,wherein the rotor is inserted into the idler and the idler has an inner toothed groove having a plurality of projecting gear teeth formed thereon, and a recessed groove formed on an outer circumference with a predetermined depth in a circumferential direction.2. The trochoid pump according to claim 1 , wherein the at least one recessed groove is formed on a center portion of the outer circumference of the idler claim 1 , and front and rear circular grooves are formed at front and rear ends that come in contact with an end portion of the rotor on an outer circumference of the idler.3. The trochoid pump according to claim 2 , wherein the front and rear circular grooves are formed to be deeper than the recessed groove.4. The trochoid pump according to claim 1 , wherein the outer circumference of the idler is spaced apart from an inner circumference of the inner through-hole of the housing to form a gap between them.5. The trochoid pump according to claim 1 , wherein the rotor is constructed so that a plurality of gears are formed on an outer circumference ...

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Номер записи: 39
07-01-2016 дата публикации

ECCENTRIC SCREW PUMP WITH OVERPRESSURE PROTECTION

Номер: US20160003244A1
Автор: Mueller Thomas, Stracke Roland, STRELOW Guenter, Warkentin Viktor
Принадлежит:

An eccentric screw pump comprising an outer part () and an inner part () therein, one of the parts () being driven rotatably and the other part () being able to move eccentrically relative to the other part (). The screwthreads () of the outer part () extend angularly over less than an entire helix along the axial length (L) of the part, so that during operation pumping chambers that are open to both ends are created, through which sudden pressure relief takes place. 2. The pump according to claim 1 , wherein the screwthreads of the outer part extend angularly only through between 75% and 95% of an entire helix along the axial length of the part.3. The pump according to claim 1 , wherein the outer part is eccentrically movable around the axis of the inner part claim 1 , and the inner part is rotatably driven.4. The pump according to claim 1 , wherein the outer part is made of an elastomeric material and at one of its axial ends is held on the pump housing via an elastic support structure.5. The pump according to claim 1 , wherein the axial length of the outer part is selected such that the pump has a predetermined maximum delivery head. This application is the US-national stage of PCT application PCT/EP2014/000320 filed 6 Feb. 2014 and claiming the priority of German patent application 102013003833.2 itself filed 7 Mar. 2013.The invention relates to a pump for moving a medium to be displaced from an intake end to an output end, comprising an outer part and an inner part arranged therein, one of the parts being driven rotatably and the other part being able to move eccentrically relative to the one part. The inner part has at least one screwthread extending helically and axially, and the outer part has a number of screwthreads that is greater by one than the inner part. The ratio of the number of screwthreads in every cross-section is identical to the ratio of the pitches of the screwthreads, and the outer part and the inner part make contact in such a way that the ...

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Номер записи: 40
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: 41
04-01-2018 дата публикации

Design and Method to Improve Downhole Motor Durability

Номер: US20180003174A1
Автор: Ba Samba, Cariveau Peter T.
Принадлежит:

Rotor and/or stator designs and methods thereof to improve progressive cavity motor or pump durability. In one or more implementations, the rotor may have a variable outer diameter or variable stiffness along an axial length thereof. The stator may similarly have a variable inner diameter or variable stiffness, which may compliment or diverge from the variable outer diameter or variable stiffness of the rotor. 1. A progressive cavity motor or pump , comprising:a stator with an internal axial bore therethrough, the internal axial bore having an inwardly facing surface with axial lobes arranged and designed to form a stator helical profile; anda rotor with an outer surface having axial lobes arranged and designed to form a rotor helical profile that is at least partially complimentary to the stator helical profile; the rotor being rotationally disposed within the internal axial bore of the stator; the axial lobes of the rotor numbering at least one less than the axial lobes of the stator to form a moving chamber between the rotor and stator; the rotor having a diameter that varies along an axial length thereof, the diameter of the rotor proximate an uphole end portion thereof being no greater than at a downhole end portion thereof.2. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor proximate the downhole end portion thereof is greater than at an uphole diameter.3. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor intermediate the uphole end portion and the downhole end portion is a minimum diameter.4. The progressive cavity motor or pump of claim 3 , wherein claim 3 ,rotor stiffness proximate the minimum diameter is less than elsewhere along the axial length of the rotor.5. The progressive cavity motor or pump of claim 1 , wherein claim 1 ,the rotor is constructed of the same materials at the uphole end portion as at the downhole end portion.6. The progressive cavity motor or pump of wherein claim 1 , ...

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Номер записи: 42
04-01-2018 дата публикации

LINERS FOR ROTORS AND STATORS

Номер: US20180003175A1
Автор: "Onodera Shunetsu", Ba Samba, Cariveau Peter T., Dubesset Pierre Lauric, Pushkarev Maxim
Принадлежит:

A rotor and/or stator dampening system includes a stator and/or rotor with a liner selected of one or more materials to achieve a desired dampening effect. In one implementation, a progressive cavity motor or pump includes a stator with an internal axial bore therethrough. The stator has a liner along an axial length thereof with an inwardly facing surface defining the internal axial bore therethrough. The liner has a plurality of axial sections with at least two of the plurality of axial sections being constructed of different materials. A compression resistant mechanism, such as a spring or spring-like device, is disposed within at least one of the axial sections of the liner. The progressive cavity motor or pump also includes a rotor that is disposed and is rotatable within the internal axial bore of the stator to form a moving chamber between the rotor and the stator. 1. A progressive cavity motor or pump comprising:a stator with an internal axial bore therethrough, the stator having a liner along an axial length thereof with an inwardly facing surface defining the internal axial bore therethrough, the inwardly facing surface with axial lobes arranged and designed to form a stator helical profile, the liner having a plurality of axial sections, at least two of the plurality of axial sections being constructed of different materials;a rotor with an outer surface having axial lobes arranged and designed to form a rotor helical profile that is a least partially complimentary to the stator helical profile, the rotor being rotationally disposed within the internal axial bore of the stator to form a moving chamber between the rotor and the stator; anda compression resistant mechanism disposed within at least one of the axial sections of the liner.2. The progressive cavity motor or pump of wherein claim 1 ,the compression resistant mechanism is a spring.3. The progressive cavity motor or pump of wherein claim 2 ,an axial gap exists between at least two of the plurality ...

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Номер записи: 43
02-01-2020 дата публикации

Adaptive self-sealing microfluidic gear pump

Номер: US20200003208A1
Автор: Anette E. Hosoi, Irmgard Bischofberger, Qing Zhang, Tianshi Fang, Yongbin Sun, Youzhi Liang
Принадлежит: Massachusetts Institute of Technology

A microfluidic pumping system configured to prevent backflow from an outlet of the system toward an inlet of the system. The microfluidic pumping system comprising a gear housing that has an inlet and an outlet and that houses a drive gear, an idler gear and a drive shaft. The system further includes a front end plate that is coupled to a first surface of the gear housing and a rear end plate that is coupled to a second, different surface of the gear housing. Also coupled to the gear housing is a first and second Halbach magnet arrays that is disposed between the front end plate and the rear end plate. The first and second Halbach magnet arrays include one or more solenoids and the first Halbach magnet array is disposed proximate to the drive gear and the second Halbach magnet array is disposed proximate to the idler gear.

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Номер записи: 44
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: 45
03-01-2019 дата публикации

SELF ADJUSTING PUMP FOR ICE CREAM FREEZER

Номер: US20190003478A1
Автор: Bendixen Ole, Gyldenlöv Steen, Petersen Erik-J-Wolf
Принадлежит:

A self adjusting gear pump () for an ice cream freezer and a control unit () for adaptively controlling the closing pressure (PCLOSE) of a pump for an ice cream freezer. The gear pump system comprises a pump casing (), an inlet () for receiving a liquid food product of ice cream mix, an outlet () for transferring the ice cream mix into a freezing cylinder () of the ice cream freezer (), wherein the pump () is closed by supplying a closing air pressure onto a moveable pump cover () of the pump via at least one hole () provided straight through the pump casing (), thereby moving said moveable pump cover () against the star wheel () and a control unit () for supplying a calculated closing air pressure (PCLOSE) to the pump by means of the air pressure regulator (). 1. A control unit for adaptively controlling closing pressure of an inlet gear pump of an ice cream freezer , the inlet gear pump comprising a pump casing , an inlet for receiving a liquid food product of ice cream mix , and outlet for transferring the ice cream mix into a freezing cylinder of the ice cream freezer , the inlet being connected to an impeller driving a star wheel which in turn is connected to the outlet , wherein the pump is closed by supplying a closing air pressure onto a movable pump cover of the pump via at least one hole provided straight through the pump casing , thereby moving said movable pump cover against the star wheel , wherein the control unit is configured to:receive a first measure of liquid food product supply pressure at the inlet of the pump,receive a second measure of liquid food product outlet pressure at the outlet of the pump,calculate a closing air pressure being determined by the differential pressure between the liquid food product outlet pressure and the liquid food product supply pressure across the pump,supply the calculated closing air pressure to the moveable pump cover by means of an air pressure regulator via the at least one hole in the pump casing, thereby ...

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Номер записи: 46
12-01-2017 дата публикации

METHOD AND KIT FOR GEROTOR REPAIR

Номер: US20170008134A1
Автор: Stuckey George D.
Принадлежит:

An improved repair method and repair kit for gerotor pumps that have become damaged or worn in order to allow the pump to create a sound seal once more. 1. A method for improving gerotor performance comprising:inserting a wear plate within a gerotor assembly;providing a front cover piece which is placed overtop the gerotor; andperforming the above steps without removing a front cover of an engine.2. The method of claim 1 , wherein the wear plate is added to a rear of a gerotor case.3. The method of claim 1 , wherein the wear plate is shaped to conform to a front cover bottom of the engine.4. The method of claim 1 , wherein the wear plate is inserted to engage a lower surface of the gerotor.5. The method of claim 1 , wherein an upper surface of the gerotor engages a lower face of the front cover piece.6. The method of claim 1 , wherein the front cover piece defines openings that correspond to receiving openings in the front cover of the engine.7. The method of claim 1 , wherein the front cover piece has a lower face sized to accommodate a thickness of the wear plate.8. The method of claim 7 , wherein the lower face includes a channel or grove sized to offset the thickness of the wear plate.9. The method of claim 1 , wherein the method is performed without replacing gaskets or adding spacers to the gerotor assembly.10. A method for repairing an existing gerotor assembly in a vehicle comprising:removing a fan shroud, belt, fan clutch, and fan assembly from an engine;removing a harmonic balancer from the engine;removing a gerotor oil pump cover;removing a gerotor;removing a crankshaft seal wear ring;installing a gerotor wear plate;reinstalling the crankshaft seal wear ring;reinstalling the gerotor;installing a front cover piece that accommodates the wear plate;reinstalling the harmonic balance; andreinstalling the fan shroud, belt, fan clutch, and fan assembly.11. The method of wherein the gerotor assembly is repaired without removing an engine front cover.12. The ...

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Номер записи: 47
14-01-2016 дата публикации

Rotary damper for a vehicle

Номер: US20160009158A1
Автор: Daniel Wolf, Detlef Baasch
Принадлежит: ZF FRIEDRICHSHAFEN AG

A rotary damper, for a vehicle, for damping relative movements between vehicle wheels and the vehicle body. The at least one gear assembly has several gearwheels in functional connection by virtue of rotational movement of which hydraulic medium can be displaced for the purpose of hydraulic damping for the vehicle.

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Номер записи: 48
14-01-2016 дата публикации

Internal Gear Pump

Номер: US20160009264A1
Автор: Alaze Norbert, Kurz Edgar, Schepp Rene, Speer Harald
Принадлежит:

The disclosure relates to an internal gear pump as a hydraulic pump for a slip-controlled vehicle brake system. The disclosure proposes to configure the internal gear pump as a pre-assembled module with a cartridge as housing, which can be pressed into a receptacle of a hydraulic block of the vehicle brake system. The cartridge has two steps which are parallel to one another for attaching a press-in ram and for orienting the cartridge in an angularly correct manner by means of the press-in ram, and a sealing surface, with which the cartridge bears in a sealed manner in the receptacle of the hydraulic block when the cartridge is pressed into the receptacle. 1. An internal gear pump for a hydraulic vehicle brake system , comprising:a preassembled module including a cartridge configured as a housing, the cartridge having a shoulder for angularly correct alignment by positive engagement.2. The internal gear pump as claimed in claim 1 , further comprising:a drive wheel positioned on one end of the cartridge, a diameter of the drive wheel being smaller than a diameter of the cartridge, wherein the drive wheel does not overlap the shoulder for angularly correct alignment of the cartridge, when viewed axially.3. The internal gear pump as claimed in claim 1 , the cartridge having two parallel surfaces extending in secant directions as a shoulder for angularly correct alignment by positive engagement.4. The internal gear pump as claimed in claim 3 , the cartridge having two mutually opposite parallel steps which are axially parallel with respect to the cartridge claim 3 , the two mutually opposite parallel steps being the two parallel surfaces of the shoulder for angularly correct alignment of the cartridge by positive engagement claim 3 , the two mutually opposite parallel steps further having radial surfaces situated in a radial plane of the cartridge and configured to press the cartridge into a socket.5. The internal gear pump as claimed in claim 1 , further comprising a ...

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Номер записи: 49
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: 50
12-01-2017 дата публикации

Working Member of a Helical Rotary Machine

Номер: US20170009583A1
Автор: KAZAKIAVICHIUS Sergei M., KUZNETSOV Vladimir M., REMNEVA Tatiana A., SKOVORODIN Aleksandr V., STANOVSKOI Viktor V., ZAKHARKIN Nikolai V.
Принадлежит:

Disclosed are rotary positive displacement machines capable of acting as an engine and as a pump, serving to improve the profile of working members of helical rotary engines, compressors and pumps. An actuator is comprised of a pair of rotors having engaged helical teeth. The rotors are disposed in chambers which encircle both. The working areas of the profiles of the teeth in an engaged pair are delineated in cross-section by portions of a cycloidal curve for one rotor and by arcs of circumferences which are eccentrically offset from the axis of the second rotor. Such a profile of teeth produces an eccentrically cycloidal engagement capable to work efficiently at very high rotor rotation speeds. The presence of power contact and low sensitivity to gearwheel skews allow for working with nonhomogeneous media, including those containing solid inclusions. 1. An actuator of a helical rotary machine , the actuator comprising pair-wise interacting helical rotors disposed in an encircling chamber , wherein a tooth profile of one rotor of the helical rotors in the pair is formed by convex segments of front portions of a cycloidal curve , and wherein working areas of teeth of a second rotor in the pair are formed by arcs of circumferences eccentrically offset from a rotor axis , so that helical teeth in the pair of rotors form an eccentrically cycloidal engagement.235. The actuator of the helical rotary machine of claim 1 , wherein a number of teeth of the pair of rotors is between and . This Application is a Continuation application of International Application PCT/RU2014/000660, filed on Sep. 4, 2014, which in turn claims priority to Russian Patent Applications No. RU 2013141721, filed Sep. 10, 2013, both of which are incorporated herein by reference in their entirety.The invention relates to the field of rotary positive displacement machines capable of acting as an engine and as a pump and relates to improving the profile of the working members of helical rotary engines, ...

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Номер записи: 51
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: 52
14-01-2016 дата публикации

SYSTEM AND METHOD FOR CONTROL AND OPTIMIZATION OF PCP PUMPED WELL OPERATING PARAMETERS

Номер: US20160010641A1
Автор: Mancuso Bernardo Martin, Woolsey Kelly Alexander
Принадлежит:

A method of controlling the production efficiency of a well includes determining one or more parameters of a pump model for a pump of the well, determining an inflow rate of liquid into the well, and adjusting a pumping speed of the pump based on the one or more parameters of the pump model to maintain a outflow rate of liquid from the well at a desired fraction of the inflow rate. 1. A method of controlling the production efficiency of a well , the method comprising:determining one or more parameters of a pump model for a liquid pump of the well by measuring well outflow of liquid from the well at a plurality of different pumping speeds of the liquid pump; andadjusting a nominal operating pumping speed of the pump based on the one or more parameters of the pump model to maintain a well outflow rate of liquid from the well at a desired level.2. The method of claim 1 , wherein the desired level is a predetermined fraction of an inflow rate of fluid into a well bore of the well.3. The method of claim 1 , wherein the one or more parameters of the pump model include one of slippage and cavity fillage.4. The method of claim 3 , wherein the slippage is determined by a method including:measuring a first well outflow rate while running the liquid pump at a first speed; andcalculating the slippage by a comparison of a theoretical pump outflow at the first speed provided by a manufacturer of the liquid pump and the first well outflow rate.5. The method of claim 4 , further comprising increasing the efficiency of the well by adjusting the pumping speed of the liquid pump based on the slippage and a displacement of the pump.6. The method of claim 3 , wherein the cavity fillage is determined by a method including:measuring a first well outflow rate while running the liquid pump at a first speed;measuring a second well outflow rate while running the liquid pump at a second speed; andcalculating the cavity fillage from a comparison between the first well outflow rate and the ...

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Номер записи: 53
14-01-2016 дата публикации

COMPACT STRUCTURE OF GEAR PUMP

Номер: US20160010645A1
Автор: Hakamada Naoki, Hashiba Takashi, Kawabata Tomoaki, Naganuma Takahiro
Принадлежит:

A gear pump apparatus includes a gear pump and a sealing mechanism which includes an annular rubber member, an outer member, and an inner member. One of the outer member and a casing of the gear pump apparatus has a contact member located outside a portion of the outer member which contacts the gear pump in a radial direction of the gear pump. The contact member is placed to create a physical contact between the outer member and the casing to absorb a part of force by which the outer member is pressed against the gear pump. This results in a decrease in pressure acting on an area of contact between the outer member and the gear pump, which leads to a drop in resistance to sliding between the gear pump and the outer member, thus decreasing a loss of torque required for the pumping operation of the gear pump. 1. A gear pump apparatus comprising:a gear pump which includes an outer gear and an inner gear meshing with the outer gear so as to define a plurality of cavities, the outer and inner gears being rotated through a drive shaft to suck and discharge fluid in a pumping operation;a casing which has defined therein a chamber in which the gear pump is disposed;a sealing mechanism which is disposed between an outer wall of the casing and said gear pump, said sealing mechanism working to create a hermetical seal between a low-pressure region and a high-pressure region, the low-pressure region including a suction side of the gear pump into which the fluid is sucked and a peripheral region of the drive shaft, the high-pressure region including a discharge side from which the fluid is discharged, said sealing mechanism including an annular rubber member, an outer member, and an inner member, the annular rubber member surrounding the low-pressure region to create a hermetical seal between the low-pressure region and the high-pressure region, the outer member being placed in contact with one of axially opposed ends of the casing and one of axially opposed ends of the gear ...

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Номер записи: 54
11-01-2018 дата публикации

Stator-Rotor System And Method For Adjusting A Stator In A Stator-Rotor System

Номер: US20180010603A1
Автор: Bindig Christian, Kamal Hisham, Kneidl Christian, Tekneyan Mikael, Voit Stefan
Принадлежит:

A stator-rotor system of an eccentric screw pump including a rotor with a rotor screw and a stator with an internal thread. The stator includes a support element and an elastomer part. The support element surrounds the elastomer part in sections around the whole circumference. The stator-rotor system includes a mechanism for adjusting the stator, having two adjustment elements arranged on the stator-rotor system, which are distance-variable relative to one another. In a first working position the two adjustment elements have a first distance from one another and in a second working position, a second distance. The cross-section and the length of the elastomer part of the stator in the second working position are changed compared to the cross-section and the length of the elastomer part in the first working position. 1. A stator-rotor system of an eccentric screw pump comprising a rotor with a rotor screw and a stator with an internal thread , the stator comprising a support element and an elastomer part , wherein the support element surrounds the elastomer part in sections around the whole circumference , characterised in that the stator-rotor system comprises an adjusting mechanism for adjusting the stator , the adjusting mechanism comprising at least two adjustment elements coupled to the stator-rotor system , wherein the two adjustment elements are distance-variable relative to one another , wherein the two adjustment elements have a first distance from one another in a first working position and wherein the two adjustment elements have a second distance from one another in a second working position , wherein the first distance is not equal to the second distance , wherein in the second working position the cross-section and the length of the elastomer part of the stator are changed compared to the cross-section and the length of the elastomer part in the first working position.2. The stator-rotor system according to claim 1 , wherein a mechanical coupling and/or ...

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Номер записи: 55
11-01-2018 дата публикации

Eccentric Screw Pump And Method For Adapting The Operating State Of An Eccentric Screw Pump

Номер: US20180010604A1
Автор: Bindig Christian, Kamal Hisham, Kneidl Christian, Tekneyan Mikael, Voit Stefan
Принадлежит:

The invention pertains to an eccentric screw pump with a stator-rotor system, which includes a rotor with a rotor screw and a stator with an internal thread. The stator has a support element and an elastomer part, wherein the support element encloses the elastomer part sectionally over its entire circumference. The stator-rotor system has a mechanism for adjusting the stator, which is coupled to at least one sensor for determining actual operating parameters of the stator-rotor system by means of a control unit that activates the adjusting mechanism with consideration of the actual operating parameters determined with the aid of at least one sensor. 1. An eccentric screw pump with a stator-rotor system comprising a rotor with a rotor screw and a stator with an internal thread , wherein the stator comprises a support element and an elastomer part , and wherein the support element encloses the elastomer part at least sectionally over its entire circumference , characterized in that the stator-rotor system features an adjusting mechanism for adjusting the stator which is coupled to at least one sensor for determining actual operating parameters of the stator-rotor system with control unit that can activate the adjusting mechanism with consideration of the actual operating parameters determined with the aid of at least one sensor.2. The eccentric screw pump according to claim 1 , wherein the adjusting mechanism comprises two adjusting elements that are arranged on the stator-rotor system and variable with respect to their distance from one another claim 1 , wherein a mechanical coupling and/or connection exists between the adjusting elements of the adjusting mechanism and the stator such that a change in the cross section and the length of the elastomer part of the stator can be realized by changing the relative distance between the two adjusting elements.3. The eccentric screw pump according to claim 2 , wherein the first adjusting element is arranged stationary on the ...

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Номер записи: 56
11-01-2018 дата публикации

FUEL PUMP

Номер: US20180010606A1
Автор: FURUHASHI Daiji, SAKAI Hiromi
Принадлежит:

An outer gear and an inner gear expand and contract volume of pump chambers formed between both the gears, and rotate to suction fuel into the pump chambers and then discharge fuel from the pump chambers sequentially. The inner gear includes an insertion hole that is depressed along its axial direction. A joint member includes a main body portion that is fitted to a rotary shaft, a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween, and a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding portion. 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 eccentric from the outer gear in an eccentric direction to be engaged with the outer gear;a pump housing that rotatably accommodates the outer gear and the inner gear;an electric motor that includes a rotary shaft which is rotary-driven; anda joint member that connects together the inner gear and the rotary shaft, wherein:the outer gear and the inner gear expand and contract volume of a plurality of pump chambers formed between both the gears, and rotate to suction fuel into the plurality of pump chambers and then discharge fuel from the plurality of pump chambers sequentially;the inner gear includes an insertion hole that is depressed along its axial direction; and a main body portion that is fitted to the rotary shaft;', 'a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween; and', 'a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding ...

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Номер записи: 57
11-01-2018 дата публикации

FUEL PUMP AND MANUFACTURING METHOD THEREOF

Номер: US20180010607A1
Автор: FURUHASHI Daiji, SAKAI Hiromi
Принадлежит:

A suction side end part of a suction guide passage and a discharge side end part of a discharge guide passage are opposed to each other with a gap therebetween. At a deviation angle at which contraction of a pump chamber starts, an outer peripheral part of the discharge side end part is formed along an inner tooth, and an inner peripheral part of the discharge side end part is formed along an outer tooth. A working tool that rotates and cuts circularly is moved around on a pump housing in a single continuous line to form an outline of the discharge guide passage, thereby forming the discharge guide passage. The working tool is moved around on the pump housing in a single continuous line to form an outline of the suction guide passage, thereby forming the suction guide passage. 1. A fuel pump comprising:an outer gear that includes a plurality of inner teeth;an inner gear that includes a plurality of outer teeth and is eccentric from the outer gear in an eccentric direction to be engaged with the outer gear; anda pump housing that rotatably accommodates the outer gear and the inner gear, wherein:the outer gear and the inner gear expand and contract volume of a plurality of pump chambers formed between both the gears, and rotate to sequentially suction fuel into the plurality of pump chambers and discharge fuel from the plurality of pump chambers; a sliding surface on which the outer gear and the inner gear slide;', 'a suction guide passage that suctions fuel into the plurality of pump chambers as a guide passage that is recessed from the sliding surface and extends in a circumferential direction of the pump housing; and', 'a discharge guide passage that discharges fuel from the plurality of pump chambers as the guide passage that is recessed from the sliding surface and extends in the circumferential direction;, 'the pump housing includesa suction side end part of the suction guide passage and a discharge side end part of the discharge guide passage are opposed to ...

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Номер записи: 58
14-01-2021 дата публикации

APPARATUS FOR A COUNTERBALANCE FOR AN ECCENTRIC MOTOR

Номер: US20210010471A1
Автор: HEMPHILL Jeffrey
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A pump, comprising a rotor axially located between a fluid inlet section and a fluid outlet section, wherein the rotor is configured to rotate about a center axis, a stator surrounding the rotor, wherein the stator includes an inner diameter surface and an outer diameter surface, wherein the inner diameter surface includes a groove surrounding the stator and concentric about the center axis, and a ring surrounding the stator, wherein the ring is adjacent to the groove and defines a gap between an outer diameter of the surface and an inner surface of the ring, wherein the ring includes a ring mass and the stator includes a stator mass, and the ring mass is substantially equal to the stator mass. 1. A pump , comprising:a rotor axially between a fluid inlet section of the pump and a fluid outlet section of the pump, wherein the rotor is configured to rotate about a center axis;a stator surrounding the rotor; anda ring surrounding about the stator, wherein the ring has a ring mass and the stator has a stator mass, and the ring mass is substantially equal to the stator mass, wherein the ring is configured to rotate about the stator in response to a magnetic flux introduced into the stator.2. The pump of claim 1 , where in the pump further includes an air gap located between an inner diameter of the ring and an outer diameter of the stator.3. The pump of claim 2 , wherein a diameter of the air gap decreases when the magnetic flux is introduced into the stator.4. The pump of claim 2 , wherein the stator further includes a groove located on an outer diameter of the stator claim 2 , wherein a first surface of the groove faces an inner diameter of the ring.5. The pump of claim 1 , wherein the ring is concentric about the center axis.6. The pump of claim 1 , wherein the ring has a first polarity and the stator has a second polarity claim 1 , and the first and second polarity are opposite polarities.7. The pump of claim 1 , wherein the stator includes a plurality of legs claim ...

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Номер записи: 59
10-01-2019 дата публикации

System to Pump Fluid and Control Thereof

Номер: US20190010964A1
Автор: Afshari Thomas
Принадлежит:

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

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Номер записи: 60
09-01-2020 дата публикации

STATOR ASSEMBLY FOR A PROGRESSIVE CAVITY PUMP OR A PROGRESSIVE CAVITY MOTOR AS WELL AS METHOD FOR MANUFACTURING AND REPAIRING THE SAME

Номер: US20200011325A1
Автор: Jaeger Sebastian
Принадлежит: Arnold Jaeger Holding GmbH

A stator assembly for a progressive cavity pump or a progressive cavity motor includes connectors for connecting functional elements and at least one stator, the stator including an outer pipe as well as a lining subject to wear which is disposed inside the outer pipe, the at least one stator being disposed between the connectors such that a cavity extending across the entire stator assembly for housing a rotor is created. Between at least one of the connectors and at least one stator adjacent thereto and/or between adjacent stators an adhesion region is provided, whereby in the adhesion region an adhesive is disposed in such a way that between the at least one connector and the at least one stator adjacent thereto and/or between said respectively adjacent stators a substance-to-substance connection is created. 1. A stator assembly for a progressive cavity pump or a progressive cavity motor , with connectors for connecting functional elements and at least one stator , said stator comprising an outer pipe as well as a lining disposed inside said outer pipe and being subject to wear , said least one stator being disposed between said connectors so that a cavity extending through the entire stator assembly is formed for housing a rotor ,whereinbetween at least one of said connectors and at least one Stator adjacent thereto and/or between adjacent stators an adhesion region is provided whereby an adhesive is disposed inside said adhesion region in such a way that between said at least one connector and said at least one stator adjacent thereto and/or between said respective adjacent stators a substance-to-substance connection is created.2. The stator assembly according to claim 1 , wherein claim 1 , in addition to the adhesive region claim 1 , a screw thread region is disposed between at least one of said connectors and at least one stator adjacent thereto and/or between the respective adjacent stators for forming a positive locking and force-fit connection.3. The ...

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Номер записи: 61
19-01-2017 дата публикации

Gear pump and image recording apparatus

Номер: US20170015106A1
Автор: Masaaki Ando, Noritaka Mitsuo
Принадлежит: Seiko Epson Corp

To reduce frictional heat generated between a rotation shaft and a bearing portion in a gear pump in which the rotation shaft having a gear mounted thereon is received by the bearing portion and an image recording apparatus having the gear pump. Provided is a gear pump which has a rotation shaft, a bearing portion which receives the rotation shaft, and a gear which is mounted on the rotation shaft and rotates with the rotation shaft, in such a manner that the gear feeds liquid. Furthermore, at least either a concave portion or a convex portion is provided in at least either the rotation shaft or the bearing portion.

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Номер записи: 62
15-01-2015 дата публикации

SINGLE FLIGHT SCREW, A SINGLE FLIGHT HIGH PRESSURE SCREW PUMP AND COMPACTOR CONTAINING SUCH A PUMP

Номер: US20150017048A1
Автор: Blanchard Kenneth, Duperon Terry
Принадлежит:

A single flight screw, a single flight high pressure screw pump and the use of the pump in a compactor for compacting and dewatering debris commonly found in waste water. The bore, screw diameter and the flight spacing are constant and the compression force is mostly axial. The work is done at the very end of the screw. 1. A single flight screw , said screw comprising a shaft having two ends , said shaft having a single flight helical wrapped around said shaft in an inclined plane , essentially from one end of said shaft to the opposite end of said shaft , said single flight helical having a front end with a terminating end wherein said front end of said single flight helical , at said terminating end , is cut such that the vertical height of said flight is 30 to 70 percent of the height of said remainder of said helical flight.2. A single flight claim 1 , high pressure screw pump comprising a screw housing having a front opening and a hack and located within said screw housing claim 1 , a screw as claimed in .3. A single flight claim 2 , high pressure screw pump as claimed in claim 2 , wherein claim 2 , in addition claim 2 ,a. the screw housing is lined with intermittent linear supports;b. said screw housing having mounted thereon, at the front thereof, a spring housing, said spring housing having an open back end and an open front end;{'figref': {'@idref': 'DRAWINGS', 'FIG. 5'}, 'c. contained in said spring housing a resistant spring assembly as shown in .'}4. A single flight claim 2 , high pressure screw pump as claimed in claim 2 , wherein claim 2 , in addition claim 2 ,a. the screw housing is lined with intermittent linear supports;b. said screw housing having mounted thereon, at the front thereof, a spring housing, said spring housing having an open back end and an open front end;{'figref': {'@idref': 'DRAWINGS', 'FIG. 6'}, 'c. contained in said spring housing a resistant spring assembly as shown in .'}5. A single flight claim 2 , high pressure screw pump as ...

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Номер записи: 63
15-01-2015 дата публикации

OIL PUMP

Номер: US20150017049A1
Автор: Naiki Takehiko
Принадлежит: MUKUNI CORPORATION

An oil pump of the present invention includes a housing (), a rotary shaft () which is supported by the housing, an inner rotor () which is rotated in the housing integrally with the rotary shaft, an outer rotor () which is rotated in the housing as being interlocked with the inner rotor, a rotor case () which is fitted into the housing and which contains the inner rotor and the outer rotor and supports an outer circumferential face of the outer rotor in a slidable manner, a side plate () which is arranged to be in contact with at least one annular end face of the rotor case, and an elastic member () which exerts an urging force to press the side plate to the annular end face of the rotor case. According to the above, slide resistance and operational torque can be reduced and side clearance can be maintained at constant. 1. An oil pump , comprising:a housing;a rotary shaft which is supported by the housing;an inner rotor which is rotated in the housing integrally with the rotary shaft;an outer rotor which is rotated in the housing as being interlocked with the inner rotor;a rotor case which is fitted into the housing and which contains the inner rotor and the outer rotor and supports an outer circumferential face of the outer rotor in a slidable manner;a side plate which is arranged to be in contact with at least one annular end face of the rotor case; andan elastic member which exerts an urging force to press the side plate to the annular end face of the rotor case.2. The oil pump according to claim 1 ,wherein the rotor case is made of material having the same thermal expansion coefficient as that of the inner rotor and the outer rotor.3. The oil pump according to claim 2 ,wherein the side plate is made of material having the same thermal expansion coefficient as that of the housing.14. The oil pump according to claim 1 ,wherein “Wc>Wr” is satisfied while We denotes a width dimension of the rotor case in the axis line direction of the rotary shaft and Wr denotes a ...

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Номер записи: 64
03-02-2022 дата публикации

ELECTRIC OIL PUMP

Номер: US20220034315A1
Автор: Hashimoto Yutaka, Higuchi Koji, KUBO Kohei, MAKI Yoshiyuki
Принадлежит:

An electric oil pump includes a motor including a motor shaft, a pump assembly including a vane pump driven by the motor to suction and discharge oil, and an inverter to drive the motor. The motor includes a rotor, a stator on a side outward from the rotor in a radial direction, and a motor housing containing the rotor and the stator. The motor housing includes a suction port through which the vane pump suctions oil from outside, and a discharge port through which the vane pump discharges oil to outside. The motor housing includes flat surface portions in a portion of an outer periphery thereof. The suction port and the discharge port are located in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction. 112-. (canceled)13. An electric oil pump comprising:a motor including a motor shaft extending along a central axis extending in an axial direction;a pump assembly including a vane pump which is on one side of the motor in the axial direction and is driven by the motor via the motor shaft to suction and discharge oil; andan inverter which is on another side of the motor in the axial direction to drive the motor; wherein a rotor which is rotatable together with the motor shaft;', 'a stator which is on a side outward from the rotor in a radial direction; and', 'a motor housing which houses the rotor and the stator;, 'the motor includes a suction port through which the vane pump suctions oil from outside; and', 'a discharge port through which the vane pump discharges oil to outside;, 'the motor housing includesthe motor housing includes flat surface portions in a portion of an outer peripheral shape thereof; andthe suction port and the discharge port are provided in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction.14. The electric oil pump according to claim 13 , ...

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Номер записи: 65
19-01-2017 дата публикации

Mounting structure for electric oil pump

Номер: US20170016442A1
Автор: Shinichiro Hazama, Shinsuke Isogai, Takashi Hashimoto, Toshiyuki Yokoi
Принадлежит: Aisin Seiki Co Ltd

A mounting structure for electric oil pump is provided to allow the electric oil pump to be mounted without through a communication pipe. The electric oil pump includes a pump unit having an inscribed gear pump, and a motor unit disposed adjacent to the pump unit and having a sensorless brushless DC motor for rotating the inscribed gear pump. A transmission accommodates the electric oil pump and includes a transmission case having an oil pan. The electric oil pump is attached to the transmission case with at least a through hole for supplying working oil to the pump unit being submerged in the working oil reserved in the oil pan.

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Номер записи: 66
21-01-2016 дата публикации

Stator for Progressive Cavity Pump/Motor

Номер: US20160017711A1
Автор: Morris Andrew
Принадлежит:

A stator for a progressive cavity pump or motor includes a stator housing having a longitudinal axis. In addition, the stator includes a stator insert of a material moulded within the housing. The stator housing includes an outer tube having an inner surface. The stator housing also includes a plurality of framework elements disposed on the inner surface of the outer tube. Further, the stator housing includes at least one recess in the inner surface of the outer tube. The conjunction of the framework elements and the at least one recess define a plurality of chambers receiving insert material therein whereby the insert material is mechanically fixed axially, radially and torsionally within the outer tube.

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Номер записи: 67
18-01-2018 дата публикации

PROGRESSIVE CAVITY PUMP AND METHOD FOR OPERATING SAME IN BOREHOLES

Номер: US20180017054A1
Автор: Barbour Stephen Gerard
Принадлежит:

A method for operating a progressive cavity pump wherein the stator has at least first and second active stator sections that are at different locations on the stator, comprising inserting a first rotor having a first active rotor section that is aligned with the first active stator section, and rotating the first rotor relative to the first active stator section such that the aligned first active rotor and stator sections generate a pumping force. Subsequently, the first rotor is removed and a second rotor is inserted having a second active rotor section that is aligned with the second active stator section, and rotating the second rotor relative to the second active stator section such that the aligned second active rotor and stator sections generate a pumping force. 18-. (canceled)9. A progressive cavity pump assembly for operation in a borehole , comprising:(a) a unitary stator comprising at least first and second active stator sections at different locations on the stator;(b) a first rotor having a first active rotor section that is configured for alignment with the first active stator section when the first rotor is mounted at a selected location relative to the stator; and(c) a second rotor configured for insertion into the stator independently of the first rotor, and having a second active rotor section that is configured for alignment with the second active stator section when the second rotor is mounted at the selected location relative to the stator, the first and second rotors configured for separate and serial operation within the stator.10. The pump assembly as claimed in further comprising a tubing joint mountable to a bottom end of the stator claim 9 , the tubing joint having a tag bar.11. The pump assembly as claimed in wherein the first rotor comprises a slim rod having a bottom end coupled to the first active rotor section claim 10 , and a top end connectable to a rod string.12. The pump assembly as claimed in wherein the second rotor comprises a ...

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Номер записи: 68
17-01-2019 дата публикации

SCREW PUMP

Номер: US20190017504A1
Автор: HONGO Yusuke, INOUE Masashi, KAMIYA Haruo, OKAJIMA Masahiro, TAKEUCHI Yasuhiro
Принадлежит:

A screw pump includes a male screw, a female screw, a motor, a journal, a bearing member, and a case. The motor includes an output shaft, which transmits a torque to the male screw, and the motor is operable to drive the male screw to rotate the same through the output shaft. The journal is rotatably placed between the output shaft of the motor and the male screw. The bearing member rotatably supports the journal. The case includes a screw receiving hole that receives the male screw and the female screw. The journal and the male screw are coaxially and non-detachably integrated together. The output shaft and the journal are fitted together by clearance fit that enables transmission of the torque between the output shaft and the journal. 1. A screw pump that pumps fluid from a suction inlet at a low pressure side to a discharge outlet at a high pressure side when a driving-side screw , which is one of a male screw or a female screw , and at least one driven-side screw , which is another one of the male screw or the female screw , are rotated while the driving-side screw and the at least one driven-side screw are meshed with each other , the screw pump comprising:the driving-side screw;the at least one driven-side screw;a drive device that includes an output shaft that transmits a torque to the driving-side screw, wherein the drive device is operable to rotate the driving-side screw through the output shaft;a journal portion that is rotatably placed between the output shaft of the drive device and the driving-side screw;a bearing portion that rotatably supports the journal portion; anda case that includes a screw receiving hole, which receives the driving-side screw and the at least one driven-side screw, wherein:the journal portion and the driving-side screw are coaxially and non-detachably integrated together; andthe output shaft and the journal portion are fitted together by clearance fit that enables transmission of the torque between the output shaft and the ...

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Номер записи: 69
19-01-2017 дата публикации

SEALING METHOD FOR INSULATED CONDUCTORS IN ELECTRIC SUBMERSIBLE PUMP POTHEAD CONNECTORS

Номер: US20170018989A1
Автор: Howell Steven Alan, Reeves Brian Paul
Принадлежит:

An electric submersible pumping system includes an electric motor and a motor lead cable. The motor lead cable includes a plurality of leads that each includes a conductor, an insulator and a sealing sleeve around the insulator. The sealing sleeve is constructed of metal in preferred embodiments. The electric submersible pumping system further includes a pothead connector attached to the electric motor and the motor lead cable. The pothead connector includes a sealing mechanism around the metal sleeve of each of the plurality of leads. 1. A motor lead cable configured for connection to a pothead connector , the motor lead cable comprising: a conductor;', 'an insulator; and', 'a sealing sleeve around the insulator; wherein the sealing sleeve is constructed of metal., 'a plurality of leads, wherein each of the plurality of leads comprises2. The motor lead cable of claim 1 , wherein the sealing sleeve is swaged into attachment with the insulator and wherein each of the plurality of leads is connected to a common sealing mechanism.3. The motor lead cable of claim 1 , wherein the sealing device is secured to the insulator with an adhesive.4. An electric submersible pumping system comprising:an electric motor; a conductor;', 'an insulator; and', 'a sealing sleeve around the insulator; wherein the sealing sleeve is constructed of metal; and, 'a motor lead cable, wherein the motor lead cable comprises a plurality of leads and wherein each of the plurality of leads comprisesa pothead connector attached to the electric motor and the motor lead cable, wherein the pothead connector comprises a sealing mechanism around the metal sleeve of each of the plurality of leads.5. The electric submersible pumping system of claim 4 , wherein the sealing sleeve is substantially inflexible.6. The electric submersible pumping system of claim 4 , wherein the sealing mechanism comprises:one or more seal grooves; andan O-ring seal in each of the one or more seal grooves, wherein each of the O- ...

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Номер записи: 70
16-01-2020 дата публикации

Pump apparatus

Номер: US20200018309A1
Автор: Kazuhiro Homma, Koji Higuchi, Yoshiyuki Kobayashi, Yosuke Ito
Принадлежит: Nidec Tosok Corp

A pump apparatus includes a motor that rotates a shaft, and a pump that is driven by the shaft, suctions an oil, and delivers the oil to the motor. The pump apparatus includes a first flow channel to suction an oil into the pump through a suction port provided in a pump cover using a negative pressure in the pump, a second flow channel to deliver an oil to the inside of the motor through a delivery port provided in a pump body using pressurization of the pump, a third flow channel provided between a stator and a rotor, a fourth flow channel provided between the stator and a housing, and a fifth flow channel to discharge an oil inside the motor through a discharge port provided in the housing.

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Номер записи: 71
17-04-2014 дата публикации

Geared positive-displacement pump with self-compensating gear chamber

Номер: US20140105776A1
Автор: Dario Fiorello Gabriele Ellero, Pierpaolo Lucchesi
Принадлежит: Fluid O Tech SRL

A positive-displacement pump ( 10 ) of the type comprising a driving gear ( 12 ) and a driven gear ( 14 ) perfectly coupled together and each mounted on a respective support shaft ( 16, 18 ). The driving gear ( 12 ) is operatively connected to a motor ( 20 ) to set the driven gear ( 14 ) in rotation and generate the pumping action on a fluid. The gears ( 12, 14 ) are contained in a chamber ( 40 ) provided with a closing plate ( 42 ). The support shafts ( 16, 18 ), the central body ( 38 ) of the pump ( 10 ), the chamber ( 40 ) that contains the gears ( 12, 14 ), the closing plate ( 42 ) of such a chamber ( 40 ), an inner magnet ( 36 ) and the base of the rear body ( 28 ) of the pump ( 10 ) are in turn housed inside a casing ( 30 ) of the pump ( 10 ).

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Номер записи: 72
22-01-2015 дата публикации

VOLUMETRIC SCREW COMPRESSOR

Номер: US20150023825A1
Автор: MIETTO Virgilio
Принадлежит:

The present invention concerns a compression device () suited to compress a gas, of the type comprising: a main body () suited to define a compression chamber () provided with an inlet () for the gas; a liquid for compressing the gas, suited to be injected in the compression chamber () to create a mixture comprising the liquid and the gas; compression means () arranged in the compression chamber () and suited to compress the mixture towards an outlet () of the compression chamber (); separation means (), arranged downstream of the outlet (), suited to receive the mixture and to separate the liquid and the gas that are included in the mixture; connection means () suited to connect the outlet () to the separation means (). Said connection means () comprise at least one connection channel made at least partially in said main body (). 11) Gas compression device () , comprising:{'b': 30', '130', '230', '330', '2', '32, 'a main body (; , ; ) suited to define a compression chamber () provided with an inlet () for gas, said main body being a single block;'}{'b': '2', 'a compression liquid for the gas, suited to be injected in the compression chamber () in order to obtain a mixture comprising said compression liquid and the gas;'}{'b': 21', '22', '2', '50', '2, 'compression means (, ) arranged in the compression chamber () and suited to compress the mixture towards an outlet () of the compression chamber ();'}{'b': 7', '50, 'separation means () arranged downstream of the outlet () and suited to receive the mixture and separate said compression liquid from the gas included in the mixture;'}{'b': 51', '50', '7, 'a connection channel () suited to directly connect the outlet () to said separation means ();'}{'b': 51', '30', '130', '230', '330, 'wherein said connection channel () is completely made in said main body (; , ; ).'}2) Device according to claim 1 , wherein:{'b': 7', '30', '130', '230', '330, 'said separation means () are at least partially housed in said main body (; , ...

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Номер записи: 73
28-01-2016 дата публикации

ELECTRIC PUMP UNIT

Номер: US20160025092A1
Автор: Miyagawa Yasukata, Okamoto Noriyuki
Принадлежит: JTEKT CORPORATION

An electric pump unit is provided that ensures capability for lubricating a plain bearing and in which a lubricating oil passage is formed with a simple structure. This pump unit includes: a pump in which a rotor placed in a pump chamber of a pump housing rotates; and an electric motor having a motor shaft coupled to the rotor. The motor shaft is rotatably supported by a cylindrical plain bearing disposed in the pump housing. An oil seal is provided on the opposite side to the pump chamber with the plain bearing between so as to be located between the pump housing and the motor shaft. Oil supply grooves are formed in an inner peripheral surface of the plain bearing so as to extend through the plain bearing in an axial direction. 1. An electric pump unit , comprising:a pump that sucks and discharges oil as a rotor placed in a pump chamber of a pump housing rotates while in sliding contact with wall surfaces at both axial ends of the pump chamber; andan electric motor that has a motor shaft coupled to the rotor and drives the pump; whereinthe motor shaft is rotatably supported by a cylindrical plain bearing disposed in the pump housing,a seal member is provided at a position on an opposite side to the pump chamber with the plain bearing between so as to be located between the pump housing and the motor shaft, andan oil supply groove is formed in an inner peripheral surface of the plain bearing so as to extend through the plain bearing in an axial direction.2. The electric pump unit according to claim 1 , whereina suction port through which the oil is sucked and a discharge port through which the oil is discharged are formed in the wall surfaces at the both axial ends of the pump chamber so as to be in a shape of an elongated hole that is longer in a circumferential direction, anda pair of the oil supply grooves are provided so as to be located on a straight line extending in a radial direction and being perpendicular to a straight line which connects a middle position ...

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Номер записи: 74
25-01-2018 дата публикации

TOLERANCE INDEPENDENT CRESCENT INTERNAL GEAR PUMP

Номер: US20180023560A1
Автор: Alexander Philip Taylor, Duncan Patrick Wilson, Greene Colette Doll
Принадлежит: IMO Industries, Inc.

A crescent internal gear pump includes a front cover, an end cover, a ring gear and a pinion gear disposed within a gear housing in an eccentric, intermeshing relationship. The housing is disposed intermediate the front cover and the end cover. A crescent is disposed radially intermediate the ring gear and the pinion gear. The crescent partially extends into a correspondingly shaped slot in the end cover. The gear housing, the ring gear, and the pinion gear can have substantially the same thickness. A shim can be disposed intermediate the end cover and the gear housing for establishing a desired clearance therebetween. 1. A crescent internal gear pump comprising:a front cover;an end cover having a slot therein;a gear housing disposed between the front cover and the end cover;a ring gear and a pinion gear disposed within the gear housing in an eccentric, intermeshing relationship; anda crescent disposed radially intermediate the ring gear and the pinion gear;wherein a portion of the crescent extends into the slot in the end cover.2. The crescent internal gear pump of claim 1 , wherein the crescent is moveable into and out of the slot.3. The crescent internal gear pump of claim 1 , wherein a front face of the crescent engages with the front cover.4. The crescent internal gear pump of claim 1 , wherein the crescent is press-fit into the slot and forms a fluid tight seal with the end cover.5. The crescent internal gear pump of claim 1 , wherein the slot has a cross-sectional shape that is substantially the same as a cross-sectional shape of the crescent.6. The crescent internal gear pump of claim 1 , further comprising a biasing member disposed with the slot and configured to forcibly hold the crescent in engagement with the front cover.7. The crescent internal gear pump of claim 1 , further comprising a shim disposed intermediate the gear housing and the end cover.8. The crescent internal gear pump of claim 7 , wherein the shim has a thickness selected to establish a ...

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Номер записи: 75
25-01-2018 дата публикации

External Rotor Pump

Номер: US20180023562A1
Автор: GOETTLINGER Markus, GUTZER Ulrich
Принадлежит:

An external rotor pump, in particular a hydraulic external rotor pump, has a first component which is configured as an outer rotor with a sliding surface which is arranged on the outer side thereof, and a second component which is configured as an opposing body and in which the outer rotor is mounted rotatably by way of the sliding surface thereof on an inner guide surface of the opposing body and is in mechanical contact with the inner guide surface. An inner rotor which is mounted such that it can be rotated eccentrically with respect to the outer rotor is provided. One of the rotors can be driven, in order to be set into a rotational movement, and the rotors are coupled to one another such that, when the drivable rotor is driven, the other rotor is likewise set into a rotational movement as a result, in order to convey fluid from a suction region to a pressure region of the external rotor pump. The sliding surface or the guide surface has a surface structure which has a load-bearing region and a non-load-bearing region which is depressed in contrast with the former. The result is that the non-load-bearing region is saved from contact between the guide surface and the sliding surface which is mounted thereon. 1. An external rotor pump , comprising:a first component which is constructed as an external rotor and which has a sliding face which is arranged on an outer side thereof;a second component which is constructed as a counter-rotation member and in which the external rotor is rotatably supported by way of the sliding face thereof on an inner guiding face of the counter-rotation member and is in mechanical contact therewith; andan internal rotor which is rotatably supported eccentrically relative to the external rotor;whereinone of the rotors is drivable in order to be caused to carry out a rotational movement and the rotors are coupled to each other such that, when the drivable rotor is driven, the other rotor is thereby also caused to carry out a rotational ...

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Номер записи: 76
25-01-2018 дата публикации

Pump assembly having integrated controller and motor with internal active cooling

Номер: US20180023565A1
Автор: Liping Wang, Richard Muizelaar
Принадлежит: Stackpole International Engineered Products Ltd

A pump assembly and a method for cooling the same are disclosed. The pump assembly includes a pump, a controller, and a driven electric motor. The pump and the electric motor are on opposing axial sides of the controller. The assembly also has a heat conductive plate positioned between the pump and the controller that conducts heat from the controller. A transfer passage is provided for receiving pressurized fluid output from the pump and to direct the fluid along and in contact with the heat conductive plate to conduct heat therefrom into the pressurized fluid. An outlet passage communicates with the assembly outlet to discharge the pressurized fluid.

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Номер записи: 77
28-01-2021 дата публикации

ADHESIVE DISPENSING SYSTEM WITH CONVERTIBLE NOZZLE ASSEMBLIES

Номер: US20210023584A1
Автор: Saine Joel E.
Принадлежит:

An adhesive dispensing system for applying liquid adhesive to a substrate using different nozzles with the same manifold is disclosed. The adhesive dispensing system includes a manifold having a body, a first clamp configured to engage the body of the manifold, a second clamp configured to engage the body of the manifold, and a nozzle. The first and second clamps secure the nozzle to the body of the manifold. The body of the manifold has a first contact surface that engages the first clamp and a second contact surface that engages the second clamp and the nozzle, where the second contact surface is angularly offset from the first contact surface. 1. A manifold for a liquid adhesive dispensing system , the manifold comprising:a body having a first contact surface that engages a first clamp and a second contact surface that engages a second clamp and a nozzle, wherein said first and second clamps secure said nozzle to said body of said manifold, and said second contact surface is angularly offset from said first contact surface.2. The manifold of claim 1 , wherein said body has a top surface claim 1 , a bottom surface opposite said top surface along a vertical direction claim 1 , a front surface claim 1 , and a back surface opposite said front surface along a longitudinal direction that is perpendicular to the vertical direction claim 1 , wherein said second contact surface is spaced from said bottom surface along the vertical direction.3. The manifold of claim 2 , wherein the body has a third contact surface that extends from said second contact surface to said bottom surface claim 2 , said third contact surface being angularly offset from said second contact surface.4. The manifold of claim 2 , wherein said front surface includes said first contact surface.5. The manifold of claim 1 , wherein said first contact surface defines at least one bore that is configured to receive at least one fastener claim 1 , wherein said at least one fastener secures said first clamp ...

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Номер записи: 78
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: 79
23-01-2020 дата публикации

CAVITATION RESISTANT GEAR DRIVEN FUEL PUMP

Номер: US20200025195A1
Автор: Poteet Steven, Rankin Kevin M., Smith Blair A.
Принадлежит:

A gear pump for a gas turbine engine including a first gear having a plurality of gear teeth supported for rotation on a gear shaft relative to a second gear, wherein the gear teeth are formed from a steel base material and surfaces of the gear teeth are coated with a cavitation resistant coating material, and a journal bearing for carrying a gear shaft load through a fluid film pressure between a surface of the gear shaft and a surface of the journal bearing, wherein at least a portion of the journal bearing is formed from a cavitation resistant base material. 1. A gear pump , comprising:a) a first gear having a plurality of gear teeth supported for rotation on a gear shaft relative to a second gear, wherein the gear teeth are formed from a steel base material and surfaces of the gear teeth are coated with a cavitation resistant coating material; andb) a journal bearing for carrying a gear shaft load by way of a fluid film between a first surface of the gear shaft and a second surface of the journal bearing, wherein at least a portion of the journal bearing is formed from a cavitation resistant base material.2. A gear pump as recited in claim 1 , wherein the cavitation resistant base material from which at least portion of the journal bearing is formed is an aluminum (Al) bronze material.3. A gear pump as recited in claim 1 , wherein the cavitation resistant base material from which at least a portion of the journal bearing is formed is a nickel aluminum (NiAl) bronze material.4. A gear pump as recited in claim 1 , wherein the gear teeth are coated with a vapor-deposited cavitation resistant coating selected from the group consisting of titanium nitride (TiN) claim 1 , titanium aluminum nitride (TiAlN) claim 1 , titanium aluminum silicon nitride (TiAlSiN) claim 1 , titanium aluminum carbonitride (TiAlCN) claim 1 , chromium nitride (CrN) claim 1 , aluminum chromium nitride (AlCrN) claim 1 , and chromium aluminum carbonitride (CrAlCN).5. A gear pump as recited in ...

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Номер записи: 80
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: 81
28-01-2021 дата публикации

Screw Rotor and Fluid Machine Body

Номер: US20210025386A1
Автор: Horiuchi Hiroshi
Принадлежит:

The invention reduces a pressure or thermal effect while reducing the mass of a screw rotor. There is provided a screw rotor having a helical tooth on an outer periphery, the helical tooth extending by a predetermined length in an axial direction, in which a radial cross section of the screw rotor includes a lobe portion having a predetermined thickness in a direction toward an axis and forming the helical tooth, and a hollow portion extending from an axial side inner surface of the lobe portion toward an axial side, and the predetermined thickness of the lobe portion differs between a high load side on the outer periphery of the screw rotor and a low load side on the outer periphery. 1. A screw rotor having a helical tooth on an outer periphery , the helical tooth extending by a predetermined length in an axial direction ,wherein a radial cross section of the screw rotor includes a lobe portion having a predetermined thickness in a direction toward an axis and forming the helical tooth, and a hollow portion extending from an axial side inner surface of the lobe portion toward an axial side, andthe predetermined thickness of the lobe portion differs between a high load side on the outer periphery of the screw rotor and a low load side on the outer periphery.2. The screw rotor according to claim 1 ,wherein the predetermined thickness on the high load side is thicker than the predetermined thickness on the low load side.3. The screw rotor according to claim 2 ,wherein the predetermined thickness is increased from the low load side toward the high load side.4. The screw rotor according to claim 1 ,wherein the hollow portion extends entirely in the direction toward the axis.5. The screw rotor according to claim 1 , further comprising:a solid portion at an axis of the hollow portion, a length of the solid portion being substantially equal to a length of the hollow portion in the axial direction,wherein an outer periphery of the solid portion and a tooth bottom of the ...

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Номер записи: 82
04-02-2016 дата публикации

GEAR PUMP DRIVE GEAR STATIONARY BEARING

Номер: US20160032922A1
Автор: Heitz Steven A., Kovach Brandon T.
Принадлежит:

One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a stationary journal bearing. Also included is a fluid film location annularly between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad location on the stationary journal bearing adjacent the fluid film location. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 31.0° and a maximum trailing edge angular location on the stationary journal bearing of 43.0°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad. 1. A gear pump comprising:a drive gear;a gear shaft passing through the drive gear;a stationary journal bearing;a fluid film location annularly between a surface of the stationary journal bearing and a surface of the gear shaft;a hybrid pad location on the stationary journal bearing adjacent to the fluid film location with a minimum leading edge angular location on the stationary journal bearing of 31.0° and a maximum trailing edge angular location on the stationary journal bearing of 43.0°; anda porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.2. The gear pump of claim 1 , wherein the hybrid pad is axially spaced approximately 0.30 inch (0.76 cm) from a face of the drive gear claim 1 , and wherein the hybrid pad has an axial length of approximately 0.675 inch (1.71 cm).3. The gear pump of claim 1 , wherein the fluid film supports a radial load of up to approximately 532 lbf/in(3668 kPa) at or near the hybrid pad.4. The gear pump of claim 3 , wherein the radial load is at an angular location of approximately 47.4°.5. The gear pump of claim 1 , wherein a maximum diametral clearance between the surface of the stationary journal bearing and the surface of the gear shaft is approximately 0.0039 inch (0.00991 cm).6. ...

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Номер записи: 83
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: 84
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: 85
01-02-2018 дата публикации

GEARED FLUID MACHINE

Номер: US20180030982A1
Автор: BOHR Artur, PIPPES Reinhard
Принадлежит: Eckerle Industrie-Electronik GmbH

A geared fluid machine has a machine housing and first and second intermeshing gearwheels that are rotatably mounted in the machine housing with respect to an axis of rotation and are arranged at least partially contacting by their end faces. At least one axial washer is arranged in the machine housing with axial play and has on a distal side a pressure field surrounded by a circumferential seal. The seal contacts and seals against a first bearing surface of the axial washer, and also contacts and seals against a second bearing surface of the machine housing. The seal is at least partially U-shaped in section and has a first seal limb contacting the first bearing surface, a second seal limb contacting the second bearing surface, and a connecting limb connecting the first and second seal limbs. 1. A geared fluid machine comprising:a machine housing;a first gearwheel and a second gearwheel which meshes with the first gearwheel, the first gearwheel and the second gearwheel each rotatably mounted in the machine housing with respect to an axis of rotation and each arranged at least partially contacting by end faces thereof at least one axial washer arranged in the machine housing with axial play, the same having on its side which faces away from the gearwheels a pressure field surrounded by a circumferential seal which contacts and seals against a first bearing surface of the axial washer on one side thereof, and on the other side contacts and seals against a second bearing surface of the machine housing, wherein the seal is at least partially U-shaped in section, and has a first seal limb lying against the first bearing surface, a second seal limb lying against the second bearing surface, and a connecting limb connecting the first seal limb and the second seal limb.2. The geared fluid machine according to claim 1 , wherein the seal is made of a uniform claim 1 , elastic material claim 1 , and/or is designed with no support ring.3. The geared fluid machine according to ...

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Номер записи: 86
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: 87
17-02-2022 дата публикации

Controllable Screw Spindle Pump

Номер: US20220049697A1
Автор: Pawellek Franz
Принадлежит:

A controllable screw spindle pump for the lubricating oil supply of an internal combustion engine comprises a pump housing (), in which a throttle chamber () and a control chamber () are configured which are in contact with the lubricating oil to be conveyed; wherein the throttle chamber () is arranged between the pump inlet () and the spindle chamber (), and the throttle chamber () comprises a throttle valve (), by way of which a throughflow cross section of a conveying stream can be set; and the control chamber () comprises a hydraulic control valve () with a piston () which responds to a hydraulic control pressure (p p) in the control chamber (), and the control chamber () is oriented parallel to the spindle chamber () in relation to an actuating travel of the piston (); and a valve body () of the throttle valve () is coupled to the piston () of the hydraulic control valve (). 17-. (canceled)8. A controllable screw pump for supplying lubrication oil to a combustion engine , comprising:a pump housing with a spindle chamber as well as a pump inlet and a pump outlet communicating with the spindle chamber;at least two screw spindles rotatably accommodated in the spindle chamber, the screw spindles being driven by the combustion engine; whereininside the pump housing, a throttle chamber and a control chamber are provided, which are in contact with the lubrication oil to be conveyed; whereinthe throttle chamber is situated between the pump inlet and the spindle chamber, and the throttle chamber includes a throttle valve, via which a flow cross-section of a delivery flow is settable;the control chamber includes a hydraulic regulating valve with a piston that responds to a hydraulic control pressure inside the control chamber, and the control chamber is arranged in parallel to the spindle chamber with reference to a displacement of the piston; anda valve body of the throttle valve is coupled with the piston of the hydraulic regulating valve.9. The controllable screw pump ...

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Номер записи: 88
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: 89
31-01-2019 дата публикации

GEARED POSITIVE-DISPLACEMENT MACHINE

Номер: US20190032654A1
Автор: Morselli Mario Antonio
Принадлежит:

A geared positive-displacement machine (), comprising a housing () provided with a suction port and with a discharge port, a pair of gearwheels () that are housed and supported by respective shafts () for the rotation in a space inside the housing () and in fluid communication with the suction port and the discharge port, wherein the gearwheels () mesh with each other and have parallel or coinciding axes and a first wheel () thereof is driving and a second wheel () is driven, a pair of containment bodies () for axially containing the wheels (), said containment bodies () being associated with the housing () and each comprise a first face () that faces the pair of gearwheels () and a second face () that is axially opposite with respect to the first face (), and, for each of the two wheels (), a plurality of rolling bodies () that form a crown and that are freely housed in an annular seat () that is coaxial to the respective shaft () and that is defined at the interface between the first face () of at least one of the two containment bodies () and the surface () of the wheels () that in turn faces it, respectively in the first face () of at least one of the two containment bodies or in the surface () of the gearwheels facing the first face (), wherein the rolling bodies () rest on rolling tracks () respectively integral with the wheels () and with the at least one containment body (). Between the first face () of the at least one containment body () and the surface () of the wheels () facing the first face a distance (D) greater than zero exists. 116.-. (canceled)17. A geared positive-displacement machine , comprising:a housing provided with a suction port and with a discharge port;a pair of gearwheels which are housed and supported by respective shafts for the rotation in a space inside the housing and in fluid communication with the suction port and the discharge port, wherein the gearwheels mesh with each other and are provided with parallel or coinciding axes, and ...

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Номер записи: 90
31-01-2019 дата публикации

Compressor Unit and Method for Operating a Compressor Unit

Номер: US20190032655A1
Автор: Feller Klaus, Loerch Roni, Mikulic Tihomir
Принадлежит:

A compressor unit including a screw compressor having a compressor housing that has a screw rotor chamber arranged in the compressor housing, two screw rotors that are arranged in the screw rotor chamber and are mounted on the compressor housing to be rotatable about a respective screw rotor axis, and at least one control slider, which is arranged in a slider channel of the compressor housing, is adjacent to both screw rotors and is movable in a direction of displacement parallel to the screw rotor axes and takes a form such that it affects the final volume and/or the initial volume, wherein there is provided on the screw compressor a compressor operational control unit that takes a form such that it performs a compressor operating function that assists at least one operation of the compressor unit. 1. A compressor unit , including a screw compressor having a compressor housing that has a screw rotor chamber arranged in the compressor housing , at least one screw rotor that is arranged in the screw rotor chamber , is mounted on the compressor housing to be rotatable about a screw rotor axis and receives gaseous medium having an initial volume that is supplied by way of a low-pressure chamber arranged in the compressor housing and discharges it , compressed to a final volume , in the region of a high-pressure chamber arranged in the compressor housing , and at least one control slider , which is arranged in a slider channel of the compressor housing , is adjacent to the screw rotor and is movable in a direction of displacement parallel to the screw rotor axis and takes a form such that it affects the final volume and/or the initial volume ,there is provided on the screw compressor a compressor operational control unit that takes a form such that it performs a compressor operating function that assists at least one operation of the compressor unit.2. A compressor unit according to claim 1 , wherein the at least one compressor operating function is a parameter ...

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Номер записи: 91
31-01-2019 дата публикации

ELECTRIC OIL PUMP

Номер: US20190032656A1
Автор: Hashimoto Yutaka, Higuchi Koji, KATAOKA Shigehiro, KOBAYASHI Yoshiyuki
Принадлежит: NIDEC TOSOK CORPORATION

An electric oil pump includes a motor unit having a shaft and a pump unit which is disposed on a front side of the motor unit, is driven by the shaft, and discharges oil. The motor unit includes a rotor, a stator, and a resin housing in which the rotor and the stator are housed. The pump unit includes a pump rotor provided at the shaft and a pump housing having a housing part in which the pump rotor is housed. The pump housing includes the pump body that is supported by the shaft via a sliding bearing and a pump cover that covers a front side of the pump body. A rear side of the shaft is supported by the resin housing via a rolling bearing and a front side of the shaft that protrudes from the motor unit is supported by a pump body via the sliding bearing. 1. An electric oil pump comprising:a motor unit having a shaft centered on a central axis that extends in an axial direction of the shaft; anda pump unit which is disposed on one side of the motor unit in the axial direction, is driven by the motor unit via the shaft, and discharges oil, a rotor that is fixed to an other side of the shaft in the axial direction;', 'a stator that is disposed outside the rotor in a radial direction; and', 'a resin housing in which the rotor and the stator are housed,, 'wherein the motor unit comprises'} a pump rotor installed to the shaft that protrudes from the motor unit to the one side in the axial direction; and', 'a pump housing having a housing part in which the pump rotor is housed,', a pump body that is supported by the shaft via a sliding bearing; and', 'a pump cover that covers one side of the pump body in the axial direction,, 'wherein the pump housing comprises'}], 'wherein the pump unit comprises'}wherein the other side of the shaft in the axial direction is supported by the resin housing via a rolling bearing, andwherein one side of the shaft that protrudes from the motor unit in the axial direction is supported by the pump body via the sliding bearing.2. The electric ...

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Номер записи: 92
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: 93
05-02-2015 дата публикации

PUMP ARRANGEMENT

Номер: US20150037181A1
Автор: Hoppach Elmar
Принадлежит:

Pump arrangement () for conveying a fluid, with a housing (), with a first rotatably mounted pump member (), and with a second rotatably mounted pump member (), wherein a fluid-conveying effect is produced by means of a relative rotary movement between the first and the second pump member (), wherein the first pump member () can be driven by an electric motor () which is arranged concentrically to the first pump member () and which has a stator () and a rotor (), wherein the rotor () is fixed to the first pump member () and wherein the pump arrangement () is constructed in such a way that fluid is present in an annular gap () between the rotor () and the stator (). In this case, the pump arrangement has temperature control means for heating the fluid in the annular gap (). 1. A pump arrangement for delivering a fluid ,comprising a housing, a first rotatably mounted pump member, anda second rotatably mounted pump member, wherein a fluid delivering effect is produced by means of a relative rotary movement between the first and the second pump member, wherein the first pump member can be driven by an electric motor which is arranged concentrically with the first pump member and which has a stator and a rotor, wherein the rotor is fixed on the first pump member, wherein the pump arrangement is constructed in such a way that fluid is present in an annular gap between the rotor and the stator, and wherein the pump arrangement includes temperature control means for heating the fluid in the annular gap.2. The pump arrangement as claimed in claim 1 , wherein the temperature control means comprises the feature that the rotor has a lower thermal conductivity than the first pump member.3. The pump arrangement as claimed in claim 1 , wherein the stator has at least one stator pole on which an electric stator winding is arranged claim 1 , and wherein the temperature control means comprises the feature that the stator pole directly adjoins the annular gap.4. The pump arrangement ...

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Номер записи: 94
01-05-2014 дата публикации

INTERNAL GEAR PUMP

Номер: US20140119973A1
Автор: Alaze Norbert, Schepp Rene
Принадлежит: ROBERT BOSCH GMBH

An internal gear pump is a return feed pump for a hydraulic vehicle braking system. The internal gear pump includes a filling part formed by two flexible sheet metal parts connected by an axial sealing element that is vulcanized in place and, in side view, is U-shaped. The axial sealing element is configured to improve the efficiency of the internal gear pump and allows large production tolerances. 1. An internal gear pump , comprising:an internally toothed annulus;an externally toothed pinion arranged eccentrically in the annulus and configured to mesh with the annulus in one section of a circumference;a crescent-shaped free space between the pinion and the annulus opposite said one section of the circumference in which the pinion meshes with the annulus; anda filler piece arranged in the free space, and having an inner part and an outer part,wherein the inner part has an inner side on which tooth tips of teeth of the pinion rest,wherein the outer part has an outer side on which tooth tips of teeth of the annulus rest, andwherein an axial sealing element is arranged between the inner part and the outer part.2. The internal gear pump as claimed in claim 1 , wherein one of the inner part and the outer part of the filler piece is a bent sheet metal part.3. The internal gear pump as claimed in claim 1 , wherein the axial sealing element is configured to press the inner part of the filler piece elastically inward against the tooth tips of the teeth of the pinion and is configured to press the outer part of the filler piece elastically outward against the tooth tips of the teeth of the annulus.4. The internal gear pump as claimed in claim 1 , wherein the axial sealing element has a cavity configured to communicate with a pressure side of the internal gear pump.5. The internal gear pump as claimed in claim 4 , wherein:the axial sealing element is U-shaped and is closed at an end facing a suction side of the filler piece, andthe axial sealing element includes a first leg ...

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Номер записи: 95
31-01-2019 дата публикации

SWITCHED RELUCTANCE MOTOR AND APPLICATION THEREOF

Номер: US20190036431A1
Автор: Zhang Chun
Принадлежит:

The present invention belongs to the field of motors, and specifically relates to a switched reluctance motor of a novel structure. The switched reluctance motor includes stator tooth poles and rotor tooth poles, the rotor tooth poles are in rotation fit relative to the stator tooth poles, wherein the number of the stator tooth poles is twice as large as that of the rotor tooth poles; the stator tooth poles are fixedly connected in layers along the direction of a rotation axis, the stator tooth pole with thickness corresponding to the thickness range of the rotor tooth pole is called a rotor tooth pole unit, the stator tooth pole is composed of a stator tooth pole iron core and a stator tooth pole coil sleeved at the outside of the stator tooth pole iron core, an end part of the stator tooth pole iron core forming an air gap with the rotor tooth pole is a concave-convex fit circular arc surface, the cooperation relationship between the stator tooth pole and the rotor tooth pole is that no matter the rotor tooth pole rotates to any angle relative to the stator tooth pole, the center line of at least one layer of stator tooth poles forms an included angle α with the center line of the corresponding rotor tooth pole unit, 0<α≤β, β is an angle of a center of the circle corresponding to the circular arc of a cross section of the stator tooth pole iron core or the rotor tooth pole along the direction of the rotation axis. 1. A switched reluctance motor , comprising stator tooth poles and rotor tooth poles , the rotor tooth poles are in rotation fit relative to the stator tooth poles , wherein the tooth number of the stator tooth pole is 2 m , and the tooth number of the rotor tooth pole is m; the stator tooth poles are fixedly connected in layers along the direction of a rotation axis , the stator tooth pole with thickness corresponding to the thickness range of the rotor tooth pole is called a rotor tooth pole unit , the stator tooth pole is composed of a stator tooth ...

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Номер записи: 96
09-02-2017 дата публикации

TWO-LIQUID-TYPE, DOUBLE-ROW STRUCTURED TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUIDS UNDER HIGH PRESSURE

Номер: US20170037849A1
Автор: EOM Boon Do, KIM Hee Kyun
Принадлежит:

Disclosed is a two-liquid-type, double-row structured trochoid pump for transferring high-viscosity liquids under high pressure. A front body, a first housing, a center body, a second housing, and a rear body are successively coupled to form an outer body, and a first idler is coupled to an inside of the first housing. A first rotor is inserted into the first idler, a second idler is coupled to an inside of the second housing, and a second rotor is inserted into the second idler. A shaft is coupled to penetrate the front body, the first housing, the center body, the second housing, the rear body, and the first and second rotors, and the shaft is connected to an external electric motor. Accordingly, transfer equipment can be reduced in size and weight through reduction of an attachment and a controller, which constitute the transfer equipment, into one device. 1. A trochoid pump comprising:a front body having a first discharge port formed on an outer surface thereof, a first discharge flow path formed on an inside thereof to communicate with the first discharge port, a first through-hole formed in the center thereof, and a plurality of fastening holes formed on a circumference of the first through-hole;a first housing coupled to the front body and having both open ends and a path formed in the center thereof;a first idler rotatably inserted into the path of the first housing and having a gear groove formed on an inside thereof;a first rotor inserted into the gear groove of the first idler with a diameter that is smaller than the gear groove, and having a plurality of gears formed on an outer periphery thereof;a center body coupled to the first housing through one side thereof and having a second through-hole formed in the center thereof to coincide with the first through-hole;a second housing coupled to the other side of the center body and having both open ends and a path formed in the center thereof;a second idler rotatably inserted into the path of the second ...

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Номер записи: 97
11-02-2016 дата публикации

Method of determining pump flow in twin screw positive displacement pumps

Номер: US20160041026A1
Автор: STAVALE Anthony E.
Принадлежит:

Techniques are provided for tuning a twin screw positive displacement pump having a signal processor with a signal processor to receive signaling containing information about actual pump performance data for actual rated conditions captured during a tuning function related to the operation of a twin screw positive displacement pump; and determine corrected pump performance data to operate the rotary positive displacement pump by compensating pump performance data being used for operating the twin screw positive displacement pump based at least partly on the actual pump performance data for the actual rated conditions captured during the tuning function. The corrected pump performance data includes corrected published pump performance data having a corrected published rated power and slip factor, and the actual pump performance data contains information about actual power, specific gravity and viscosity related to the operation of the twin screw positive displacement pump and received from a pump controller or controlling device, including a variable frequency drive. 1. Apparatus comprising:a signal processor configured toreceive signaling containing information about actual pump performance data for actual rated conditions captured during a tuning function related to the operation of a twin screw positive displacement pump; anddetermine corrected pump performance data to operate the twin screw positive displacement pump by compensating pump performance data being used for operating the twin screw positive displacement pump based at least partly on the actual pump performance data for the actual rated conditions captured during the tuning function.2. Apparatus according to claim 1 , wherein the corrected pump performance data include corrected published pump performance data having a corrected published rated power a rated slip factor compensated for the actual rated conditions.3. Apparatus according to claim 1 , wherein the actual pump performance data includes ...

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Номер записи: 98
18-02-2016 дата публикации

Internal Gear Pump

Номер: US20160046271A1
Автор: Alaze Norbert, Kurz Edgar, Schepp Rene, Speer Harald
Принадлежит:

An internal gear pump, in particular a hydraulic pump for a slip-controlled vehicle braking system, is configured to be pre-assembled. The internal gear pump includes a cartridge configured as a casing, which is configured to be inserted in a receptacle in a hydraulic block of a vehicle braking system. 1. An internal gear pump for a hydraulic vehicle brake system , comprising:a cartridge which is configured to act as a housing of the internal gear pump, and which is configured to be inserted into a receptacle for the internal gear pump;wherein the internal gear pump defines a premountable subassembly.2. The internal gear pump as claimed in claim 1 , further comprising:a pinion;a ring wheel; andan axial disk that is configured to laterally seal off a pump space defined by the internal gear pump, and that includes:an inside portion which bears against end faces of the pinion and of the ring wheel; andan outside portion facing away from the internal gear pump, which is exposed on the cartridge and which has a pressure field that enables a pressure connection of the internal gear pump.3. The internal gear pump as claimed in claim 1 , wherein:the cartridge further defines an orifice; andthe internal gear pump further defines a suction space that is open on one side and that is in communication with the orifice of the cartridge.4. The internal gear pump as claimed in claim 1 , wherein the receptacle for the internal gear pump is located in a surround housing.5. The internal gear pump as claimed in claim 4 , wherein the surround housing has a second receptacle for a second internal gear pump.6. The internal gear pump as claimed in claim 5 , wherein the internal gear pump has a common drive with the second internal gear pump. The invention relates to an internal gear pump for a hydraulic vehicle brake system, having the features of the preamble of claim . Such internal gear pumps are employed, instead of conventionally used piston pumps, in traction-controlled and/or power- ...

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Номер записи: 99
18-02-2021 дата публикации

High pressure pumping system

Номер: US20210048023A1
Автор: Andrew Anderson, Cameron Neff, Josh Gerbig, Justin Pierce, Michael R. Crawford, Scott Meyer
Принадлежит: Viking Pump Inc

A pump technology that provides for more effective and efficient transfer of liquids, such as petroleum products and components, to and through pipelines. Such a technology can comprise a type of external gear pump that creates higher flow, resulting in higher pressures in the pipeline, to move the liquids, while providing for longer pump life, simpler and less maintenance, and fewer undesired conditions, with a smaller footprint, in a cost-effective system. Further, one or more portions of the pump can be configured to be easily replaceable to provide for maintenance in place, and provide for longer pump life. Additionally, one or more portions of the pump can be constructed with or coated with abrasive resistant material that extends the life of the external gear pump. Such material can also reduce the friction between surfaces and improve the life of the external gear pump under poor feeding conditions.

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Номер записи: 100