Having Means To Hold Or Resist Movement Of Pumping Element Patents (Class 417/214)
  • Patent number: 10890166
    Abstract: A non-pulsation pump is provided with: a cam mechanism that converts the rotational motion of a shared motor into reciprocal motion having a prescribed phase difference; a plurality of cross heads that make reciprocal motion with a prescribed phase difference through the cam mechanism; and a plurality of reciprocating pumps that are driven with a prescribed phase difference and that include plungers connected to the cross heads, wherein the total discharge flowrate toward a shared discharge pipe is kept constant. This non-pulsation pump includes a preliminary compression step for moving the plungers of the reciprocating pumps to a discharge side by very small amounts before a discharging step but after a suction step, and has a stroke adjustment mechanism for adjusting the effective stroke length of the plunger in the preliminary compression step. Thus, generation of pulsation can be suppressed even when the set pressure changes.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: January 12, 2021
    Assignee: NIKKISO CO., LTD.
    Inventors: Fusao Murakoshi, Hideaki Sato
  • Patent number: 10865900
    Abstract: The present invention provides an inexpensive valve unit fixing structure that enables a valve unit to be easily fixed without the need for unitization in advance, and a fluid pump that enables a discharge valve and a relief valve to be incorporated in a compact manner. The valve unit fixing structure includes a main body (3), a discharge communication passage (9) provided inside the main body (3), a discharge valve unit (10) which is provided in the main body (3) and which opens/closes the discharge communication passage (9), and deformed fixing parts (35) which are formed by plastically deforming the main body (3) and which fix the discharge valve unit (10) to the main body (3).
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: December 15, 2020
    Assignee: Keihin Corporation
    Inventors: Yohei Kaneko, Yuya Ogane
  • Patent number: 10271459
    Abstract: Apparatuses and methods are provided for protectively covering an air inlet or outlet of an air-moving assembly. The apparatus includes a protective cover assembly, which includes a retractable cover and a spring-biasing mechanism. The retractable cover transitions between a retracted state, when the air-moving assembly is operatively positioned within the chassis, and in extended state, when the air-moving assembly is withdrawn from the chassis. In retracted state, the retractable cover is retracted away from the air inlet or outlet, and in extended state, the retractable cover covers, at least partially, the air inlet or outlet. The spring-biasing mechanism is coupled to the retractable cover and biases the retractable cover in the extended state when the air-moving assembly is withdrawn from the chassis, and compresses to allow transition of the retractable cover to the retracted state as the air-moving assembly is inserted into operative position within the chassis.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: April 23, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Levi A. Campbell, Christopher R. Ciraulo, Milnes P. David, Dustin W. Demetriou, Robert K. Mullady, Roger R. Schmidt
  • Patent number: 10036369
    Abstract: A piston pump for a traction-controlled hydraulic vehicle braking system includes a pump piston and an annular piston that is arranged as a second piston in a resiliently loaded manner on the pump piston. As the delivery pressure increases, a resilient element is compressed and a stroke of the second piston is shortened so as to reduce a delivery quantity. This configuration enables a higher delivery pressure to be achieved for a given driving force. With low delivery pressure, the pump piston and the second piston deliver together so as to achieve a rapid build-up of pressure.
    Type: Grant
    Filed: October 17, 2015
    Date of Patent: July 31, 2018
    Assignee: Robert Bosch GmbH
    Inventor: Oliver Gaertner
  • Patent number: 9243749
    Abstract: A lubricant injector is provided including a body having a passageway, an inlet, an outlet, and an aperture for lubricant to flow from a measuring chamber into the passageway. A piston is slidable along the passageway. When the piston is in a retracted position, a discharge chamber is present in the passageway between the piston and the outlet. A biasing spring is disposed in the passageway for urging the piston towards the retracted position. The injector has a rest mode, wherein no pressurized lubricant is supplied to the inlet, and the piston is retracted. The injector has a pressurized mode wherein the piston is under pressure and is moved to its extended position to urge lubricant out the outlet. In the rest mode, the spring urges the piston towards its retracted position to create the discharge chamber and to open the aperture between the measuring chamber and the discharge chamber.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: January 26, 2016
    Assignee: Industrial Manufacturing Company International, LLC
    Inventor: Peter L. Clark
  • Patent number: 9175676
    Abstract: A fluid pump (10) has a compression member (12) having a variably-sized compression surface (13b) movable against fluid pressure in a chamber (22). The effective surface area of the compression member (12) decreases in size together with a corresponding cross-sectional area of the chamber (22) from a maximal area at a beginning of the compression stroke to a minimal area at the end of the compression stroke. Using a variably-sized surface area to compress a fluid volume allows obtaining a rapid gain of fluid pressure even for applications in which the compression member (12) is actuated at relatively low frequencies and under the action of relatively small forces.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: November 3, 2015
    Assignee: LES CHAUSSURES STC INC.
    Inventors: Regis Fortin, Andre Emond, Michel Bisson
  • Patent number: 8979506
    Abstract: Apparatus and methods to prevent the rotation of a shaft in one direction using a device comprising a collar disposed around the shaft, a locking arm with an unlocked position and a locked position, and an actuator capable of moving the locking-arm between the unlocked and locked position. When the locking arm is in the unlocked position, the collar and shaft are allowed to rotate in a first direction. However, when the locking arm is in the locked position, the collar and shaft are prevented from rotating in a second direction. This device can also be used to prevent the reverse rotation of a rotating compressor.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: March 17, 2015
    Assignee: Ingersoll-Rand Company
    Inventors: Omar M. Kabir, Edward S. Czechowski
  • Publication number: 20150044066
    Abstract: A reciprocating compressor may include a shell, a first cylinder, a plate, a second cylinder, and a piston. The first cylinder may be disposed within the shell and may include a first valve. The plate may be fixed relative to the first cylinder and may include a second valve. The second cylinder may be axially aligned with the first cylinder and may be moveable relative to the first cylinder between first and second positions. The piston may be disposed within the second cylinder and may include a third valve. The piston may reciprocate relative to the first and second cylinders. The piston and the plate may define a first compression chamber therebetween. The piston and the first cylinder may define a second compression chamber therebetween.
    Type: Application
    Filed: July 22, 2014
    Publication date: February 12, 2015
    Inventor: FRANK S. WALLIS
  • Publication number: 20140334947
    Abstract: A fluid pump system for a fluid delivery system is disclosed. The fluid pump system includes a drive cylinder and a drive piston slidably disposed in the drive cylinder. A drive rod including a crowned end is connected to the drive piston. The fluid system further includes a pump cylinder and a pump piston slidably disposed in the pump cylinder. A pump rod including a crowned end is connected to the pump piston. The drive rod and the pump rod are configured to be detachably coupled to each other, wherein the crowned end of the drive rod cooperates with the crowned end of the pump rod.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 13, 2014
    Applicant: Caterpillar Inc.
    Inventor: David E. Hackett
  • Patent number: 8851866
    Abstract: Embodiments are described for engaging a pumping cartridge with a pump drive. In certain embodiments, the cartridge, including a cylinder and a movable piston assembly, is initially assembled or subsequently positioned so that the distance between the attachment point on the piston assembly for coupling to a drive assembly, and a reference point on the cylinder, is greater than the maximal distance that will be encountered during normal oscillation of the piston during use. The cartridge, in certain embodiments, may be pressed into a drive assembly that immobilizes the cartridge and couples the piston assembly to the driveshaft. In certain embodiments, when the cartridge is fully inserted into the drive assembly, the piston is pressed into the cylinder sufficiently to establish a selected distance so that the piston shaft is in the proper position to engage with a coupling mechanism carried on the driveshaft.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: October 7, 2014
    Assignee: HydroCision, Inc.
    Inventors: Timothy E. Moutafis, Edward Bromander
  • Patent number: 8807222
    Abstract: A process is provided for reducing the pressure for injecting a solution of water-soluble polymer from a given injection pump into various oil wells in a given field as a function of the fracturation pressure for each well. Between the injection pump and each well, a respective main volumetric pump is placed. The fracturation pressure of each well is detected with a respective manometer, and the flow rate of each volumetric pump is controlled, using a brake, as a function of detected fracturation pressure of the respective well.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: August 19, 2014
    Assignee: S.P.C.M. SA
    Inventor: Philippe Jeronimo
  • Patent number: 8550218
    Abstract: A brake actuator has a motor that provides input rotation in first and second directions. A reducer couples to the motor and reduces the input rotation into an output rotation to be applied to a brake screw of a progressive cavity pump drive. A sensor measures rotational speed of the drive shaft. In manual operation, an operator can view an indication of the rotational speed and can manually operate the motor accordingly to control rotation of the shaft. In automated operation, a controller automatically controls the motor based on the rotational speed measured by the sensor. The controller can also use a torque sensor to detect the torque applied to the brake screw, a displacement sensor to detect displacement of the brake screw, and/or a current sensor to detect the current consumption of the motor.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: October 8, 2013
    Assignee: Weatherford Industria e Comecio Ltda.
    Inventors: Jorge Robles Villa, Eduardo Perdomini Lara
  • Patent number: 8529225
    Abstract: An electromagnetic reciprocating fluid device in which a movable member is equipped with permanent magnets, resists a torque rotating the movable member about an axis thereof in the reciprocating direction. The electromagnetic reciprocating fluid device has a pair of electromagnets facing each other, and permanent magnets disposed in a space between the opposed electromagnets and held by a movable member. When an alternating current is applied to coils formed in the electromagnets, a magnetic force is generated between the electromagnets and the permanent magnets, whereby a driving force for reciprocation is applied to the movable member. One end of the movable member is connected to a piston of a first piston-cylinder assembly, while the other end is connected to a piston of a second piston-cylinder assembly.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: September 10, 2013
    Assignee: Nitto Kohki Co., Ltd.
    Inventors: Shigemitsu Ishibashi, Haruki Nakao, Fuminori Hirose
  • Publication number: 20130205769
    Abstract: An apparatus is provided for harnessing ocean wave energy, wherein the apparatus relieves excessive loadings on components to avoid damage thereof in adverse wave conditions. The apparatus includes a buoyant actuator and a pump anchored within the body of water. Fluid at high pressure is pumped ashore by the pump, energy is extracted as useful work at an on-shore plant, and the resultant reduced pressure fluid is returned to the offshore pump to be re-energized. The buoyant actuator is operably connected to the pump by tether and is buoyantly suspended within the body of water above the pump. The buoyant actuator is provided with a connector that includes a damping mechanism configured to maintain a substantially rigid connection between the hollow body and the tether until such time as loading therebetween exceeds a prescribed load whereupon the damping mechanism facilitates limited relative movement therebetween to relieve the loading.
    Type: Application
    Filed: August 16, 2011
    Publication date: August 15, 2013
    Inventors: Jonathan Pierre Fievez, Greg John Allen, Laurence Drew Mann
  • Patent number: 8500700
    Abstract: A dosing unit for an ambulatory infusion device and a method of operation are disclosed. The dosing unit includes a stationary member, a movable member, and a plunger. The movable member and the stationary member, together, make a charging valve and a discharging valve. The plunger is located, at least in part, in a metering cavity of the movable member and the movable member is adapted to selectively couple and decouple a driving unit, such that, by operating the driving unit with the movable member being coupled with the driving unit, the movable member moves with the plunger to maintain a position of the plunger relative to the movable member along a displacement axis, and by operating the driving unit with the movable member being decoupled from the driving unit, the plunger is displaced while the position of the movable member is maintained.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: August 6, 2013
    Assignee: Roche Diagnostics International AG
    Inventors: Ulrich Haueter, Martin Wyss, Florian Kuehni
  • Patent number: 8491278
    Abstract: An auxiliary braking device can be used for wellhead applications having a progressive cavity pump. A housing of the device independently mounts on the pump's existing drive using a mounting member, and an adapter on the housing connects to a rotatable drive shaft of the pump. A hydraulic motor on the housing has a motor shaft mechanically coupled to the adapter by a plurality of gears or the like. A control valve couples to the hydraulic motor and operates to control communication of hydraulic fluid through the hydraulic motor, thereby controlling rotation of the rotatable shaft. A controller and electric sensors can operated the control valve in response to the sensed rotation of the shaft. Alternatively, mechanical mechanisms can operate the control valve in response to the rotation of the drive shaft.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: July 23, 2013
    Assignee: Weatherford Industria E Comecio Ltda.
    Inventors: Paulo Mello, Eduardo Perdomini Lara, Dalnei Tomedi
  • Patent number: 8469930
    Abstract: A dosing unit for an ambulatory infusion device and a method of operation are disclosed. The dosing unit includes a stationary member, a movable member, and a plunger. The movable member and the stationary member, together, make a charging valve and a discharging valve. The plunger is located, at least in part, in a metering cavity of the movable member and the movable member is adapted to selectively couple and decouple a driving unit, such that, by operating the driving unit with the movable member being coupled with the driving unit, the movable member moves with the plunger to maintain a position of the plunger relative to the movable member along a displacement axis, and by operating the driving unit with the movable member being decoupled from the driving unit, the plunger is displaced while the position of the movable member is maintained.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: June 25, 2013
    Assignee: Roche Diagnostics International AG
    Inventors: Ulrich Haueter, Martin Wyss, Florian Kuehni
  • Patent number: 8439656
    Abstract: A liquid pump for an internal combustion engine having a housing in which a pump rotational shaft is accommodated, in particular a water pump of a heat exchanger circuit of a vehicle, and an eddy current arrangement is provided at least partially inside the housing of the liquid pump. The invention furthermore relates to a device for heating a liquid.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: May 14, 2013
    Assignee: LICOS Trucktec GmbH
    Inventor: Andreas Wolf
  • Patent number: 8323245
    Abstract: An infusion device with safeguards for protecting a patient from inappropriate infusion during a malfunction comprises a pump, an electronic controller for controlling the pump, and a mechanical stop facility for stopping the pump by mechanically blocking pump motion. The stop facility periodically requires resetting by the controller to continue infusion.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: December 4, 2012
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Hans List, Hans-Peter Haar
  • Patent number: 8197238
    Abstract: A pump apparatus includes a drive shaft supported rotatably in a pump body; a power transmission member attached to the drive shaft, and configured to transmit power to the drive shaft; a pump element configured to pressurize and discharge working fluid; a discharge passage formed in the pump body, and configured to introduce the pressurized working fluid-discharged from the pump element to an external of the pump body; a control valve configured to control an amount of working fluid to be discharged through the discharge passage to the external, by controlling a movement of a valving element of the control valve on the basis of the pressurized working fluid; and an electromagnetic valve provided between the power transmission member and the control valve, and configured to control the control valve or a fluid pressure acting on the valving element of the control valve based on the pressurized working fluid.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: June 12, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Shigeaki Yamamuro, Hideo Konishi
  • Publication number: 20110150670
    Abstract: A pump for a transmission, including: a housing with a pneumatic port; and a gear for engaging with a pump hub for a torque converter, wherein the pneumatic port is for introducing compressed air into the housing to restrict rotation of the gear. In an example embodiment, restricting rotation of the gear is to prevent rotation of the gear when the gear is interfaced with the pump hub to rotationally lock the gear with the pump hub. A pump for a transmission, including: a housing; a gear for engaging with a pump hub for a torque converter; and, an element for enabling rotation of the gear in a first rotational direction and locking the gear with respect to rotation in a second rotational direction, opposite the first rotational direction. In an example embodiment the element includes a one-way clutch.
    Type: Application
    Filed: December 20, 2010
    Publication date: June 23, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: William BREES, Philip GEORGE, Michael VAN SICKLE, Christopher KRAUSE, Jeffrey HEMPHILL, Chad MULLEN
  • Publication number: 20100322788
    Abstract: An auxiliary braking device can be used for wellhead applications having a progressive cavity pump. A housing of the device independently mounts on the pump's existing drive using a mounting member, and an adapter on the housing connects to a rotatable drive shaft of the pump. A hydraulic motor on the housing has a motor shaft mechanically coupled to the adapter by a plurality of gears or the like. A control valve couples to the hydraulic motor and operates to control communication of hydraulic fluid through the hydraulic motor, thereby controlling rotation of the rotatable shaft. A controller and electric sensors can operated the control valve in response to the sensed rotation of the shaft. Alternatively, mechanical mechanisms can operate the control valve in response to the rotation of the drive shaft.
    Type: Application
    Filed: September 1, 2010
    Publication date: December 23, 2010
    Applicant: WEATHERFORD INDUSTRIA E COMERCIO LTDA.
    Inventors: PAULO MELLO, EDUARDO PERDOMINI LARA, DALNEI TOMEDI
  • Publication number: 20100310385
    Abstract: The invention relates to electric linear motors and gas springs in reciprocating pumps for oil wells. By the use of this invention a simple, silent, compact and adaptable mechanism can be constructed to drive a wide range of such pumps. The mechanism will sense a variety of pumping conditions and react automatically thereto.
    Type: Application
    Filed: September 25, 2007
    Publication date: December 9, 2010
    Applicant: Crostek Management Corp a corporation
    Inventor: Phillip Denne
  • Patent number: 7841838
    Abstract: A rotary closed type compressor is configured such that an inside of a case becomes high pressure, and the rotary closed type compressor comprises a first cylinder and a second cylinder having cylinder chambers in which eccentric rollers are housed, respectively, vanes which divide the cylinder chamber into two sections, respectively, and vane chambers in which back-face side end portions of the vanes are housed, respectively. The vane on the first cylinder side is pressed and biased by a spring member provided in the vane chamber, and the vane on the second cylinder side is pressed and biased according to pressure difference between case internal pressure introduced to the vane chamber and suction pressure or discharge pressure introduced to the cylinder chamber.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: November 30, 2010
    Assignee: Toshiba Carrier Corporation
    Inventors: Isao Kawabe, Kazuo Mochizuki, Shoichiro Kitaichi, Koji Hirano, Izumi Onoda, Kazu Takashima
  • Patent number: 7806665
    Abstract: An auxiliary braking device can be used for wellhead applications having a progressive cavity pump. A housing of the device independently mounts on the pump's existing drive using a mounting member, and an adapter on the housing connects to a rotatable drive shaft of the pump. A hydraulic motor on the housing has a motor shaft mechanically coupled to the adapter by a plurality of gears or the like. A control valve couples to the hydraulic motor and operates to control communication of hydraulic fluid through the hydraulic motor, thereby controlling rotation of the rotatable shaft. A controller and electric sensors can operated the control valve in response to the sensed rotation of the shaft. Alternatively, mechanical mechanisms can operate the control valve in response to the rotation of the drive shaft.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: October 5, 2010
    Assignee: Weatherford Industria e Comercio Ltda.
    Inventors: Paulo Mello, Eduardo Perdomini Lara, Dalnei Tomedi
  • Publication number: 20090214359
    Abstract: A liquid pump for an internal combustion engine having a housing in which a pump rotational shaft is accommodated, in particular a water pump of a heat exchanger circuit of a vehicle, and an eddy current arrangement is provided at least partially inside the housing of the liquid pump. The invention furthermore relates to a device for heating a liquid.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 27, 2009
    Applicant: Linnig Trucktec GmbH
    Inventor: Andreas WOLF
  • Patent number: 7553132
    Abstract: A micro device is provided that includes a body defining a chamber for receiving fluid. A rotational element is disposed in the chamber for acting on the fluid. The rotational element is rotatable about an axis in response to a rotating magnetic field. The micro device further includes a clutch mechanism having a first disengaged configuration and a second engaged configuration wherein the clutch mechanism engages the rotational element and prevents rotation of the same.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: June 30, 2009
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Hongrui Jiang, David J. Beebe, Abhishek K. Agarwal, Francisco J. Atencia-Fernandez
  • Patent number: 7090470
    Abstract: An apparatus and method for controlling a linear compressor is provided. The linear compressor controlling apparatus includes a voltage detection unit, a current detection unit, a control unit and a compressor drive unit. The voltage detection unit detects a voltage supplied to the linear compressor, while the current detection unit detects a current supplied to the linear compressor. The control unit determines whether a collision of a piston of the compressor with a valve of the compressor occurs using output signals of the voltage and current detection units, and controls the amplitude of the piston if the collision of the piston with the valve occurs. The compressor drive unit controls the amplitude of the piston under the control of the control unit.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: August 15, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Tae-Duk Kim
  • Patent number: 6679684
    Abstract: A pump device comprising a support member having a fitting recess, a movable member which is reciprocated in said fitting recess to suck a working fluid, pressurize the fluid and deliver the pressurized fluid, and a movement restricting device operable to deform a wall at least partially defining the fitting recess of the support member, such that the wall is deformed toward the movable member, for restricting a reciprocating movement of the movable member in the fitting recess, at least when an amount of the pressurized fluid required to be delivered by the pump device is smaller than a nominal delivery amount of the pump device.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: January 20, 2004
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yoshiaki Kominami
  • Patent number: 6533562
    Abstract: An improved scroll compressor has condition responsive lubricant volume flow. The lubricant is preferably delivered to a tap positioned adjacent the suction chamber such that lubricant is delivered into the scroll compressor in a quantity which is desirable for normal operation of the scroll compressor. A valve is associated with the tap, and restricts the flow of lubricant through the tap to a first more restrictive non-actuated position. If operational conditions within the scroll compressor indicate that a greater lubricant flow would be desirable, the valve moves to an actuated position at which it is less restrictive to the flow of lubricant.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: March 18, 2003
    Assignee: Scroll Technologies
    Inventor: Zili Sun
  • Patent number: 6524078
    Abstract: A pond pump having a housing (1) enclosing a synchronous motor (9) with a drive shaft (40) on which an impeller (20) is loosely fitted so that, on start up, the shaft (40) can rotate relative to the impeller (20) until a pair of diametrically opposed keyways (43) on the shaft engage and entrain keyways (27) on the impeller (20) to rotate it continuously in one direction. If the drive shaft initially rotates in the opposite direction, pegs (25) on the rear face of the impeller (20) engage with a detent (60) located behind the impeller (20) to stop said rotation until the motor (9) restarts and rotates the drive shaft (43) in said first direction. One end of the drive shaft (40) is received in a first bearing (50) mounted in the housing (1), the other end of said shaft being received in a blind bore (28) in the impeller (20) which is coaxial with the axis of rotation of the shaft (40).
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: February 25, 2003
    Assignee: Pet Mate Ltd.
    Inventors: Steve Martin Brooks, Robert Weidemann
  • Publication number: 20020141879
    Abstract: A cooling fan system has a fan assembly that is removably housed in a chassis. The fan assembly receives electrical power, and the fan blades rotate when housed inside the chassis. As the fan assembly is removed from an opening in the chassis, the power to the fan assembly is disconnected, but the fan blades may continue to rotate. A mechanical stopper, such as a row of bristles that extends into the opening in the chassis, interferes with the rotation of the fan blades as the fan assembly is removed from the chassis. The mechanical stopper stops rotation of the fan blades, thereby preventing harm to the user removing the fan assembly. After the fan assembly is completely removed from the chassis, a spring-loaded door closes the opening in the chassis further protecting the user from contacting adjacent spinning fan blades or hazardous energy sources within the chassis.
    Type: Application
    Filed: March 29, 2001
    Publication date: October 3, 2002
    Inventors: Casey Winkel, Donovan Van Sleet, Robin A. Steinbrecher
  • Publication number: 20020110460
    Abstract: A pump device comprising a support member having a fitting recess, a movable member which is reciprocated in said fitting recess to suck a working fluid, pressurize the fluid and deliver the pressurized fluid, and a movement restricting device operable to deform a wall at least partially defining the fitting recess of the support member, such that the wall is deformed toward the movable member, for restricting a reciprocating movement of the movable member in the fitting recess, at least when an amount of the pressurized fluid required to be delivered by the pump device is smaller than a nominal delivery amount of the pump device.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 15, 2002
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yoshiaki Kominami
  • Publication number: 20020038551
    Abstract: A reciprocating compressor with a linear motor, having a piston (1) reciprocating inside a cylinder (2); a cylinder head (5) provided with suction and discharge orifices (5a, 5b), and a valve means (10) mounted inside the cylinder (2) and having an operative position, seated against the discharge orifice (5b), defined when the top of the piston (1) is within a certain distance (D) from the cylinder head (5), said distance being defined, so that, at the end of the compression stroke of the piston (1), be reached inside the cylinder (2) a determined pressure that will result in a force on the piston (1) opposite to that force which is impelling said piston (1) and which is sufficient to interrupt its compression stroke before impacting the cylinder head (5).
    Type: Application
    Filed: November 16, 2001
    Publication date: April 4, 2002
    Applicant: Empresa Brasileira De Compressores S.A.-Embraco
    Inventors: Dietmar Erich Bernhard Lilie, Rinaldo Puff
  • Patent number: 6347571
    Abstract: A drive device which has small dimensions an axial and radial directions. The small dimensions of the device are a result of a brake body of a friction brake provided in the drive device being located at least partially within an enclosure configured in a rotor.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: February 19, 2002
    Assignee: Mannesmann Rexroth AG
    Inventors: Sinclair Cunningham, Peter Wuesthof
  • Patent number: 6341945
    Abstract: A number of embodiments are disclosed in which scroll compressor elements are actuated upon a particular condition being sensed within the scroll compressor. Upon the condition being sensed, elements are actuated which restrict the orbit radius of the orbiting scroll. In this way, conditions such as low charge, reverse rotation, and low suction pressure are encountered with little damage to the scroll compressor.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: January 29, 2002
    Assignee: Scroll Technologies
    Inventors: Jason J. Hugenroth, Thomas R. Barito
  • Patent number: 6200106
    Abstract: The present invention relates to a fan for an internal combustion engine. The fan has a locking device for a fluid friction clutch in the form of a pivoting hook that may be mounted subsequently at a fixed location using a holding device and may be triggered using an electromagnet. The electromagnet may be accommodated in the circuit of an ignition lock such that when the engine is started, the fan wheel is prevented from rotating unintentionally.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: March 13, 2001
    Assignees: Behr GmbH & Co., Magenta GmbH Systemlieferant Fuer Elektromagnetische Baugruppen, Bayerishce Motoren Werke Aktiengesellschaft
    Inventors: Hans Martin, Franz A. Bierbrauer, Rudolf Wichtl, Wolfgang Kuttler
  • Patent number: 6113355
    Abstract: A pump drive head includes a housing, and a main shaft carried on upper and lower bearings disposed in the housing. The main shaft includes an outer torque tube and a liner tube. The outer and liner tubes abut along a first portion of their length and are separated along a second portion of their length forming a double wall with an elongate tubular space in between. A standpipe is coupled at one end to the housing, below the lower bearing, and received by the elongate tubular space an eliminates the need for a lower seal on the main shaft. A hydraulic pump includes a hydraulic pump chamber displosed in the housing and communicating with the main shaft, and first and second gears disposed in the hydraulic pump chamber and the first gear coupled to the main shaft. The second gear intermeshes with the first gear. A suction port is located between the first and second gears and operable when the main shaft is rotated in a reverse direction from the normal pumping direction, during a condition known as backspin.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: September 5, 2000
    Assignee: Weatherford Holding U.S., Inc.
    Inventors: Vern Arthur Hult, Edward Leigh Schubert
  • Patent number: 6074172
    Abstract: A controller is provided to control and fix the stroke and frequency of the piston movement of the compressor under various operating conditions. The controller includes a signal generator for providing a first signal, a detector generating a second signal after detecting that the piston has a displacement, and a signal processing unit electrically connected to the signal generator and the detector for outputting a control signal to the compressor after receiving the first signal and the second signal to control a movement of the piston.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: June 13, 2000
    Assignee: National Science Council
    Inventor: Bin-Juine Huang
  • Patent number: 6016691
    Abstract: A module for an on-board evaporative emission leak detection system that detects leakage from an evaporative emission space of an automotive vehicle fuel system, and corresponding method that calibrates a leak detection module pump to set a desired stroke of a moveable wall in the pump of such evaporative emission leak detection system. A pump disposed within interior space of the module has an inlet in communication with the interior space and an outlet that communicates through a flow passage with the evaporative emission space. A vent valve within the interior space is selectively operable to a first state that vents the flow passage to the interior space of the module, thereby venting the evaporative emission space to atmosphere, and to a second state that does not vent the flow passage to the interior space. An electromechanical actuator within the interior space operates the pump and the vent valve by respective magnetically responsive levers.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: January 25, 2000
    Assignee: Siemens Canada Ltd.
    Inventors: John E. Cook, Paul D. Perry
  • Patent number: 5879136
    Abstract: An electro hydraulically adjustable pump has an adjustment member which is adjustable by at least one adjustment piston, a control valve which acts upon the at least one adjusting piston, a servo amplifier which triggers the control valve and which is supplied with an actual value of a pump adjustment and an actual value of a control valve adjustment, and an element which produces an additional pulse-shape adjusting signal as a function of an angle of rotation of the pump so as to control the control valve through the servo amplifier by the additional pulse-shaped adjustment signal.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: March 9, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Walter Robeller, Berthold Pfuhl, Volkmar Leutner, Dieter Bertsch, Joachim Zumbraegel
  • Patent number: 5741120
    Abstract: A scroll-type machine is disclosed which is particularly well suited for use as a compressor in refrigeration and air conditioning systems and incorporates a unique arrangement for modulating the capacity thereof. In one group of embodiments the capacity of the scroll-type machine is modulated by relative axial movement between the scroll members so as to form a leakage path across the wrap tips and opposed end plates. In another group of embodiments, modulation is achieved by reducing the orbital radius of one of the scroll members to thereby form a leakage path across the flank surfaces of the wraps. Both types of scroll separation may be accomplished in a time pulsed manner to thereby enable a full range of modulation with the duration of the loading and unloading periods being selected to maximize the efficiency of the overall system.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 21, 1998
    Assignee: Copeland Corporation
    Inventors: Mark Bass, Roy J. Doepker, Jean-Luc M. Caillat, Wayne R. Warner
  • Patent number: 5567122
    Abstract: A cylinder pump having a controllable piston/drive detachment is disclosed that can engage or disengage a piston rod using a solenoid. Most any type of drive can be used. The cylinder pump could have one or more cylinders. Each cylinder and piston rod has quick connect and disconnect mountings. The cylinder pump could be a syringe pump or drive.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: October 22, 1996
    Assignee: Barry J. Walter
    Inventor: Harvey Schulte
  • Patent number: 5507266
    Abstract: Fuel pressure in a deadheaded fuel rail is regulated by an eddy current clutch that forms part of the mechanism that mechanically couples the engine crankshaft with a fuel pump which delivers pressurized fuel to the rail. An electric control that receives several inputs, including engine speed and fuel rail pressure, controls the degree of coupling that is provided by the clutch so that the pressure is regulated even though the engine speed and fuel demand change during normal engine operation.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: April 16, 1996
    Assignee: Siemens Automotive L.P.
    Inventors: Danny O. Wright, Russell J. Wakeman
  • Patent number: 5503536
    Abstract: A pump having a reciprocating piston/plunger unit adapted to be actuated by a railway wheel rolling over it has a unitary plunger and piston, with the piston double-acting so that when the outlet pressure exceeds a certain value, the plunger remains retracted. An accumulator is provided in fluid communication with the outlet so as to store accumulated hydraulic pressure.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: April 2, 1996
    Assignee: Applied Power Inc.
    Inventors: Carl G. Waldenstrom, Xudong Yu
  • Patent number: 5378112
    Abstract: A primary vane pump has a rotor with vanes, and an intermediate casing, which is also rotatable, both mounted in a fixed housing. The rotor vanes are enclosed in the casing and provide a primary pumping stage. The rotatable intermediate casing has outer vanes enclosed within the fixed housing, which provide a governor stage vane pump when the casing rotates. An inlet annulus supplies fuel to passages in the rotatable casing leading to the primary pumping stage and other passages in the rotatable casing conduct pumped fluid out to a discharge annulus. A closed fluid loop is established from discharge annulus to the governor stage vane pump, out through a valve and back to the discharge annulus. The reaction on the casing caused by the primary pump rotor tends to rotate the intermediate casing, while pressure drop through the valve in the closed fluid loop resists rotation. Adjustment of the valve adjusts rotational speed of the intermediate casing and varies the delivery rate of fuel by the primary vane pump.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: January 3, 1995
    Assignee: P. J. Nasvytis International, Ltd.
    Inventor: Pius J. Nasvytis
  • Patent number: 5358036
    Abstract: A relatively simple hydraulically operated disc brake mechanism for drive systems which store reactive torque by reason of being under torsion is disclosed. Certain drive systems such as the drive strings for deep well submersible pumps store considerable reactive torque due to torsional stresses. Such torque must be controllably released if drive power is interrupted. The disc brake mechanism includes a housing that defines a reservoir for lubricating oil for the bearings of a shaft that drives a bi-directional hydraulic pump. When the shaft turns in an operating direction, the pump pumps the lubricating oil in a closed circuit through a filter and back to the reservoir. If normal operation is interrupted and the reactive torque in the system is released, the bi-directional pump forces oil through a control manifold to a disc brake caliper which brakes a disc rotor attached to the shaft. The faster the shaft turns as it releases reactive torque, the more braking force applied.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: October 25, 1994
    Inventor: Robert A. R. Mills
  • Patent number: 5320498
    Abstract: A support structure for a plunger employed in a plunger pump, comprises a pump housing, a cylinder firmly fitted into a cylindrical hollow defined in said housing, a plunger slidably enclosed in the cylinder to provide a pumping action, a stopper arranged on an inner peripheral surface of the cylinder, and an engaging portion arranged on the outer peripheral surface of the plunger, for engaging with the stopper and for restricting an axially projecting amount of the plunger relative to the cylinder.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: June 14, 1994
    Assignee: Unisia Jecs Corporation
    Inventor: Takeshi Fuchida
  • Patent number: 5284424
    Abstract: The invention relates to a pump arrangement, especially for the operation of an osmotic water purifier comprising a filter housing (10) having a raw water inlet (11), a filtrate outlet (15), a reject outlet (16), and a flush valve (18) adapted to be opened for flushing raw water through the filter housing. The pump arrangement comprises a high pressure pump (12) for supplying raw water at the required pressure, and a circulation pump (13) for recirculating a relatively large flow through the filter housing. The high pressure pump (12) consists of a sliding vane pump of the type in which the vanes (24) are caused to sealingly engage the surrounding wall of the pump chamber by a hycraulic pressure supplied from the pressure side of the high pressure pump.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: February 8, 1994
    Assignee: Aktiebolaget Electrolux
    Inventors: Fredrik Dellby, Per A. Fonser, Peter H. Hagqvist
  • Patent number: RE40400
    Abstract: A scroll-type machine is disclosed which is particularly well suited for use as a compressor in refrigeration and air conditioning systems and incorporates a unique arrangement for modulating the capacity thereof. In one group of embodiments the capacity of the scroll-type machine is modulated by relative axial movement between the scroll members so as to form a leakage path across the wrap tips and opposed end plates. In another group of embodiments, modulation is achieved by reducing the orbital radius of one of the scroll members to thereby form a leakage path across the flank surfaces of the wraps. Both types of scroll separation may be accomplished in a time pulsed manner to thereby enable a full range of modulation with the duration of the loading and unloading periods being selected to maximize the efficiency of the overall system.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: June 24, 2008
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Mark Bass, Roy J. Doepker, Jean-Luc M. Caillat, Wayne R. Warner