Correlated Pump And Motor Or Clutch Control Patents (Class 417/316)
  • Patent number: 11913448
    Abstract: A high-power turbine fracturing system may include a lubrication system, which may include a first lubrication unit configured to lubricate a plunger pump. The first lubrication unit may further include a high-pressure lubrication unit. The high-pressure lubrication unit may include a high-pressure motor, a high-pressure pump, and a high-pressure oil line. The high-pressure motor may be configured to drive the high-pressure pump, which may be configured to pump high-pressure lubricating oil into the high-pressure oil line. The high-pressure oil line may be configured to lubricate at least one of connecting rod bearing bushes or crosshead bearing bushes in the plunger pump.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: February 27, 2024
    Assignee: American Jereh International Corporation
    Inventors: Xiaolei Ji, Rikui Zhang, Peng Zhang, Chunqiang Lan, Zhuqing Mao, Jianwei Wang, Mingchao Mao
  • Patent number: 11858401
    Abstract: A system for electrically powering a semi-trailer dump system includes a DC-to-DC voltage converter configured to receive input DC voltage from a battery bank and output increased DC voltage, an energy storage element configured to receive the increased DC voltage from the DC-to-DC voltage converter, a controller configured to receive DC power from the energy storage element and convert the DC power into AC power, and a motor configured to receive AC power from the controller, the motor being mechanically connectable to a pump for controlling the dumping system.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: January 2, 2024
    Inventor: Rustee Stubbs
  • Patent number: 11549606
    Abstract: In a thermal fluid system, a control valve includes a flow valve and a solenoid pilot valve. The flow valve has an inlet and an outlet; a control chamber for receiving a pilot pressure; and a valve member operable by the pilot pressure to selectively open and close a fluid path from the inlet to the outlet. The pilot pressure acts in a closing direction of the flow valve. The pilot valve provides the pilot pressure to the control chamber and is a 3/2 way valve with a first port in fluid communication with the control chamber, a second port to be connected to a pressure source, and a third port. The pilot valve has a first position connecting the first port with the second port and a second position connecting the first port with the third port.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: January 10, 2023
    Assignee: MAHLE International GmbH
    Inventors: Sourav Chowdhury, Daniel Rupp, Mark J. Zima, Brian Cripps, Kevin Curtin
  • Patent number: 10330187
    Abstract: A hydraulic control unit that delivers hydraulic fluid to a limited slip differential includes a hydraulic control unit housing, a sump and a motor. The hydraulic control unit housing has an accumulator housing portion that houses a biasing assembly and a piston. The sump is defined in the hydraulic control unit housing and at least partially occupies a common space with the accumulator housing portion. The motor is configured to pump fluid into an accumulator chamber of the accumulator housing portion. The fluid pumped into the accumulator housing portion at least partially collapses the biasing assembly and introduces a pre-charge into the hydraulic control unit. The biasing assembly is configured to expand and urge the piston in a first direction resulting in fluid being communicated from the hydraulic control unit and into the limited slip differential.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: June 25, 2019
    Assignee: Eaton Corporation
    Inventors: Daniel P. Fisher, Andrew N. Edler, Scott M. Besemer, Jeffrey A. Oesch, Matthew G. Fox
  • Publication number: 20150023813
    Abstract: A gas compressor includes a housing configured to house a compressor main body including a rotation shaft, and an electromagnetic clutch including an electromagnetic coil formed annularly around the rotation shaft, wherein a seating surface is formed on the housing and abuts against one end surface of the electromagnetic coil, and at least a portion of the seating surface is formed to extend to an outside of a center radius of the electromagnetic coil in a radial direction.
    Type: Application
    Filed: July 16, 2014
    Publication date: January 22, 2015
    Inventors: Yasufumi ISHIBASHI, Masayoshi TAJIRI, Keita SATOU
  • Publication number: 20140377079
    Abstract: An electromagnetic device for overspeed control of a propeller driven by an engine shaft comprises a clutch, an eddy-current coupler, and an electromagnetic brake. The clutch is disposed to mechanically decouple the propeller from the engine shaft. The eddy current coupler is disposed to electromagnetically couple the propeller to the engine shaft when the clutch mechanically decouples the propeller from the engine shaft. The electronic brake is disposed to artificially load the engine shaft when the propeller load on the engine shaft is reduced by mechanically decoupling the propeller from the engine shaft.
    Type: Application
    Filed: June 21, 2013
    Publication date: December 25, 2014
    Inventors: Jacek F. Gieras, Lubomir A. Ribarov
  • Publication number: 20140328696
    Abstract: A utility pump including a pump body defining an inlet and an outlet, a pump motor positioned within the pump body and arranged to move fluid from the inlet to the outlet, a control circuit arranged to operate the pump automatically, and a remote switch arranged to selectively operate the utility pump in one of an automatic mode and an on mode. When the remote switch is arranged in the on mode the control circuit is bypassed.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 6, 2014
    Inventor: Michael B. Bishop
  • Publication number: 20140322041
    Abstract: A friction clutch assembly, preferably for a hybrid cooling pump. The friction clutch assembly includes a friction lining carrier member, a friction lining member, a compression spring member, a clutch carrier member and a flux plate member. A solenoid can be utilized to control the compression of the spring member. The friction clutch assembly has a preferred use in a hybrid coolant pump with two modes of operation, an electric motor operation, and a mechanical pulley-driven operation. The friction clutch assembly can be positioned inside a motor housing. The softening compression spring can minimize parasitic clutch power consumption.
    Type: Application
    Filed: April 10, 2012
    Publication date: October 30, 2014
    Applicant: BORGWARNER INC.
    Inventor: Joshua L. Roby
  • Patent number: 8814497
    Abstract: The invention relates to a switchable coolant pump for combustion engines which is driven by a pulley, wherein the impeller can be driven switchably by the pulley by way of a friction pairing. The switchable coolant pump according to the invention, comprising a connecting flange (9) for a pressure booster (10), the flange being disposed on the pump housing (1), and a working piston (14) disposed in a working cylinder (15), is characterized, among other things, in that on/in the pump housing (1) both the pulley (3) in a pulley bearing (2) and the pump shaft (5) in a pump bearing (4) are mounted separately, and a sleeve receptacle (17) is disposed in the pump housing (1), wherein an annular channel (19) is located in the annular bottom (18) of the receptacle, and an annular piston working sleeve (21) is inserted in the sleeve receptacle (17) in the pump housing (1), and an annular piston (24) that is provided with an annular piston packing (23) is disposed displaceably in the annular piston working sleeve (21).
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: August 26, 2014
    Assignee: Geraete- und Pumpenbau GmbH Dr. Eugen Schmidt
    Inventors: Franz Pawellek, Andreas Schmidt
  • Patent number: 8801394
    Abstract: 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.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 12, 2014
    Assignee: Solar Turbines Inc.
    Inventor: Kevin D. Anderson
  • Patent number: 8740582
    Abstract: For refrigeration units, maintenance machines are required that can receive and compress the refrigerant from the refrigeration unit. Furthermore, a vacuum pump is required, which is connected to the emptied lines and pumps out humidity and air. The maintenance machine according to the invention includes a motor that drives a compressor via a freewheel in one rotational direction. The same motor drives a vacuum pump via a second freewheel in the other rotational direction. The maintenance machine, which can perform two different functions, includes only one single motor. The machine is lightweight, so that it can be carried by the maintenance personnel. Furthermore, it is small and can be produced in a cost-effective manner.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 3, 2014
    Assignee: Inficon GmbH
    Inventor: Gerd H. Rabe
  • Patent number: 8690549
    Abstract: The invention relates to a centrifugal pump assembly with an electric drive motor and with a control device having a frequency converter, for the control of the rotational speed of the drive motor, wherein the control device is designed in a manner such that in at least one control region, a field weakening is produced in the drive motor, by way of which the rotational speed of the drive motor is increased.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: April 8, 2014
    Assignee: Grundfos Management a/s
    Inventors: Jan Caroe Aarestrup, Keld Folsach Rasmussen
  • Publication number: 20140044563
    Abstract: A diaphragm pump comprising a housing for receiving and securely holding a motor, the housing comprising an elongate portion having a closed end and an open end, the elongate portion being adapted to securely receive and house a motor; and a collar portion being provided at the open end of the elongate portion; a cover for the housing, the cover being adapted to engage with the housing; a diaphragm plate extending across the open end of the housing between the collar portion of the housing and the cover and being secured therebetween when the cover is engaged with the collar portion of the housing. The diaphragm pump also includes a wobble plate positioned within the collar portion of the housing.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 13, 2014
    Applicant: Munster Simms Engineering Limited
    Inventors: James Wylie, David Arnaud
  • Patent number: 8512007
    Abstract: A compressor system and method of operating same are provided for the compressed air supply of a commercial vehicle, wherein the compressor system includes a compressor for compressed air generation, a transmission for transmitting torque from a drive motor to the compressor, a clutch for disconnecting the connection between compressor and drive motor, and a control unit for opening and closing the clutch. The control unit is capable of opening the clutch in the event a settable maximum allowed compressor speed or motor speed of the drive motor is exceeded and to close the open clutch temporarily when the motor speed is greater than the maximum allowed motor speed.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: August 20, 2013
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Gilles Hebrard
  • Patent number: 8459958
    Abstract: The present embodiments provide a system having a motor, a compressor having a compression device configured to increase a pressure of a gas, a clutch configured to selectively transfer torque from the motor to the compressor to drive the compression device, and a controller configured to disengage the clutch if the pressure of the gas in the compressor meets or exceeds a first threshold pressure.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: June 11, 2013
    Assignee: Illinois Tool Works, Inc.
    Inventor: Ross Renner
  • Patent number: 8408881
    Abstract: A rotary vacuum pump comprises, between the rotor (2) and a driving motor, a control unit (1; 101) for operatively connecting the pump and the motor only in the periods in which the pump operation is required or desired.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: April 2, 2013
    Assignee: VHIT S.p.A.
    Inventors: Antonio Crotti, Franco Fermini
  • Patent number: 8376719
    Abstract: An improved fire pump for a firefighting vehicle is provided. The fire pump is capable of being positioned at least partially under a rear portion of the cab of a firefighting vehicle. The pump includes a shaft, an impeller supported by the shaft, and a pump housing which encloses the impeller and supports the shaft for rotation about an axis. The housing includes a fluid inlet configured to direct a fluid into the housing along a path generally parallel to the axis. The housing also includes two fluid outlets each at a periphery of the impeller and configured to direct the fluid from the housing along respective paths generally perpendicular to the axis.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: February 19, 2013
    Assignee: Pierce Manufacturing Company
    Inventors: Clarence Grady, Michael R. Moore, Chad Trinkner, Andrew R. Manser, John Schultz
  • Patent number: 8246321
    Abstract: A micropump includes: a tube unit including a tube which has elasticity, and one portion of which is disposed in an arc shape, a plurality of fingers, which are disposed radiating from a direction of a center of the arc shape of the tube, and a guide frame, which holds the tube and the plurality of fingers; and a control unit including a cam, which sequentially presses the plurality of fingers in a direction in which a liquid flows, a drive force transmission mechanism, which transmits a torque to the cam, and a control circuitry, which carries out a control of a motor which drives the drive force transmission mechanism, wherein the tube unit and the control unit are attached stacked one on the other, and are detachable.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: August 21, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Hajime Miyazaki, Mamoru Miyasaka, Kazuo Kawasumi
  • Patent number: 8152452
    Abstract: A conditioning unit can allow the blower to be easily translated from a first operable position in the conditioning unit to a second operable position external to the conditioning unit. The translation of the blower does not require the disconnection of the blower and, accordingly, does not require that the blower be disconnected and reconnected to the control system. Such capability can facilitate the installation of the conditioning unit into a variety of applications and allows the purchaser to customize the blower location based on the desired performance. The ability to customize the installation of the conditioning unit without requiring disconnection and reconnection of the blower can reduce the cost and expense associated with the installation into differing applications.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: April 10, 2012
    Assignee: Liebert Corporation
    Inventors: Daniel J. Schutte, Gary A. Helmink, David W. Douglas, Benedict J. Dolcich, Anfu Zhong, Gang Xu, Lewis Marton, Luis A. Anjos, Peter M. Buckingham
  • Patent number: 8066492
    Abstract: A drive device (2) for the oil pump (6) of a motor vehicle automatic transmission, in which the oil pump (6) on the one hand can be coupled to the drive motor by way of an overrunning clutch (34) and on the other hand is drivingly connected to an auxiliary electric motor (22), which is powered by the on-board power supply of the motor vehicle. The electric motor (22) is arranged outside of the pump housing (8) and is drivingly connected to a driven pump impeller wheel (ring gear 10) that is arranged in the pump housing via a non-rotatable connection.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: November 29, 2011
    Assignee: ZF Friedrichshafen AG
    Inventor: Horst Rögner
  • Publication number: 20110236231
    Abstract: A water pump for a vehicle includes a power transmission member driven and rotated by an external power, a driven shaft driven to be rotatable independently from the power transmission member, an impeller, an arm member which includes a pressing portion pressing the power transmission member and which is contactable to the power transmission member for transmitting a rotation of the power transmission member to the driven shaft, a control member controlling the arm member so that the arm member and the power transmission member come in contact with each other or come out of contact from each other and so that a contact state between the arm member and the power transmission member is variable, and a biasing member biasing the arm member toward the power transmission member.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 29, 2011
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Atsutoshi IKEGAWA
  • Publication number: 20110236230
    Abstract: A water pump for a vehicle includes a power transmitting member, a driven shaft rotated independently from the power transmitting member, an impeller, a biasing member for pressing an inner circumferential surface of the power transmitting member and for rotating in order to transmit a rotation of the power transmitting member to the driven shaft when the biasing member contacts the inner circumferential surface, and a control member for allowing the power transmitting member and the biasing member to come in contact with each other or to come out of contact from each other and for controlling a contacting state between the power transmitting member and the biasing member.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 29, 2011
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Atsutoshi Ikegawa, Masanobu Matsusaka
  • Publication number: 20110052425
    Abstract: A clutch water pump may include a pulley, a brake pad attached on an interior surface of the clutch compartment of the pulley, a clutch disk disposed corresponding to the brake pad in the clutch compartment, a hub rotatably mounted into the penetrating hole and coupled to the clutch disk through a plurality of spring pins, the plurality of spring pins connecting slidably the clutch disk to the hub, a magnetic actuator fixed to the hub and disposed to the clutch disk to selectively move the clutch disk toward or away from the brake pad, and a main shaft, one end of which is fixed to the center of the hub and the other end of which is fixed to an impeller. Furthermore, a method of controlling the clutch water pump according to the engine rotation speed, the coolant temperature, and a condition of the coolant temperature sensor is provided.
    Type: Application
    Filed: November 11, 2009
    Publication date: March 3, 2011
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Seogjin YOON, Jong Ho Lee, Yoonghwa Park
  • Patent number: 7861545
    Abstract: A cut-out circuit for an air conditioner protects the air conditioning system components when subjected to low pressure conditions, without manually resetting the system after low pressure cut-out. The cut-out circuit preferably includes a relay, connectable to a voltage source through a normally closed low pressure switch to a compressor clutch, the relay operable in a closed state to output a voltage from the voltage source through the low pressure switch to the clutch, and in an open state to interrupt the voltage. The low pressure switch may open responsive to a low pressure condition interrupting voltage flow to the clutch. The circuit includes a normally open high pressure switch, connected to the relay and a voltage source, operable to close responsive to a high pressure condition, to output a voltage from a voltage source to the relay for changing the relay operating state to open.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: January 4, 2011
    Assignee: CNH America LLC
    Inventors: Alan G. Leupold, Eric J. Zieser, Joseph E. Borg, Jared A. Heckart
  • Publication number: 20100068071
    Abstract: A mobile work platform includes an operator platform (6), a base (2) and a lift mechanism (4) for lifting the operator platform relative to the base. A hydraulic drive system for the mobile work platform includes an internal combustion engine (14), an electric motor (24) and a hydraulic pump (26). The internal combustion engine (14) and the electric motor (24) are constructed and arranged so as to be capable of driving the hydraulic pump (26) either separately or together.
    Type: Application
    Filed: March 6, 2008
    Publication date: March 18, 2010
    Inventor: Frank Roger Bowden
  • Publication number: 20090208350
    Abstract: A micropump includes: a tube unit including a tube which has elasticity, and one portion of which is disposed in an arc shape, a plurality of fingers, which are disposed radiating from a direction of a center of the arc shape of the tube, and a guide frame, which holds the tube and the plurality of fingers; and a control unit including a cam, which sequentially presses the plurality of fingers in a direction in which a liquid flows, a drive force transmission mechanism, which transmits a torque to the cam, and a control circuitry, which carries out a control of a motor which drives the drive force transmission mechanism, wherein the tube unit and the control unit are attached stacked one on the other, and are detachable.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 20, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hajime MIYAZAKI, Mamoru MIYASAKA, Kazuo KAWASUMI
  • Patent number: 7418887
    Abstract: An accumulator/pump housing associated with a motor vehicle hydraulic system that is designed to incorporate a gerotor pump and an accumulator. The accumulator/pump housing comprises a portion of a torque coupling assembly in which a friction clutch selectively engages and disengages a torque coupling case and at least one output shaft. The accumulator/pump housing is located external to a torque coupling housing and at least partially encloses a gerotor pump and a fluid accumulator. The gerotor pump pressurizes the hydraulic fluid and the fluid accumulator selectively stores the pressurized fluid. The hydraulic pump and accumulator supply pressurized fluid to actuate the friction clutch.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: September 2, 2008
    Assignee: Dana Automotive Systems Group, LLC
    Inventor: Stephen Garlick
  • Patent number: 6960069
    Abstract: An arrangement structure of a swash plate hydraulic pump which can be used in a wide range of construction equipment and industrial vehicles and is small in size, simple in structure, and inexpensive is provided. For this purpose, an arrangement structure of a swash plate hydraulic pump (1) comprises a driving source (3) and a plurality of swash plate hydraulic pumps (4, 8) which are connected to the driving source and discharge pressurized oil, and the plurality of swash plate hydraulic pumps include at least one swash plate hydraulic pump (8) of the second and subsequent swash plate hydraulic pumps which has a driving shaft (9) provided on a plane almost perpendicular to a driving shaft (6) of the first swash plate hydraulic pump (4) coupled to the driving source.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: November 1, 2005
    Assignee: Komatsu Ltd.
    Inventors: Kazuhiro Maruta, Katsuji Ishikawa
  • Publication number: 20040265144
    Abstract: In a hybrid compressor, a compression mechanism includes a rotary shaft, which has a first end and a second end. The first end of the rotary shaft is coupled to a rotating body, which receives power from an external drive source. The second end of the rotary shaft is coupled to an electric motor, which drives the rotary shaft. The rotary shaft is coupled to a rotor of the electric motor via a one-way clutch, which prevents power from being transmitted from the rotary shaft to the rotor. The rotor is supported by a motor shaft, which is separate from the rotary shaft. The second end of the rotary shaft is coupled to an end of the motor shaft using the one-way clutch as a coupling.
    Type: Application
    Filed: April 22, 2004
    Publication date: December 30, 2004
    Inventors: Tetsuhiko Fukanuma, Masahiro Kawaguchi, Yasuharu Odachi, Yoichi Takashima, Hiroyuki Nakaima
  • Publication number: 20040258539
    Abstract: An object of the invention is to minimize energy loss to be generated at a driving shaft and a shaft seal device, when an electric rotating device is driven by an expansion-and-compressor device. According to a feature of the invention, a first driving shaft is rotationally supported by a housing and transmits a driving force from an engine to a second shaft of the expansion-and-compressor device, wherein a shaft seal device is provided on the first driving shaft for air-tightly sealing the inside of the housing from the outside of the housing. A power transmission control device (electromagnetic clutch or one way clutch) is operatively provided in a path between the first driving shaft and the second shaft, so that power transmission from the second shaft to the first driving shaft is cut off, to suppress any energy loss to be generated between the first driving shaft and the shaft seal device.
    Type: Application
    Filed: June 8, 2004
    Publication date: December 23, 2004
    Applicants: DENSO CORPORATION, NIPPON SOKEN
    Inventors: Shigeki Iwanami, Yasushi Suzuki, Keiichi Uno, Kazuhide Uchida, Tadashi Hotta
  • Publication number: 20040253121
    Abstract: A torque receiving member is fixed to a rotary shaft of a compressor. A pulley, which is rotated by an external drive source, is rotatably supported by a housing of the compressor. The pulley is substantially coaxial with the torque receiving member. A rubber damper is located between the pulley and the torque receiving member. The rubber damper absorbs rotational vibration transmitted from the torque receiving member to the pulley. The pulley has a dynamic damper. The dynamic damper includes rollers, which swing like pendulums to reduce rotational vibration of the pulley. Stress produced due to displacement between the axis of the pulley and the torque receiving member is reduced by the rubber damper.
    Type: Application
    Filed: March 24, 2004
    Publication date: December 16, 2004
    Inventors: Masaki Ota, Masahiro Kawaguchi, Taku Adaniya, Akinobu Kanai, Tomoharu Arai, Takeshi Kawata
  • Publication number: 20040247456
    Abstract: A compressor component incorporated into a compressor having a compressor body and a compressor pulley mechanism transmitting a driving force to the compressor body has an austenite grain with a grain size number falling within a range exceeding 10, a fracture stress value of at least 2650 MPa, or a hydrogen content of at most 0.5 ppm. This provides a compressor component and a compressor bearing with a long fatigue life, a high anti-crack strength, and a reduced secular dimensional variation.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 9, 2004
    Inventors: Chikara Ohki, Tomoaki Goto
  • Publication number: 20040247458
    Abstract: The invention relates to a fluid machine, more particularly to a hybrid compressor for a motor vehicle and has an object to reduce vibration and noises thereof.
    Type: Application
    Filed: May 25, 2004
    Publication date: December 9, 2004
    Inventors: Shigeki Iwanami, Kazuhide Uchida
  • Patent number: 6599102
    Abstract: Disclosed are a gas compressor and an air conditioning system in which an anomalous temperature rise in an electro-magnetic clutch is detected at an early stage to stop the operation of the gas compressor. A temperature sensor is mounted at a position in the vicinity of a portion of the electro-magnetic clutch which is subject to anomalous heat generation. When there is a rise in the temperature as detected by the temperature sensor, a driving circuit of the electro-magnetic clutch is interrupted before trouble is caused by an abnormally high temperature.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: July 29, 2003
    Assignee: Seiko Instruments Inc.
    Inventors: Takeshi Nonaka, Chihiro Hirama
  • Patent number: 6454543
    Abstract: The present invention relates to a space-saving and weight-saving motor-and-pump assembly which comprises a drive motor and a pump unit driven by the shaft of the said motor. In order to supply in parallel as many media as possible with an assembly of this type, the present invention suggests the additional integration of at least one second pump unit, driven by the motor shaft of the drive motor, into the motor-and-pump assembly.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: September 24, 2002
    Assignee: Continental Teves AG & Co., OHG
    Inventors: Erhard Beck, Hans-Dieter Reinartz, Helmut Steffes, Peter Drott, Jan Hoffmann
  • Publication number: 20020119055
    Abstract: The piston of a master cylinder in the power train of a motor vehicle is made, at least in part, of a thermosetting plastic material and cooperates with one or more annular seals to ensure that a source of hydraulic fluid is communicatively connected with the chamber in the housing of the master cylinder when the piston is moved by one or more springs or otherwise in a sense to increase the volume of the chamber. When a pedal or another actuator causes the piston to expel pressurized fluid from the master cylinder into a slave cylinder, the seal or seals cooperates or cooperate with the housing and/or with the piston of the master cylinder to seal the source from the chamber of the master cylinder. The slave cylinder can actuate the friction clutch between the prime mover and the transmission in the power train of the motor vehicle.
    Type: Application
    Filed: February 12, 2002
    Publication date: August 29, 2002
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Jean-Francois Heller, Urban Panther, Jan Grabenstatter, Thomas Rammhofer, Roland Welter
  • Patent number: 6409479
    Abstract: A variable displacement piston pump/motor has a simple, compact structure that is suited for use as an oil-pressure generating device for machine presses and the like. In the variable displacement piston pump/motor, a flywheel and a rotation shaft of a pump device are disposed and connected concentrically.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: June 25, 2002
    Assignee: Aida Engineering Co., Ltd.
    Inventors: Takao Ito, Hisanobu Kanamaru
  • Patent number: 5897299
    Abstract: An inlet pipe (7) and a discharge pipe (9) of a centrifugal compressor (1) are provided with respective solenoid valves (16, 17) for allowing a flow of fluid in a direction of flow under operation of fluid compression. One end of a bypass pipe (20) is connected to a part of the inlet pipe (7) located between the solenoid valve (16) and an impeller room (6). The other end of the bypass pipe (20) is connected to a part of the discharge pipe (9) located between the impeller room (6) and the solenoid valve (17). The bypass pipe (20) is provided with a solenoid valve (21) which closes under operation of fluid compression of the centrifugal compressor (1) while opening under deactivating operation of the centrifugal compressor (1).
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: April 27, 1999
    Assignee: Daikin Industries, Ltd.
    Inventor: Tsuyoshi Fukunaga
  • Patent number: 5474428
    Abstract: An oil pump driving device drives an oil pump combined with a transmission coupled to an engine for supplying working oil to lubricate the transmission and enable the transmission to make gear shifts. The transmission includes a first power transmitting mechanism for connecting the output shaft of an electric motor to the drive shaft of the oil pump, and a second power transmitting path for connecting the output shaft of the engine to the drive shaft of the oil pump. A controller for selecting one of the first and second power transmitting mechanisms at a time selects the first power transmitting mechanism to drive the oil pump with the electric motor when the rotational speed of the output shaft of the engine is lower than a predetermined speed, and selects the second power transmitting mechanism to drive the oil pump with the engine when the rotational speed of the output shaft of the engine exceeds the predetermined speed.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: December 12, 1995
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kiyoshi Kimura, Kazuo Ooyama, Shuichi Fujimoto, Makoto Kojima
  • Patent number: 5398506
    Abstract: Electrically operated hydraulic pump systems are commonly used on tailgate loaders and small dump truck hoists. The systems include a switch which, when closed, couples the vehicle battery to the pump driving motor and a hydraulic lowering valve which, when opened, drains the output port of the pump to a reservoir. The control system for this electric pump system comprises an air cylinder operatively connected to the switch and a second cylinder operatively connected to the hydraulic lowering valve. A switching valve is connected between each air cylinder and a source of air pressure. The switching valves may be operated by an operator to pump or drain hydraulic fluid.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: March 21, 1995
    Assignee: Diesel Equipment Limited
    Inventor: John C. Martin
  • Patent number: 5382138
    Abstract: A device for emptying the sewage holding tank of a boat. The device would have a frame, a tank mounted to the frame for the storage of sewage from the boat. In addition an engine would be mounted to the frame with the engine operating a pump also mounted to the frame. There would be at least one pair of hoses, with one hose, the discharge hose, having one end connected to the tank and the other end mounted to said pump. The second hose, the intake hose, could have one end mounted to the pump and the other end free. There would also be at least one pair of wheels mounted to and extending at least partially below the frame to facilitate the transportability of the device.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: January 17, 1995
    Inventor: Daniel T. Chilton
  • Patent number: 5380161
    Abstract: In a swash-plate compressor, pistons are slidably received in cylinder bores. A drive shaft is extended through a crank chamber, and is rotated through an electromagnetic clutch means associated therewith. A conversion mechanism is provided on the shaft for converting a rotational movement of the shaft into a reciprocation of each piston in the corresponding cylinder bore such that a suction stroke and a discharge stroke are alternately executed therein. A fluid is introduced from a suction chamber into the bore during the suction stroke, and during the compression stroke, the fluid is compressed in and discharged from the bore into a discharge chamber. The conversion mechanism is constituted such that a stroke length is shortened in response to an increase of a pressure in the crank chamber, and vice versa. A first passage communicates the crank with the suction chamber, and a second passage communicates the crank chamber with the discharge chamber.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: January 10, 1995
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Kenji Takenaka, Hideki Mizutani, Shigeyuki Hidaka, Osamu Hiramatsu, Toru Takeichi, Hiroaki Kayukawa
  • Patent number: 5312233
    Abstract: A rotary/reciprocating liquid dispensing pump for dispensing liquids in the nanoliter range has a narrow radial slot extending longitudinally from an end of a reciprocating, rotating cylindrical piston sliding in a smooth cylindrical bore of a pump housing at a closed end thereof, which slot extends outwardly to the periphery of the piston. The piston is selectively positioned in alignment with one of a plurality of circumferentially spaced small diameter radial passages within the housing opening directly to the cylindrical bore in the path of rotation of said slot. The ports thereof opening to the cylindrical bore are spaced circumferentially a distance in excess of the width of the slot. A linear liquid dispensing pump apparatus including such pump includes a stepping motor and an electromagnetic clutch/braking mechanism concentrically surrounding a lead screw, and the lead screw is threadably engaged with a stepping motor tubular rotor shaft.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: May 17, 1994
    Assignee: Ivek Corporation
    Inventors: Mark N. Tanny, Raymond A. LeBlanc, Douglas S. Bensley, Vernon W. Zeitz, John E. Barney
  • Patent number: 5197860
    Abstract: A hydraulic apparatus for a construction machine, which is adapted to prevent the number of revolutions of an engine from increasing when the flow of the fluid discharged by a variable displacement hydraulic pump driven by the engine is cut off. The hydraulic apparatus comprises a proportional solenoid (11) connected to a fuel supply control lever (13) so as to vary the horsepower characteristics of the engine, which are set by the action of a governor (12) based on manipulated variable of the fuel supply control lever (13) when the flow of the fluid discharged by said pump is cut off, and a controller (10) for controlling the proportional solenoid (11). In this apparatus, a decrement (.DELTA.Nr) in a target number of revolutions per minute (Nr) of the engine, which can be obtained by subtracting a target number of revolutions per minute (Nrb) of the engine at the desired engine horsepower characteristics (l.sub.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: March 30, 1993
    Inventors: Kimio Nishida, Toshio Yokoyama, Yukio Moriya, Takeshi Kobayashi
  • Patent number: 4927333
    Abstract: A fluid pump having a housing, a pair of rotors, a pair of rotor shafts for supporting the rotors in the housing, identical mating gears provided on the rotor shafts, and rotary drive for rotating the rotor shafts to rotate the rotors, and comprising a one-way clutch operatively connecting the rotary drive to the rotor shaft, a multiple-disc clutch operatively connecting the rotary drive to the other rotor shaft, and coils for generating a magnetic force by which the multiple-disc clutch is activated. When the multiple-disc clutch is not activated, rotation of the rotary drive is transmitted to the rotor shaft through the one-way clutch, and when the multiple-disc clutch is activated by the coils, rotation of the rotary drive is transmitted to the other rotory shaft through the multiple-disc clutch. By activating or inactivating of the multiple-disc clutch, it is possible to change the drive-driven relationship between the rotor shafts, so that a nonuniform wear of the mating gears is eliminated.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: May 22, 1990
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kichiro Kato
  • Patent number: 4895493
    Abstract: A rotary pump mechanism is disclosed which comprises a coupling section that couples an impeller and drives the coupling section and, in turn, the impeller. The coupling section incorporates most of the components of the pump that wear out and are expensive. As a result, the impeller can be disposed of without disposing of other components. The coupling section can also be changed for continuous operation of a single impeller. Although the preferred application of the invention is in the area of pumping blood and other biological fluids, the disclosed invention has utility in any application where it is desirable to turn an "impeller-like" element.
    Type: Grant
    Filed: August 18, 1988
    Date of Patent: January 23, 1990
    Inventor: Harold D. Kletschka
  • Patent number: 4721438
    Abstract: A fluid pump has a pumping member which defines the boundary of a pump chamber and is driven to reciprocate between the positions of expanding and contracting the pump chamber for drawing in the pump chamber a fluid and feeding it into a vessel to be pressurized thereby. The pumping member is connected to the output shaft of a reversible motor through a driving linkage capable of translating the rotary motion of the output shaft into the reciprocating motion of the pumping member. A release valve is provided in a fluid path between the pump chamber and the vessel for rapidly releasing the pressurized fluid out of the vessel.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: January 26, 1988
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tsutomu Ichinomiya, Koichi Ishino
  • Patent number: 4702083
    Abstract: An automatic transmission, for a vehicle with an engine, includes a hydraulic fluid pump which supplies pressurized hydraulic fluid. It is detected whether or not the engine is being started, and the pump output is controlled so as to be decreased when the engine is being started. If the pump is one whose output per one revolution of its input member is variable, then its output may be thus controlled by decreasing its output per one revolution when the engine is being started. And, if the pump is a variable capacity type vane type hydraulic fluid pump the output of which per one revolution of its input member is controlled by varying the eccentric position of a controlling member thereof, then its output per one revolution may be thus controlled by varying this eccentric position to give a pump output per one revolution decreased when the engine is being started.
    Type: Grant
    Filed: October 30, 1985
    Date of Patent: October 27, 1987
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Nakamura, Seitoku Kubo, Yutaka Taga
  • Patent number: 4600150
    Abstract: A spraying system includes a screw conveyor to transmit material to be sprayed from a storage container to a spray nozzle. A predetermined torque is maintained on the screw to thereby maintain a predetermined pressure on the material within the conveyor, so that an instantaneous flow of material at a predetermined pressure can be obtained when the nozzle is opened. The pressure is preferably maintained by means of a hydraulic motor designed to stall at a predetermined torque. A heating jacket for housing heated oil surrounds the screw conveyor and provides heat necessary to maintain the material therein at a predetermined temperature.
    Type: Grant
    Filed: April 22, 1980
    Date of Patent: July 15, 1986
    Inventor: F. Joseph Zelasko
  • Patent number: 4453893
    Abstract: The invention comprises a valve contained in a drainage line from a compressor tank and a control for operating the valve. The control includes a timer which comprises an air storage tank, an air bleed valve for bleeding the storage tank and structure for operating the valve in response to air pressure received from the air storage tank. The timer operator is initiated in response to deactivation of the compressor motor.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: June 12, 1984
    Inventor: Marlin L. Hutmaker