using sliding valves

Patents Grantslast 30 patents

  • Information Patent Grant

    Variable displacement pump

    • Patent number 11,268,508
    • Issue date Mar 8, 2022
    • Hitachi Astemo, Ltd.
    • Shigeyuki Miyazawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic device that controls pulsation in first oil by increasing...

    • Patent number 10,865,812
    • Issue date Dec 15, 2020
    • Honda Motor Co., Ltd.
    • Shinichi Hirai
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Positive displacement pump having multiple operating stages

    • Patent number 10,451,060
    • Issue date Oct 22, 2019
    • Continental Automotive GmbH
    • Christian Böhm
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable delivery external gear machine

    • Patent number 10,393,114
    • Issue date Aug 27, 2019
    • Purdue Research Foundation
    • Andrea Vacca
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Internal-gear pump and hydraulic circuit for a motor vehicle drivet...

    • Patent number 10,119,539
    • Issue date Nov 6, 2018
    • GETRAG Getriebe- und Zahnradfabrik Hermann Hagen
    • Mark Schweiher
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable oil pump with improved partitioning section

    • Patent number 9,157,436
    • Issue date Oct 13, 2015
    • Yamada Manufacturing Co., Ltd.
    • Masato Izutsu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil supply apparatus

    • Patent number 8,827,659
    • Issue date Sep 9, 2014
    • Aisin Seiki Kabushiki Kaisha
    • Yoshito Uno
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump with multiple volume streams

    • Patent number 8,485,802
    • Issue date Jul 16, 2013
    • GKN Sinter Metals Holding GmbH
    • Josef Bachmann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Hydraulic machine

    • Patent number 8,444,404
    • Issue date May 21, 2013
    • Sauer-Danfoss ApS
    • Henning Lund Larsen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump device

    • Patent number 8,020,660
    • Issue date Sep 20, 2011
    • Hitachi, Ltd.
    • Masakazu Kurata
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Oil supplying apparatus for engine

    • Patent number 7,810,467
    • Issue date Oct 12, 2010
    • Aisin Seiki Kabushiki Kaisha
    • Hisashi Ono
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil supplying apparatus for engine

    • Patent number 7,588,011
    • Issue date Sep 15, 2009
    • Aisin Seiki Kabushiki Kaisha
    • Hisashi Ono
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil supply system for engine

    • Patent number 7,011,069
    • Issue date Mar 14, 2006
    • Aisin Seiki Kabushiki Kaisha
    • Hisashi Ono
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Functionalties of axially movable spool valve

    • Patent number 6,832,903
    • Issue date Dec 21, 2004
    • Sauer-Danfoss ApS
    • Hans Christian Petersen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil pump apparatus

    • Patent number 6,544,013
    • Issue date Apr 8, 2003
    • Aisin Seiki Kabushiki Kaisha
    • Hiroshi Kato
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil pump apparatus

    • Patent number 6,168,391
    • Issue date Jan 2, 2001
    • Aisin Seiki Kabushiki Kaisha
    • Hisashi Ono
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable capacity pump

    • Patent number 6,086,337
    • Issue date Jul 11, 2000
    • Unisia Jecs Corporation
    • Yasushi Watanabe
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve train with suction-controlled ring gear/internal gear pump

    • Patent number 5,842,449
    • Issue date Dec 1, 1998
    • Hermann Harle
    • Siegfried A. Eisenmann
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Variable capacity pump having a pressure responsive relief valve ar...

    • Patent number 5,797,732
    • Issue date Aug 25, 1998
    • Unisia Jecs Corporation
    • Yasushi Watanabe
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil pump apparatus

    • Patent number 5,759,013
    • Issue date Jun 2, 1998
    • Aisin Seiki Kabushiki Kaisha
    • Hisashi Miyazaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Internal gear pump

    • Patent number 5,738,501
    • Issue date Apr 14, 1998
    • Mr. Hermann Harle
    • Siegfried Eisenmann
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Oil pump system

    • Patent number 5,547,349
    • Issue date Aug 20, 1996
    • Aisin Seiki Kabushiki Kaisha
    • Ichiro Kimura
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Multistage gear pump and control valve arrangement

    • Patent number 4,502,845
    • Issue date Mar 5, 1985
    • General Motors Corporation
    • Howard E. Chana
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Helical gear machine with regulated outlet

    • Patent number 4,348,865
    • Issue date Sep 14, 1982
    • AB Bonnierforetagen
    • Berth U. Gustafsson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary pump

    • Patent number 4,233,003
    • Issue date Nov 11, 1980
    • Wang-Shing Jeng
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable capacity type gear pump

    • Patent number 4,022,551
    • Issue date May 10, 1977
    • Aikoh Co., Ltd.
    • Shingo Hirosawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3796519

    • Patent number 3,796,519
    • Issue date Mar 12, 1974
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3627455

    • Patent number 3,627,455
    • Issue date Dec 14, 1971
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3391609

    • Patent number 3,391,609
    • Issue date Jul 9, 1968
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3026810

    • Patent number 3,026,810
    • Issue date Mar 27, 1962
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    SLIDING-POCKET VARIABLE-DISPLACEMENT PUMP WITH COMPENSATION CHAMBERS

    • Publication number 20240003346
    • Publication date Jan 4, 2024
    • FORD GLOBAL TECHNOLOGIES, L.L.C.
    • Dengfu Zhang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    METHOD FOR DETERMINING A DISCHARGE PRESSURE OF A ROLLING PISTON COM...

    • Publication number 20230383741
    • Publication date Nov 30, 2023
    • Haier US Appliance Solutions, Inc.
    • Joseph Wilson Latham
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROTARY COMPRESSOR

    • Publication number 20230137362
    • Publication date May 4, 2023
    • LG ELECTRONICS INC.
    • Yongkyu CHOI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMP BODY ASSEMBLY, COMPRESSOR AND AIR CONDITIONER

    • Publication number 20210199113
    • Publication date Jul 1, 2021
    • GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    • Huijun WEI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Internal-Gear Pump and Hydraulic Circuit for a Motor Vehicle Drivet...

    • Publication number 20150086403
    • Publication date Mar 26, 2015
    • GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG
    • Mark Schweiher
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL PUMP

    • Publication number 20140023539
    • Publication date Jan 23, 2014
    • Masato Izutsu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL SUPPLY APPARATUS

    • Publication number 20130209237
    • Publication date Aug 15, 2013
    • AISIN SEIKI KABUSHIKI KAISHA
    • Yoshito Uno
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Oil Pump

    • Publication number 20120213655
    • Publication date Aug 23, 2012
    • Hitachi Automotive Systems, Ltd.
    • Hideaki Ohnishi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    HYDRAULIC MACHINE

    • Publication number 20100150761
    • Publication date Jun 17, 2010
    • Sauer-Danfoss ApS
    • Henning Lund Larsen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL SUPPLYING APPARATUS FOR ENGINE

    • Publication number 20090293834
    • Publication date Dec 3, 2009
    • AISIN SEIKI KABUSHIKI KAISHA
    • Hisashi Ono
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vane Pump with Moveable Sleeve

    • Publication number 20080145260
    • Publication date Jun 19, 2008
    • Milan Sevic
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL SUPPLYING APPARATUS FOR ENGINE

    • Publication number 20080105231
    • Publication date May 8, 2008
    • Aisin Seiki Kabushiki Kaisha
    • Hisashi Ono
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Pump device

    • Publication number 20070062183
    • Publication date Mar 22, 2007
    • Hitachi, Ltd.
    • Masakazu Kurata
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    Double or multiple pump

    • Publication number 20060280636
    • Publication date Dec 14, 2006
    • Josef Bachmann
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Oil supply system for engine

    • Publication number 20050098385
    • Publication date May 12, 2005
    • Aisin Seiki Kabushiki Kaisha
    • Hisashi Ono
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Functionalties of axially movable spool valve

    • Publication number 20040067148
    • Publication date Apr 8, 2004
    • Sauer-Danfoss Holding A/S
    • H. C. Petersen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Oil pump apparatus

    • Publication number 20020037227
    • Publication date Mar 28, 2002
    • Hiroshi Kato
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...