Adjustment With Respect To Common Drive Patents (Class 417/429)
  • Patent number: 8951025
    Abstract: A dual drive pump system for rear wheel or front wheel drive automatic transmission in a motor vehicle includes a dual drive pump disposed off-axis of the transmission input shaft axis and driven by a gear train driven by a hub. The dual drive pump is also driven by a gear train driven by an auxiliary motor. Torque multiplication through the gear train allows the dual drive pump to have a smaller displacement while still providing the hydraulic pressure needs of the transmission. The dual drive pump may be driven by either an engine or the auxiliary motor depending on the operating conditions of the motor vehicle.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: February 10, 2015
    Assignee: GM Global Technology Operations, LLC
    Inventor: John C. Schultz
  • Patent number: 8827660
    Abstract: The invention relates to a wind turbine being provided with a fluid displacement means for ensuring a certain increased pumping capacity at a certain reduced rotational speed of the main shaft of the rotor and thus of a drive shaft from a gear box of the wind turbine. The invention also relates to a wind turbine being provided with fluid displacement means for ensuring a certain increased pumping capacity at a certain increased rotational speed of the main shaft of the rotor and thus of a drive shaft from a gear box of the wind turbine. The means may be mechanical, hydraulic, pneumatic or electrical. Additionally, the invention relates to a method for operating a wind turbine being provided with such fluid displacement means.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: September 9, 2014
    Assignee: Vestas Wind Systems A/S
    Inventors: Poul Spaerhage Frokjaer, Jens Demtroder
  • Patent number: 8801407
    Abstract: A hydraulic power device for effecting operation of at least one load, the hydraulic power device including a motor having a predetermined motor speed rating and motor power rating, at least one pump operably coupled to the motor, the pump being configured to provide, to the at least one load, a predetermined hydraulic fluid flow at the predetermined motor speed rating, and a variable frequency drive connected to the motor, the variable frequency drive being configured to effect operation of the motor at a speed above the predetermined motor speed rating such that the at least one pump operates to provide an excess hydraulic fluid flow during operation of the motor substantially above the predetermined motor speed rating where the excess fluid flow is greater than the predetermined hydraulic fluid flow.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: August 12, 2014
    Assignee: Harris Waste Management Group, Inc.
    Inventor: Edwin K. Simpson
  • Patent number: 8690553
    Abstract: In certain embodiments, a service pack includes an engine, a tandem pump system coupled to the engine, and a controller. The tandem pump system may include a first pump and a second pump in tandem with one another. The controller may be configured to enable the first pump at a first load condition associated with the engine, the second pump at a second load condition associated with the engine, and both the first and second pumps at a third load condition associated with the engine. The load conditions may correspond to engine loads, hydraulic loads, or other loads associated with the engine. For example, at a low hydraulic pressure, the controller may selectively operate both the first and second pumps, whereas the controller may selectively operate only the first pump or the second pump at high and medium hydraulic pressures, respectively. In this manner, the system can provide suitable flow without overloading the engine.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: April 8, 2014
    Assignee: Illinois Tool Works Inc.
    Inventor: Mark E. Peters
  • Patent number: 8668465
    Abstract: If a hydraulic system has several modes of operation, in particular a mode with a high pressure demand (II) and a mode with a high fluid flow demand (II), the hydraulic fluid pump has to be built with an accordingly high fluid flow output. Such a pump is expensive. Therefore it is suggested, to provide two pumps. I.e. a controllable main pump (2) is provided, which supplies the hydraulic consumer (6) during phases (I) of high pressure demand. During phases (II) of high fluid flow demand, normally, relatively low pressures are sufficient. Therefore, it is suggested to provide a parallel boost pump (9), which supplies the hydraulic consumer (6) in addition to the high pressure pump (2), if a high fluid flow is needed. Excess fluid flow output is avoided by controlling the fluid output flow of main pump 2.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: March 11, 2014
    Assignee: Sauer-Danfoss Aps
    Inventors: Luke Wadsley, Niall Caldwell
  • Patent number: 8579599
    Abstract: A system for changing a pump displacement configuration includes a blender that provides low-pressure fluid to a pump. The pump has a power end and fluid end, where the fluid end includes a number of plungers. The system includes an actuator that couples the power end with a selectable subset of the plungers. The system further includes a controller that selects a subset of the plungers according to a job pumping rate, a job pumping pressure, and/or a fluid end failure event indicator. The controller further commands the actuator to couple the selected subset of the plungers to the power end.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: November 12, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Edward Leugemors, Rajesh Luharuka
  • Patent number: 8517693
    Abstract: Starter arrangement for high power rotating equipment strings with multiple compressors driven by a single turbine or motor includes multiple variable fluid drive torque converters (CSTCs) to start the compressors in a pressurized start. The string can use a single CSTC for each compressor or a single CSTC for more than one compressor with at least two CSTCs for a given string. The starting procedure is sequential. After the turbine or motor is started and brought up to speed, successive CSTCs are operated from zero to lock-up speed sequentially to start each compressor or group of compressors in turn. In order to cool the working fluid of the CSTCs, a single heat exchanger is provided and the working fluid of each CSTC in turn is circulated through the heat exchanger as they are sequentially started.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: August 27, 2013
    Assignee: ExxonMobil Upstream Research Company
    Inventors: William L. Martin, Christopher G. Holt
  • Patent number: 8506267
    Abstract: A technique facilitates the pumping of fluids in a well related application while minimizing the number of system components. The system and methodology comprise a plurality of pumps for use at a well site to deliver a well treatment fluid to a desired location. A single driveline is coupled between the plurality of pumps and a motive unit without incorporating a splitter box. The driveline is driven by the motive unit to rotate the plurality of pumps.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: August 13, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Philippe Gambier, Laurent Coquilleau, Edward Leugemors, Jean-Louis Pessin, Rod Shampine
  • Patent number: 8231359
    Abstract: A pump unit includes a main pump (4) and a charge pump (5), the pump capacity of which is adjustable via an adjusting element. To adjust the pump capacity of the charge pump (5), an adjusting element of the charge pump (5) is acted upon by an adjusting force which is dependent on the inlet pressure of the main pump (4).
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: July 31, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Merz, Ulrich Gordon Mohn, Rene Constantin Scheerer, Martin Josef Zug
  • Publication number: 20110135521
    Abstract: A device for adjusting the free stroke for hydraulic brakes of bicycles or motorcycles of the type comprising a pump assembly (4) for operating an actuator element (16), and a communication line (17) for a working fluid, set between said pump assembly and said actuator element, said device being characterized in that it comprises an expansion chamber (25) set along said communication line between said pump assembly and said actuator element.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 9, 2011
    Inventor: Giancarlo VEZZOLI
  • Patent number: 7942654
    Abstract: The present invention provides an addressable multi-channel peristaltic pump. According to the invention, this pump design allows for selection and operation of one or more pump heads on a drive shaft, while locking other non-selected pump heads in a stationary position. It is possible to operate the multi-channel pump using a limited number of motors, preferably two motors: a selector motor and a dispense motor. Thus, the pump provides for pumping or dispensing of one or more fluids without the need for multiple pumps. Likewise, compared with typical single motor multi-channel systems, where all pump heads on the drive shaft must rotate at the same time, the present invention provides for selective dispensing of one or more fluids. The pumps of the present invention are suitable for any multiple fluid transfer application, including in automated multi-channel reagent dispensing systems, such as nucleic acid purification systems.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: May 17, 2011
    Assignee: Agilent Technologies, Inc.
    Inventor: James Chang
  • Patent number: 7827961
    Abstract: A pump is provided for pumping two or more different fluids. The pump comprises a body having a longitudinal bore and at least first and second inlets selectively communicating with and providing passage to the bore via non-return valves. A plunger is mounted for reciprocation within the bore and at least one piston is also mounted for reciprocation within the bore so as to permit at least one type of fluid to pass into the bore through one or both inlets.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: November 9, 2010
    Assignee: Delphi Technologies Holding S.arl
    Inventor: Michael Peter Cooke
  • Patent number: 7789638
    Abstract: A pump includes a base and a cylinder installed on the base. The base defines a pumping channel. The cylinder defines a first chamber and a second chamber with a diameter different from that of the first chamber. The first and second chambers are in communication with the pumping channel. A first check valve only allows air to travel into the pumping channel from the first chamber. A second check valve allows air to travel into the pumping channel from the second chamber. A first piston is movable in the first chamber. A second piston is movable in the second chamber. A control device prevents the venting of air from the chambers in a first mode, vents air from the second chamber without traveling through the pumping channel in a second mode, and vents air from the first chamber without traveling through the pumping channel in a third mode.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: September 7, 2010
    Inventor: Louis Chuang
  • Publication number: 20100098571
    Abstract: A pump apparatus for transporting at least one fluid, comprising a shaft, wherein the shaft has a longitudinal axis; a motor, wherein the motor is adapted to rotate the shaft about the longitudinal axis; and, a plurality of gerotors, wherein the gerotors are attached to the shaft along the longitudinal axis and wherein the shaft rotation actuates the plurality of gerotors rotation, causing pumping of the at least one fluid.
    Type: Application
    Filed: November 15, 2006
    Publication date: April 22, 2010
    Applicant: Foam In Place Co. Ltd.
    Inventors: Dvir Brand, Brian H. Bunnett, Philip Neil Theurer, Shlomo Nevo, Uzi Emanuel Aharony, Jonathan Knaan
  • Patent number: 7544050
    Abstract: An hydraulic proportioning system having a fluid actuated motor with a driven motor shaft, the motor being in fluid communication with and powered by a fluid source. A pump is provided having a drive shaft driven by the driven motor shaft of the fluid actuated motor, and a drive clutch interconnecting the driven motor shaft and the drive shaft of the pump. An injector manifold is in fluid communication with the pump which is connectable to a chemical source. A tube is in fluid communication with the injector manifold and extends into a chamber having fluid communication with the fluid source, the chemical and fluid from the fluid source combining in the chamber and discharged therefrom.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: June 9, 2009
    Assignee: Bio-Cide International, Inc.
    Inventors: William C. Hunt, Neeraj Khanna
  • Patent number: 7452193
    Abstract: A pump assembly includes a base plate upon which a drive motor is mounted and pump plate upon which first and second pumps are mounted. The pump plate is adjustably mounted on the base plate so as to be moveable between first and second positions relative to the base plate. In the first position, the first pump is operatively engaged with the motor and the second pump is disengaged from the motor. In the second position, the second pump is operatively engaged with the motor and the first pump is disengaged from the motor. An operator can quickly and easily change from one pump to the other simply by loosening thumbnuts, repositioning the pump plate on the base plate, and tightening the nuts.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: November 18, 2008
    Assignee: Vector Corporation
    Inventor: Nigel Patrick Wright
  • Patent number: 7384183
    Abstract: An apparatus capable of mixing and dispensing a decontaminant foam that is useful in strategic and tactical decontamination comprises in one embodiment a plurality of tanks 11, a pump assembly that is capable of mixing binary or multi-component decontaminant fluids in a desired ratio, and a manifold for mixing the fluids. In an alternative embodiment, the invention provides a mobile decontamination module, wherein a wheeled platform is provided for supporting the tanks 11, pump assembly, manifold, and a boom for dispensing foam-based of liquid-based decontaminant such that the module is compatible with the on-load and off-load equipment aboard a heavy transport vehicle.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: June 10, 2008
    Assignee: Global Ground Support, LLC
    Inventor: Richard Lee Smith
  • Patent number: 7275735
    Abstract: A cooling tower and/or a fan drive system are provided which enhance cooling performance, are able to reduce lateral temperature gradients at least to some degree, provide for easy removal of debris and/or provide for easy fan adjustment.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: October 2, 2007
    Assignee: SPX Cooling Technologies, Inc.
    Inventors: Glenn Brenneke, Larry Burdick, Hobart Cox, Mark Kauffmann, Robert Lewis, Jason Stratman, Eric Wiedemann
  • Patent number: 7162948
    Abstract: An assembly includes a piston and a transition arm coupled to the piston. The position of the transition arm is adjustable to vary a stroke of the piston. A balance member is adjustable relative to the transition arm to counterbalance the transition arm in varying positions. A control rod is coupled to the transition arm and the balance member. Linear movement of the control rod moves the transition arm in a first direction to change the stroke of the piston and moves the balance member in a second direction substantially opposite the first direction to counterbalance the transition arm. A method of counterbalancing a variable stroke assembly includes moving a transition arm coupled to a piston to vary a stroke of the piston, and moving a balance member in a direction substantially opposite to the direction of movement of the transition arm to counterbalance the transition arm.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: January 16, 2007
    Assignee: R. Sanderson Management, Inc.
    Inventors: Robert A. Sanderson, Albert E. Sanderson
  • Patent number: 7090475
    Abstract: A hydraulic control circuit for a radial piston engine with two speeds. The changeover between the speeds takes place through the alteration of the absorption volume, the delivery side being connected to the discharge side with a bypass connection by a valve arrangement for a selected number of engine pistons. The control circuit provides a space-saving way of ensuring that the changeover between speeds occurs smoothly and in such a manner to preserve the individual components as far as possible. To this end, at least one intermediate switching position, in which the delivery side is throttled to the discharge side, i.e. connected by a diaphragm-type arrangement, is provided in front of valve arrangement between the two end switching positions. The valve arrangement is preferably driven such that a valve body can be moved through the intermediate switching position at a controlled speed.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: August 15, 2006
    Assignee: Mannesmann Rexroth AG
    Inventor: Chris Shrive
  • Patent number: 6973798
    Abstract: An air conditioning system 1 includes a primary compressor (an engine-driven compressor 6) driven by a primary driving source (an engine 2) and a secondary compressor (a motor-driven compressor 7) driven by a secondary driving source (a motor 3). When a required cooling capability is equal to or greater than a predetermined value, the air conditioning system 1 causes the primary compressor (the engine-driven compressor 6) to be driven by the primary driving source (the engine 2) and adjusts the rotational speed of the secondary compressor (the motor-driven compressor 7), whereas when the required cooling capability is equal to or smaller than the predetermined value, the air conditioning system 1 causes the secondary compressor (the motor-driven compressor 7) to be driven by the secondary driving source (the motor 3) so as to control the rotational speed of the primary compressor (the engine-driven compressor 6).
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: December 13, 2005
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hiroshi Ikura, Hiromitsu Adachi, Masamichi Kubota, Hideki Watanabe, Shinichirou Wakou
  • 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
  • Patent number: 6913447
    Abstract: A metering pump includes an actuating mechanism, and a plurality of piston cylinders coupled to the actuating mechanism. A first of the cylinders has a working volume that differs from a second of the cylinders. The actuating member is centrally located and the cylinders are arranged radially about the actuating mechanism. The working volume of the cylinders can be varied by adjusting the spacing of the cylinders from the actuating mechanism, thus varying the stroke of pistons housed within the cylinders, and/or by providing the cylinders with different inner diameters. A method of metering fluids includes independently adjusting stroke of a plurality of pistons to adjust the volume of metered fluid, and selecting different cylinder diameters to adjust the volume of metered fluid.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: July 5, 2005
    Assignee: R. Sanderson Management, Inc.
    Inventors: John Fox, Robert A. Sanderson
  • Patent number: 6783331
    Abstract: A pump system for multi-phase fluids that includes a drive-shaft (11), mechanical differential units (12, 22, 23, 23′, D1 . . . Dn) and pumps (14, 14′, 25, 25′, 25″, 25′″, B1 . . . Bn) where the differential units allow for the changing of pump rotation speeds between pumps(14, 14′, 25, 25′, 25″, 25′″, B1 . . . Bn) so as to adjust the compressibility of fluids in order to reduce or eliminate circulatory flow. There is also a description of the method of operating the system according to the invention.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: August 31, 2004
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventors: Divonsir Lopes, Elisio Caetano Filho
  • Patent number: 6659726
    Abstract: A system for variable speed control of a plurality of motors under variable load demand is provided. The system includes a constant power source and a plurality of motors having electrical circuits with switches to connect with the constant power source. The system further includes a variable speed drive for driving each of the plurality of motors at variable speed, wherein each of the plurality of motors includes a switch to connect with the variable speed drive. Each of the plurality of motors is selectively electrically connected with the variable speed drive and the constant power source via the switches, for driving the each of the plurality of motors at one of variable and constant speed in response to load demands. To prevent short cycling of the motors under situations of increasing system demand, the control algorithm for the electrical switches provides hysteresis by overspeeding one of the motors before switching from variable speed mode to constant speed mode.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: December 9, 2003
    Assignee: Carrier Corporation
    Inventor: Steve Holden
  • Patent number: 6579067
    Abstract: A system for variable speed control of a plurality of compressors under variable load demand. The system includes a constant power source and a plurality of compressor motors having switches to connect with the constant power source. The system further includes a variable speed drive for driving any one of the plurality of compressor motors at variable speed, wherein each of the plurality of compressor motors includes a switch to connect with the variable speed drive. Each of the plurality of compressor motors is selectively electrically connected with the variable speed drive or the constant power source via the switches, for driving the each of the plurality of motors at one of variable or constant speed in response to compressor load demands.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: June 17, 2003
    Assignee: Carrier Corporation
    Inventor: Steven J. Holden
  • 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: 20020001526
    Abstract: A pump system is provided where low pressure (4) and high pressure (6) pumps are coaxially mounted to receive motive power from a shared drive (300). The drive shafts are arranged such that one extends within a void in the other and both have shear regions such that, in the event of torque overload, either shaft can shear so as to disconnect the drive to it's associated pump while the other pump and shaft can continue to work.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 3, 2002
    Inventor: Rodney Stuart Howard
  • Patent number: 6162023
    Abstract: A multi-pump controlling means and method controls and drives two or more reciprocating pumps creating proportioned flows of fluids. The multi-pump controlling means in use is situated between a driving means, such as a double acting ram, and the pumps. The multi-pump controlling means includes two or more cams that each interact with a cam follower attached to the pumps. The cams may be set or adjusted to different gradients, meaning the cam followers following those gradients when the multi-pump controlling means is reciprocated by the driving means, will have different path lengths. The path lengths of the cam followers control the stroke lengths of the respective pumps and thus the volume of fluid pumped by each of the respective pumps.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: December 19, 2000
    Inventor: Graeme Harold Newman
  • Patent number: 6109894
    Abstract: A device consisting of two piston pumps for supplying two separate liquid systems, particularly a fuel injection system and an oil system in an internal combustion engine.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: August 29, 2000
    Inventor: Michel Chatelain
  • Patent number: 6022198
    Abstract: A double pump unit including two hydraulic pumps (1, 2) having drive shafts (5, 6) arranged coaxially with one another, which shafts are coupled with one another in a force-locking manner by a coupling piece (23). The coupling piece (23) is integrated in a connection piece (26) at least partially surrounding the coupling piece, in which connection piece there are formed suction channels (19, 20) for drawing in the pressure medium to be delivered through the hydraulic pumps (1, 2). The connection piece (26) has an inlet pressure chamber (33) into which the suction channels (19, 20) open. Further, the coupling piece (23) has peripherally arranged blade elements (30, 31) which rotate in the inlet pressure chamber (33) in order to feed the pressure medium into the suction channels (19, 20) under an initial pressure.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: February 8, 2000
    Assignee: Brueninghaus Hydromatik GmbH
    Inventor: Hermann Hoffmeister
  • Patent number: 5775881
    Abstract: The present invention relates to an oil supply system with at least one pressure and/or volume dependent controllable pump (1) and an oil tank (5) or the like from which the pump draws oil and delivers it with controlled output pressure or output volume to a system (8) to be supplied.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: July 7, 1998
    Inventor: Bodo Stich
  • Patent number: 5599177
    Abstract: A precision metering, multiple fluid pumping system comprised of a main pump for pumping a primary fluid and an auxiliary pump for pumping a secondary fluid adjustably linked to work in unison with the main pump. The auxiliary pump is linked to the main pump through a rack and pinion gear system connected to an oscillating arm that operates the auxiliary pump simultaneously with the main pump. The auxiliary pump is infinitely adjustable over a selected range by varying the connecting point of the auxiliary pump to the oscillating arm. The connecting point is varied by a worm screw adjustment that provides precision adjustment and metering of a secondary fluid. The system also includes a clutch mechanism between the auxiliary pump oscillating arm and a rack and pinion gear system to disengage the auxiliary pump for priming.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: February 4, 1997
    Assignee: Binks Manufacturing Company
    Inventor: Robert D. Hetherington
  • Patent number: 5536151
    Abstract: The invention covers a device for the pneumatic delivery of concrete that is hydromechanically transported in an enclosed stream (2) with a concrete pump (1) for the hydromechanical transport, and a solidification accelerator dosing device.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: July 16, 1996
    Assignee: Friedrich Wilh. Schwing GmbH
    Inventor: Karl-Ernst von Eckardstein
  • Patent number: 5522711
    Abstract: A precision metering, multiple fluid pumping system comprised of a main pump for pumping a primary fluid and an auxiliary pump for pumping a secondary fluid adjustably linked to work in unison with the main pump. The auxiliary pump is linked to the main pump through a rack and pinion gear system connected to an oscillating arm that operates the auxiliary pump simultaneously with the main pump. The auxiliary pump is infinitely adjustable over a selected range by varying the connecting point of the auxiliary pump to the oscillating arm. The connecting point is varied by a worm screw adjustment that provides precision adjustment and metering of a secondary fluid. The system also includes a clutch mechanism between the auxiliary pump oscillating arm and a rack and pinion gear system to disengage the auxiliary pump for priming.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: June 4, 1996
    Assignee: Binks Manufacturing Company
    Inventor: Robert D. Hetherington
  • Patent number: 5423662
    Abstract: A precision metering, multiple fluid pumping system comprised of a main pump for pumping a primary fluid and an auxiliary pump for pumping a secondary fluid adjustably linked to work in unison with the main pump. The auxiliary pump is linked to the main pump through a rack and pinion gear system connected to an oscillating arm that operates the auxiliary pump simultaneously with the main pump. The auxiliary pump is infinitely adjustable over a selected range by varying the connecting point of the auxiliary pump to the oscillating arm. The connecting point is varied by a worm screw adjustment that provides precision adjustment and metering of a secondary fluid. The system also includes a clutch mechanism between the auxiliary pump oscillating arm and a rack and pinion gear system to disengage the auxiliary pump for priming.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: June 13, 1995
    Assignee: Binks Manufacturing Company
    Inventor: Robert D. Hetherington
  • Patent number: 5395216
    Abstract: Disclosed is a portable car-used oil extracting and tire inflation apparatus with separately disposed oil and air pumps. A first embodiment of the apparatus mainly includes a motor with a rotary shaft on upper and lower ends thereof. The upper rotary shaft is connected by an eccentric pin to a rocker arm of an oil pump assembly disposed at an upper front portion of the apparatus. The lower rotary shaft is similarly connected to a rocker arm of an air pump assembly disposed at a lower front portion of the apparatus. When the motor is turned on the rocker arms reciprocate in linear movement, and the oil and the air pump assemblies extract and drain oil from a sump of a vehicle and inflate tires of the vehicle, respectively.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: March 7, 1995
    Inventor: Yi-Hsien Lin
  • Patent number: 5326232
    Abstract: A two stage main pump has a first pump portion that is drivingly connected to an input shaft and a second pump that is drivingly connectable with the input shaft by a speed sensitive mechanism. The speed sensitive mechanism is urged by a resilient member to connect the second pump portion with the input shaft as well as to a centrifugal flyweight mechanism that is responsive to the rotary speed of the input shaft in order to urge a disconnection of the second pump from the input shaft.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: July 5, 1994
    Assignee: General Motors Corporation
    Inventors: David A. McDonnel, Karl L. Swartout
  • Patent number: 5284249
    Abstract: A flotation apparatus for floating minerals from fluid containing minerals in particulate form. The flotation apparatus includes a hydraulic motor directly connected to a drive shaft for driving a rotor located in the flotation cell, the hydraulic motor being powered by a hydraulic power pack having dual gear pumps to circulate hydraulic fluid at pressures of up to 2900 psi to drive the hydraulic motor. The dual gear pumps include a smaller gear pump for developing high pressure at low flow for quick, soft start of the flotation apparatus. Once started, the larger pump automatically takes over to provide high flow at lower pressure to develop rotor speed of approximately 160 RPM.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: February 8, 1994
    Assignee: Dorr-Oliver Incorporated
    Inventors: George A. Lawrence, Andres Paredes, Roderick R. Roy
  • Patent number: 5158438
    Abstract: An easily adjustable and serviceable plural component pumping system has a frame assembly with a pivotable drive beam. The drive beam passes through spherical rod bearings in the connecting rod of two positive displacement pumps. The pumps are mounted to the frame via hand tightenable clamps so that by loosening the clamp the pumps may be slid along the frame to vary the ratio or remove for servicing without the need for too.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: October 27, 1992
    Assignee: Graco Inc.
    Inventors: Andrew Olson, Lawrence Kelly
  • Patent number: 5140747
    Abstract: A method of assembling a peristaltic pump having a motor housing having a driveshaft extending therefrom and a pump housing containing a pump including a rotor mounted on a stub shaft extending through the pump housing wherein the motor housing and the pump housing are detachably connected together. They are assembled by positioning the motor housing and the pump housing so as to axially align the stub shaft and the driveshaft, and moving the pump housing towards the motor housing in the axial direction of the driveshaft so that the driveshaft enters the pump housing and engages the rotor while the stub shaft is urged axially out of the pump housing. When the pump housing contains two or more rotors the stub shaft preserves the alignment of the rotors both during manufacture of the pump assembly and transportation of the pump housing.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: August 25, 1992
    Assignee: Brightwell Dispensers Limited
    Inventors: David G. Barnett, Ronald Skinner
  • Patent number: 5108271
    Abstract: The invention refers to a multiple connection of rotation vacuum pumps having a common housing and drive motor. The vacuum pumps arranged in two rows. Each one of the vacuum pumps has a pump gear, and these gears, together with a drive gear, are arranged such that they form a single row with their teeth drivingly intermeshed. Preferably only inner parts of the pump are located in the housing.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: April 28, 1992
    Assignee: Leybold Aktiengesellschaft
    Inventors: Hanns-Peter Berges, Wolfgang Leier
  • Patent number: 5104300
    Abstract: Dosing apparatus for adding a metered quantity of liquid additive to slurry or other flowable material handled by a ram-type positive displacement main pump (10) includes a positive displacement metering pump (32) whose outlet (44) connects into a material carrying portion of the main pump e.g. its inlet (22). The metering pump is driven by a rocking lever (48) connecting it to the main pump ram (14) through adjustment means comprising a lead screw (62) along an arm (50) of the lever for selectively shifting a slide block (68) linked to the metering pump piston rod (42); the slide block being secured against movement on the lever arm once adjustment has been effected by clamping means (74).
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: April 14, 1992
    Assignee: Thomas Willett & Co., Ltd.
    Inventors: John Matheson, Peter Hassall, Colin Smith
  • Patent number: 5032065
    Abstract: A variable displacement radial piston pump includes a plurality of pump sections which are grouped into two. A first group of pump sections are communicable through a first discharge passage with a third discharge passage. A second group of pump sections are communicable through a second discharge passage with the third discharge passage. A control valve is provided for selectively supplying discharge from said first and second groups of pump sections to the third discharge passage and thereby stepwisely varying the discharge through the third discharge passage.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: July 16, 1991
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Sigeaki Yamamuro, Nobuteru Hitomi
  • Patent number: 5016440
    Abstract: Apparatus is provided for delivering a controllable, variable flow of pressurized fluid. Conduits define a circulating fluid flow system, the flow system passing through a transducer for transferring energy as a mechanical input or output to or from pressurized fluid circulating in the system. At least first and second volumetric pumps are connected to conduits of the flow system in parallel relation to each other and in flow communication with the transducer. An operating shaft, preferably a single shaft, engages the first and second pumps. Valves and piping are provided for selectively shunting and isolating the first and second pumps from the fluid flow system. Thus, energy applied to the fluid flow system through either the shaft or transducer may be applied to the other of the shaft or transducer with variable pressure and flow velocity in the flow system, depending on whether one or both of the pumps are in operating mode with the flow system.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: May 21, 1991
    Inventor: William F. Sager
  • Patent number: 4930994
    Abstract: An electric motor driven radial piston pump for a motor vehicle brake system with slip control is disclosed wherein the radial piston pump includes two parallel working circuits drivable by the drive motor. The working pressure of the first working circuit is limited to a preset value. Above the preset value only the second working circuit is effective.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: June 5, 1990
    Assignee: Alfred Teves GmbH
    Inventor: Ludwig Budecker
  • Patent number: 4917580
    Abstract: A drive mechanism for controlling pump mechanisms for simultaneous delivery of two atomizer liquids in selectable ratio to a sprayer device comprising two pneumatically actuated piston-cylinder drive mechanisms (air motors comprising reversing valve) and two pumps driven by the piston rods of the air motors. The intake side of each of said pumps is connected to a delivery side which, in turn, is connected to the sprayer device. The piston rods of the air motors are mechanically connected to one another by an adjustable balance arm. Both air motor are respectively provided with two pilot valves that are mechanically actuatable by the motor piston to control the reversing valves of the air motors.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: April 17, 1990
    Assignee: Wagner International AG
    Inventor: Georg Schnetzer
  • Patent number: 4907950
    Abstract: A fluid pump has two pairs of rectangular oppositely-disposed pistons. The pistons of each pair travel simultaneously in opposite directions at the same speed and over the same distance. Valving is provided by a reciprocating port plate, in face-to-face relation to the piston, driven in a circular path from two spaced crankpins and which in turn drives the associated piston. The sliding movement of the port plate controls the alignment of inlet and exhaust ports in the piston and port plate. The excursion or "throw" of the pistons can be varied from zero to maximum. A crankpin throw-adjusting mechanism simultaneously adjusts the throw of each crankpin, some in one direction, some in the opposite, so that all chambers are automatically adjusted for varying, but always identical, displacements. Self-lubricated seals between the piston and chamber walls are spring loaded, by an elastomerically sealed structure having non-linear deflection-to-force characteristics.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: March 13, 1990
    Inventor: Michel A. Pierrat
  • Patent number: 4806079
    Abstract: Apparatus for simultaneously pumping two or more different liquids to a spraying device has a pair of discrete diaphragm pumps for each liquid. The pumps of each pair are connected in parallel and operate alternatingly so that one pump delivers a metered quantity of liquid while the pumping chamber of the other pump receives a metered quantity of the same liquid and vice versa. The capacities of pumps of at least one pair are adjustable in a simultaneous operation, and all pumps are operated by a common prime mover.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: February 21, 1989
    Assignee: Kopperschmidt-Mueller GmbH & Co. KG
    Inventor: Wolfgang Kuhn
  • Patent number: 4789310
    Abstract: A multi-functional implement useful as a portable automobile accessory which includes a main casing and an air functional portion mounted in the main casing. The air functional portion includes a first mechanism for blowing air outwardly of the main casing and a second mechanism for pumping air under pressure outwardly of the main casing. A motor having an output shaft extending in a longitudinal direction is movably mounted in a frame which is mounted in the main casing such that the motor is movable back and forth in the longitudinal direction. A lever is pivotably mounted to the main casing and connected to the motor for moving the motor between a first position at which the motor is engageable with the first mechanism to effect blowing of air outwardly of the main casing and a second position at which the motor is engageable with the second mechanism to effect pumping of air under pressure outwardly of the main casing.
    Type: Grant
    Filed: January 5, 1987
    Date of Patent: December 6, 1988
    Inventor: Michael Hung