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by varying the useful pumping length of the cooperating members in the axial direction

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  • F04C14/185
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations

Current Industry

F04C14/185by varying the useful pumping length of the cooperating members in the axial direction
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Progressing cavity pump and methods of operation
    • Patent number 11,499,549
    • Issue date Nov 15, 2022
    • Activate Artificial Lift Inc.
    • Stephen Barbour
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pressure proportional control valve
    • Patent number 11,384,864
    • Issue date Jul 12, 2022
    • CKD Corporation
    • Yoshiyuki Yamada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Continuously variable transmission and transmission system
    • Patent number 11,280,402
    • Issue date Mar 22, 2022
    • HCVTRANSMISSION B.V.
    • Petrus Johannes Buijsman
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Variable displacement gear pump
    • Patent number 11,047,382
    • Issue date Jun 29, 2021
    • Soon Gil Jang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump comprising an adjusting device and a control valve for adjusti...
    • Patent number 10,544,784
    • Issue date Jan 28, 2020
    • Schwabische Huttenwerke Automotive GmbH
    • Uwe Meinig
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Internal gear pump with improved communication between inlet and id...
    • Patent number 9,683,564
    • Issue date Jun 20, 2017
    • Viking Pump, Inc.
    • Scott M. Meyer
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Lubricant pump and control piston
    • Patent number 9,181,946
    • Issue date Nov 10, 2015
    • Audi AG
    • Jürgen Ernst
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Gear pump with continuous variable output flow rate
    • Patent number 9,091,265
    • Issue date Jul 28, 2015
    • Pavol Figura
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump device
    • Patent number 8,926,299
    • Issue date Jan 6, 2015
    • Yamada Manufacturing Co., Ltd.
    • Manabu Watanabe
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Displacement pump with suction groove
    • Patent number 8,899,951
    • Issue date Dec 2, 2014
    • Schwabische Huttenwerke Automotive GmbH
    • Kim Boris Friedrich
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Adjustable rotary pump with reduced wear
    • Patent number 8,770,955
    • Issue date Jul 8, 2014
    • Schwabische Huttenwerke Automotive GmbH
    • Christof Lamparski
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Variable capacity fluidic machine
    • Patent number 8,550,796
    • Issue date Oct 8, 2013
    • VHIT S.p.A.
    • Armando Codeca
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Adjusting valve for adjusting the delivery volume of a displacement...
    • Patent number 8,523,535
    • Issue date Sep 3, 2013
    • Schwäbische Hüttenwerke Automotive GmbH & Co. KG
    • Christof Lamparski
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gear pump enabling efficient pump capacity change
    • Patent number 8,376,724
    • Issue date Feb 19, 2013
    • TBK Co., Ltd.
    • Keisuke Shinozaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Long life telescoping gear pumps and motors
    • Patent number 8,215,932
    • Issue date Jul 10, 2012
    • Limo-Reid, Inc.
    • James A. O'Brien, II
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Adjustable rotary pump with reduced wear
    • Patent number 8,186,982
    • Issue date May 29, 2012
    • Schwabische Huttenwerke Automotive GmbH & Co. KG
    • Christof Lamparski
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Oil pump for an internal combustion engine
    • Patent number 7,967,580
    • Issue date Jun 28, 2011
    • Dr. Ing. h.c.F. Porsche AG
    • Norman Wöckel
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable capacity gerotor pump
    • Patent number 7,832,997
    • Issue date Nov 16, 2010
    • MAGNA Powertrain, Inc.
    • Matthew Williamson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gear pump
    • Patent number 7,717,690
    • Issue date May 18, 2010
    • TBK Co., Ltd.
    • Takeshi Hoji
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    High pressure telescoping gear pumps and motors
    • Patent number 7,686,601
    • Issue date Mar 30, 2010
    • Limo-Reid, Inc.
    • James A. O'Brien, II
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    External toothed wheel pump comprising a relieving pocket
    • Patent number 7,654,806
    • Issue date Feb 2, 2010
    • Shwaebische Huettenwerke Automotive GmbH & Co. KG
    • Markus Hanst
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable capacity pump/motor
    • Patent number 7,588,431
    • Issue date Sep 15, 2009
    • Limo-Reid, Inc.
    • James A. O'Brien, II
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Oil pump for an internal combustion engine
    • Patent number 7,544,052
    • Issue date Jun 9, 2009
    • Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    • Norman Wöckel
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic hybrid powertrain system
    • Patent number 7,281,376
    • Issue date Oct 16, 2007
    • Hybra-Drive Systems, LLC
    • James A. O'Brien, II
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Variable capacity pump/motor
    • Patent number 7,179,070
    • Issue date Feb 20, 2007
    • Hybra-Drive Systems, LLC
    • James A. O'Brien, II
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gear pump with variable throughput volume
    • Patent number 7,137,798
    • Issue date Nov 21, 2006
    • TCG Unitech Systemtechnik GmbH
    • Alfred Götschhofer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary machine
    • Patent number 6,547,546
    • Issue date Apr 15, 2003
    • Alexandr Anatolievich Stroganov
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable-delivery external gear pump
    • Patent number 6,283,735
    • Issue date Sep 4, 2001
    • Schwäbische Hüttenwerke GmbH
    • Bernd Schreiber
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pressure compensated variable displacement internal gear pumps
    • Patent number 6,244,839
    • Issue date Jun 12, 2001
    • University of Arkansas
    • Jack H. Cole
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable displacement apparatus and method of using same
    • Patent number 5,724,812
    • Issue date Mar 10, 1998
    • William E. Baker
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    VACUUM PRESSURE PROPORTIONAL CONTROL VALVE
    • Publication number 20200248685
    • Publication date Aug 6, 2020
    • CKD CORPORATION
    • Yoshiyuki YAMADA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    VARIABLE DISPLACEMENT GEAR PUMP
    • Publication number 20200141405
    • Publication date May 7, 2020
    • Soon Gil JANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE DISPLACEMENT GEAR PUMP
    • Publication number 20200141406
    • Publication date May 7, 2020
    • Soon Gil JANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    CONTINUOUSLY VARIABLE TRANSMISSION AND TRANSMISSION SYSTEM
    • Publication number 20200049250
    • Publication date Feb 13, 2020
    • HCVTRANSMISSION B.V.
    • Petrus Johannes BUIJSMAN
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE DISPLACEMENT PUMP WITH AXIAL DISPLACEMENT OF THE VANES
    • Publication number 20180372094
    • Publication date Dec 27, 2018
    • UNIVERSIDADE DE AVEIRO
    • António Manuel GODINHO COMPLETO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Rotary Fluid Transfer Apparatus and Associated Methods
    • Publication number 20180363648
    • Publication date Dec 20, 2018
    • WaveLIFT Limited
    • Hugh Edward Fisher
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE DISPLACEMENT GEAR PUMP
    • Publication number 20180223839
    • Publication date Aug 9, 2018
    • Soon Gil JANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE DISPLACEMENT HYDRAULIC PUMP WITH ELECTROMECHANICAL ACTUATO...
    • Publication number 20180058449
    • Publication date Mar 1, 2018
    • Joseph Johnson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE DISPLACEMENT PUMP
    • Publication number 20160252080
    • Publication date Sep 1, 2016
    • SCHAEFFLER TECHNOLOGIES AG & CO. KG
    • Dominik Herkommer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Rotary Fluid Transfer Apparatus and Associated Methods
    • Publication number 20150233374
    • Publication date Aug 20, 2015
    • Hugh Edward Fisher
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    HYBRID VARIABLE EXTERNAL GEAR PUMP
    • Publication number 20140056732
    • Publication date Feb 27, 2014
    • MAGNA POWERTRAIN
    • Liping Wang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Speed Regulator
    • Publication number 20140050596
    • Publication date Feb 20, 2014
    • Kalle TANSKANEN
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    LUBRICANT PUMP AND CONTROL PISTON
    • Publication number 20130129554
    • Publication date May 23, 2013
    • Audi AG
    • Jürgen Ernst
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    GEAR PUMP WITH CONTINUOUS VARIABLE OUTPUT FLOW RATE
    • Publication number 20130039794
    • Publication date Feb 14, 2013
    • Pavol Figura
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMP DEVICE
    • Publication number 20120244027
    • Publication date Sep 27, 2012
    • Yamada Manufacturing Co., Ltd.
    • Manabu WATANABE
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ADJUSTABLE ROTARY PUMP WITH REDUCED WEAR
    • Publication number 20120219448
    • Publication date Aug 30, 2012
    • Schwäbische Hüttenwerke Automotive GmbH & Co., KG
    • Christof Lamparski
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCREW SPINDLE PUMP ARRANGEMENT
    • Publication number 20120121450
    • Publication date May 17, 2012
    • ROBERT BOSCH GmbH
    • Robert Eckert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE CAPACITY FLUIDIC MACHINE
    • Publication number 20120107162
    • Publication date May 3, 2012
    • VHIT S.P.A.
    • Armando Codeca
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    DISPLACEMENT PUMP WITH SUCTION GROOVE
    • Publication number 20120020825
    • Publication date Jan 26, 2012
    • SCHWABISCHE HUTTENWERKE AUTOMOTIVE GMBH
    • Kim Boris Friedrich
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMPS AND PUMP HEADS COMPRISING VOLUME-COMPENSATION FEATURE
    • Publication number 20120003107
    • Publication date Jan 5, 2012
    • Micropump, Inc.
    • Stephen Michael Burns
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    ADJUSTABLE ROTARY PUMP WITH REDUCED WEAR
    • Publication number 20110182760
    • Publication date Jul 28, 2011
    • SCHWÄBISCHE HUTTENWERKE AUTOMOTIVE GMBH & CO.KG
    • Christof Lamparski
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE-VOLUME INTERNAL GEAR PUMP
    • Publication number 20110038746
    • Publication date Feb 17, 2011
    • Siegfried A. Eisenmann
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    GEAR PUMP
    • Publication number 20100086422
    • Publication date Apr 8, 2010
    • TBK CO., LTD.
    • Keisuke Shinozaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL PUMP FOR AN INTERNAL COMBUSTION ENGINE
    • Publication number 20090123314
    • Publication date May 14, 2009
    • Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    • Norman Wockel
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    High pressure telescoping gear pumps and motors
    • Publication number 20090110584
    • Publication date Apr 30, 2009
    • James A. O'Brien, II
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ADJUSTING VALVE FOR ADJUSTING THE DELIVERY VOLUME OF A DISPLACEMENT...
    • Publication number 20090041605
    • Publication date Feb 12, 2009
    • SCHWÄBISCHE HUTTENWERKE AUTOMOTIVE GMBH & CO.KG
    • Christof Lamparski
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Variable Capacity Gerotor Pump
    • Publication number 20080166251
    • Publication date Jul 10, 2008
    • MAGNA POWERTRAIN INC.
    • Matthew Williamson
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    GEAR PUMP
    • Publication number 20080044308
    • Publication date Feb 21, 2008
    • TBK CO., LTD.
    • Takeshi Hoji
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LONG LIFE TELESCOPING GEAR PUMPS AND MOTORS
    • Publication number 20080038136
    • Publication date Feb 14, 2008
    • James A. O'Brien
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE CAPACITY PUMP/MOTOR
    • Publication number 20080031763
    • Publication date Feb 7, 2008
    • James A. O'Brien II
    • B60 - VEHICLES IN GENERAL