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the inner and outer member being in contact along more than one line or surface

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  • CPC
  • F04C18/3446
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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 F04C18/00Rotary-piston pumps specially adapted for elastic fluids

Current Industry

F04C18/3446the inner and outer member being in contact along more than one line or surface
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Vane pump
    • Patent number 11,873,815
    • Issue date Jan 16, 2024
    • HELLA GMBH & CO. KGAA
    • Sascha Bruemmer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary compressor with unequally spaced vane slots
    • Patent number 11,732,584
    • Issue date Aug 22, 2023
    • LG Electronics Inc.
    • Jonghun Lee
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane compressor with an improved lubrication system
    • Patent number 11,713,759
    • Issue date Aug 1, 2023
    • ING. ENEA MATTEI S.P.A.
    • Giulio Contaldi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane cell pump
    • Patent number 11,603,838
    • Issue date Mar 14, 2023
    • Schwabische Huttenwerke Automotive GmbH
    • Uwe Meinig
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Oil supply to the back pressure groove of a vane pump
    • Patent number 11,519,270
    • Issue date Dec 6, 2022
    • Gree Electric Appliances, Inc. of Zhuhai
    • Jia Xu
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Compressor pump body, compressor, and air conditioner with a vane e...
    • Patent number 11,408,287
    • Issue date Aug 9, 2022
    • Gree Electric Appliances, Inc. of Zhuhai
    • Pengkai Wan
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Backpressure passage rotary compressor
    • Patent number 11,346,221
    • Issue date May 31, 2022
    • LG Electronics Inc.
    • Seokhwan Moon
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Vane gas pump with sliding element trmporaily completely covering t...
    • Patent number 11,261,868
    • Issue date Mar 1, 2022
    • Pierburg Pump Technology GmbH
    • Steffen Schnurr
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane for a vane cell pump and vane cell pump
    • Patent number 10,087,930
    • Issue date Oct 2, 2018
    • Joma-Polytec GmbH
    • Hans-Peter Ott
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Electric pump
    • Patent number 10,066,626
    • Issue date Sep 4, 2018
    • Mikuni Corporation
    • Shingo Tabata
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane pump
    • Patent number 9,765,775
    • Issue date Sep 19, 2017
    • Hella KGaA Hueck & Co.
    • Ingo Geue
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane-rotary gas compressor
    • Patent number 9,765,783
    • Issue date Sep 19, 2017
    • Calsonic Kansei Corporation
    • Eiki Yanagawa
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Electric pump
    • Patent number 9,726,174
    • Issue date Aug 8, 2017
    • Mikuni Corporation
    • Shingo Tabata
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Vane with offset walls and fluid passages used in a vane cell device
    • Patent number 9,650,894
    • Issue date May 16, 2017
    • Saeta GmbH & Co. KG
    • Eggert Bülk
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Gas compressor formed with a high-pressure supply hole
    • Patent number 9,556,872
    • Issue date Jan 31, 2017
    • Calsonic Kansei Corporation
    • Keisuke Nakazawa
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Variable displacement pump with double eccentric ring and displacem...
    • Patent number 9,404,495
    • Issue date Aug 2, 2016
    • VHIT S.p.A.
    • Leonardo Cadeddu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gas compressor for reducing oscillation in a housing thereof
    • Patent number 9,316,226
    • Issue date Apr 19, 2016
    • Calsonic Kansei Corporation
    • Yasufumi Ishibashi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane pump apparatus and method
    • Patent number 9,212,660
    • Issue date Dec 15, 2015
    • Hella KGaA Hueck & Co.
    • Theodor Hüser
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rotary vane compressor
    • Patent number 9,033,675
    • Issue date May 19, 2015
    • Calsonic Kansei Corporation
    • Hirotada Shimaguchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Stop mechanism for vane compressor
    • Patent number 8,985,963
    • Issue date Mar 24, 2015
    • Calsonic Kansei Corporation
    • Junichirou Terazawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor
    • Patent number 8,956,132
    • Issue date Feb 17, 2015
    • Calsonic Kansei Corporation
    • Keita Satou
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Electrically driven gas compressor
    • Patent number 8,944,781
    • Issue date Feb 3, 2015
    • Calsonic Kansei Corporation
    • Hirotada Shimaguchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary vane pumps with asymmetrical chamber cavities
    • Patent number 8,936,451
    • Issue date Jan 20, 2015
    • Gast Manufacturing, Inc., a Unit of IDEX Corporation
    • Christopher Lee Blackburn
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Seal for a rotary vane pump
    • Patent number 8,342,828
    • Issue date Jan 1, 2013
    • Rapco, Inc.
    • John L. Wicht
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane compressor with improved vanes
    • Patent number 8,257,072
    • Issue date Sep 4, 2012
    • Calsonic Kansei Corporation
    • Hirotada Shimaguchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary sliding vane compressor with a secondary compressed fluid inlet
    • Patent number 8,123,506
    • Issue date Feb 28, 2012
    • FLSMIDTH A/S
    • Louis S. Schwartz
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gas compressor
    • Patent number 7,563,081
    • Issue date Jul 21, 2009
    • Calsonic Compressor Inc.
    • Seiichiro Yoda
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method of coating a fluorocarbon resin
    • Patent number 7,175,887
    • Issue date Feb 13, 2007
    • Calsonic Compressors Manufacturing Inc.
    • Toru Takahashi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Disturbance estimated type control system, gas compressor control s...
    • Patent number 7,142,930
    • Issue date Nov 28, 2006
    • Calsonic Compressor Manufacturing Inc.
    • Akira Shimada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Refrigerant compressor and friction control process therefor
    • Patent number 7,134,381
    • Issue date Nov 14, 2006
    • Nissan Motor Co., Ltd.
    • Takafumi Ueno
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    PUMP FOR EVAPORATIVE EMISSIONS SYSTEM
    • Publication number 20220403801
    • Publication date Dec 22, 2022
    • Stoneridge Control Devices, Inc
    • Robert James Steinman
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    VANE PUMP
    • Publication number 20220196014
    • Publication date Jun 23, 2022
    • HELLA GmbH & Co. KGaA
    • Sascha BRUEMMER
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    COMPRESSOR PUMP BODY, COMPRESSOR, AND AIR CONDITIONER
    • Publication number 20210231123
    • Publication date Jul 29, 2021
    • GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    • Pengkai WAN
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    COMPRESSOR
    • Publication number 20200248689
    • Publication date Aug 6, 2020
    • KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    • Jun KONDO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VANE GAS PUMP
    • Publication number 20190345943
    • Publication date Nov 14, 2019
    • PIERBURG PUMP TECHNOLOGY GMBH
    • STEFFEN SCHNURR
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL-LUBRICATED ROTARY VANE VACUUM PUMP
    • Publication number 20190257310
    • Publication date Aug 22, 2019
    • Gebr. Becker GmbH
    • Artjom KRAFT
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLUID COMPRESSOR
    • Publication number 20180195511
    • Publication date Jul 12, 2018
    • Bristol Compressors International, LLC
    • Kevin Mumpower
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP MECHANISM
    • Publication number 20160201676
    • Publication date Jul 14, 2016
    • Mikuni Corporation
    • Shoichi ISHIGUCHI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Clubhead Vane Pump With Balanced Vanes
    • Publication number 20140271310
    • Publication date Sep 18, 2014
    • WOODWARD, INC.
    • Terry Whitesel
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vane for a Vane Cell Device, as Well as a Vane Cell Device
    • Publication number 20140219853
    • Publication date Aug 7, 2014
    • SAETA GMBH & CO. KG
    • Eggert Bülk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VANE ROTARY TYPE GAS COMPRESSOR
    • Publication number 20130315771
    • Publication date Nov 28, 2013
    • CALSONIC KANSEI CORPORATION
    • Koichi SHIMADA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROTARY VANE PUMPS WITH ASYMMETRICAL CHAMBER CAVITIES
    • Publication number 20130177466
    • Publication date Jul 11, 2013
    • GAST MANUFACTURING, INC., A Unit of IDEX Corporation
    • Christopher Lee Blackburn
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SYMMETRICAL VANE PUMP APPARATUS AND METHOD
    • Publication number 20130058808
    • Publication date Mar 7, 2013
    • Hella KGaA
    • Theodor Hüser
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VANE PUMP APPARATUS AND METHOD
    • Publication number 20130052057
    • Publication date Feb 28, 2013
    • Hella KGaA
    • Theodor Hüser
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ELECTRICALLY DRIVEN GAS COMPRESSOR
    • Publication number 20130011281
    • Publication date Jan 10, 2013
    • CALSONIC KANSEI CORPORATION
    • Hirotada Shimaguchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR
    • Publication number 20120301343
    • Publication date Nov 29, 2012
    • Keita SATOU
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VANE COMPRESSOR
    • Publication number 20120269670
    • Publication date Oct 25, 2012
    • CALSONIC KANSEI CORPORATION
    • Junichirou Terazawa
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    ROTARY VANE COMPRESSOR
    • Publication number 20120224986
    • Publication date Sep 6, 2012
    • CALSONIC KANSEI CORPORATION
    • Hirotada Shimaguchi
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    GAS COMPRESSOR
    • Publication number 20110223052
    • Publication date Sep 15, 2011
    • Calsonic Kansel Corporation
    • Hiroshi Iijima
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SEAL FOR A ROTARY VANE PUMP
    • Publication number 20100034685
    • Publication date Feb 11, 2010
    • RAPCO, INC.
    • John L. Wicht
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Rotary sliding vane compressor
    • Publication number 20090297340
    • Publication date Dec 3, 2009
    • Louis S. Schwartz
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ELECTRIC COMPRESSOR
    • Publication number 20090269220
    • Publication date Oct 29, 2009
    • CALSONIC KANSEI CORPORATION
    • Masahiro Nakagawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VANE-TYPE COMPRESSOR
    • Publication number 20090162234
    • Publication date Jun 25, 2009
    • KALSONIC KANSEI CORPORATION
    • Hirotada SHIMAGUCHI
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Fastener member and gas compressor using the same
    • Publication number 20080232993
    • Publication date Sep 25, 2008
    • Masahiro Tsuda
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Gas compressor
    • Publication number 20050287019
    • Publication date Dec 29, 2005
    • CALSONIC COMPRESSOR INC.
    • Seiichiro Yoda
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Refrigerant compressor and friction control process therefor
    • Publication number 20050084390
    • Publication date Apr 21, 2005
    • NISSAN MOTOR CO., LTD.
    • Takafumi Ueno
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Application

    Rotary fluid machinery
    • Publication number 20050063855
    • Publication date Mar 24, 2005
    • Hiroyuki Niikura
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Rotary fluid machine
    • Publication number 20050031479
    • Publication date Feb 10, 2005
    • Tsutomu Takahashi
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Vane pump
    • Publication number 20040202565
    • Publication date Oct 14, 2004
    • TOYODA KOKI KABUSHIKI KAISHA
    • Hiroyuki Yao
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Pump with sealed drive area
    • Publication number 20040197206
    • Publication date Oct 7, 2004
    • Timothy H. Henderson
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES