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Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement

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  • CPC
  • F04C18/088
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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

F04C18/088Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Slide valve for a twin-screw compressor
    • Patent number 11,913,453
    • Issue date Feb 27, 2024
    • Johnson Controls Tyco IP Holdings LLP
    • Shengmei Yang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Complex screw rotors
    • Patent number 11,644,034
    • Issue date May 9, 2023
    • GARDNER DENVER, INC.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Opposed screw compressor having non-interference system
    • Patent number 11,149,732
    • Issue date Oct 19, 2021
    • Carrier Corporation
    • Masao Akei
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Complex screw rotors
    • Patent number 10,975,867
    • Issue date Apr 13, 2021
    • GARDNER DENVER, INC.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil-injected vacuum pump element
    • Patent number 10,670,014
    • Issue date Jun 2, 2020
    • Atlas Copco Airpower, naamloze vennootschap
    • Jens Boeckx
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Silent gear pump or motor suppressing troubles of trapping fluid
    • Patent number 9,945,230
    • Issue date Apr 17, 2018
    • Nag-Bok Lim
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Gear pump bearing dam
    • Patent number 9,932,980
    • Issue date Apr 3, 2018
    • Woodward, Inc.
    • Adam F. Czerwonka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Optimized helix angle rotors for roots-style supercharger
    • Patent number 9,822,781
    • Issue date Nov 21, 2017
    • Eaton Corporation
    • Matthew G. Swartzlander
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gear pump bearing dam
    • Patent number 9,303,644
    • Issue date Apr 5, 2016
    • Woodward, Inc.
    • Adam F. Czerwonka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor having optimized cylinder oil circulation rate of...
    • Patent number 8,118,577
    • Issue date Feb 21, 2012
    • Mitsubishi Heavy Industries, Ltd.
    • Yoshiyuki Kimata
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor including separation tube engagement mechanism
    • Patent number 7,736,136
    • Issue date Jun 15, 2010
    • Sanden Corporation
    • Shinichi Ohtake
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor with dual pathways for returning lubricating oil
    • Patent number 7,731,486
    • Issue date Jun 8, 2010
    • Sanden Corporation
    • Hiroyuki Yokoyama
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Ductile cast iron scroll compressor
    • Patent number 7,431,576
    • Issue date Oct 7, 2008
    • Scroll Technologies
    • Zili Sun
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor with bypass holes communicating with an intake ch...
    • Patent number 7,344,365
    • Issue date Mar 18, 2008
    • Mitsubishi Heavy Industries, Ltd.
    • Makoto Takeuchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll type hydraulic machine
    • Patent number 7,214,043
    • Issue date May 8, 2007
    • Sanden Corporation
    • Kou Tsukamoto
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll air supply apparatus having a motor shaft and a mechanism shaft
    • Patent number 6,887,051
    • Issue date May 3, 2005
    • Matsushita Electric Industrial Co., Ltd.
    • Atsushi Sakuda
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor having step portions for reducing leakage of fluid
    • Patent number 6,527,531
    • Issue date Mar 4, 2003
    • Mitsubishi Heavy Industries, Ltd.
    • Katsuhiro Fujita
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw fluid machine and screw gear used in the same
    • Patent number 5,836,754
    • Issue date Nov 17, 1998
    • Diavac Limited
    • Masayuki Ozaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw fluid machine and screw gear used in the same
    • Patent number 5,829,957
    • Issue date Nov 3, 1998
    • Diavac Limited
    • Masayuki Ozaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw fluid machine and screw gear used in the same
    • Patent number 5,674,063
    • Issue date Oct 7, 1997
    • Diavac Limited
    • Masayuki Ozaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Trapped volume vent means for meshing lobes of roots-type supercharger
    • Patent number 5,131,829
    • Issue date Jul 21, 1992
    • Eaton Corporation
    • Keith Hampton
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Mechanical pumps
    • Patent number 5,055,017
    • Issue date Oct 8, 1991
    • The BOC Group plc
    • Henryk Wycliffe
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Supercharger carry-over venting means
    • Patent number 4,569,646
    • Issue date Feb 11, 1986
    • Eaton Corporation
    • Raymond A. Soeters
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw compressor
    • Patent number 4,560,333
    • Issue date Dec 24, 1985
    • Hitachi, Ltd.
    • Mitsuru Fujiwara
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Supercharger carryback pulsation damping means
    • Patent number 4,556,373
    • Issue date Dec 3, 1985
    • Eaton Corporation
    • Raymond A. Soeters
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3844695
    • Patent number 3,844,695
    • Issue date Oct 29, 1974
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2578196
    • Patent number 2,578,196
    • Issue date Dec 11, 1951
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    COMPLEX SCREW ROTORS
    • Publication number 20230272797
    • Publication date Aug 31, 2023
    • Gardner Denver, Inc.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPLEX SCREW ROTORS
    • Publication number 20210231122
    • Publication date Jul 29, 2021
    • GARDNER DENVER, INC.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    A Slide Valve for a Twin-Screw Compressor
    • Publication number 20200291942
    • Publication date Sep 17, 2020
    • Johnson Controls Technology Company
    • Shengmei Yang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OPPOSED SCREW COMPRESSOR HAVING NON-INTERFERENCE SYSTEM
    • Publication number 20190128260
    • Publication date May 2, 2019
    • Carrier Corporation
    • Masao Akei
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL-INJECTED VACUUM PUMP ELEMENT
    • Publication number 20180274541
    • Publication date Sep 27, 2018
    • ATLAS COPCO AIRPOWER, naamloze vennootschap
    • Jens BOECKX
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPLEX SCREW ROTORS
    • Publication number 20180258934
    • Publication date Sep 13, 2018
    • GARDNER DENVER, INC.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    METALLIC INSERT WITH SMOOTH CONTOURS FOR USE WITH COMPOSITE WORKING...
    • Publication number 20160230813
    • Publication date Aug 11, 2016
    • GM GLOBAL TECHNOLOGY OPERATIONS LLC
    • Leonard Barry Griffiths
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCROLL COMPRESSOR
    • Publication number 20100074784
    • Publication date Mar 25, 2010
    • Yoshiyuki Kimata
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Rotary blower with isothermal air jacket
    • Publication number 20090191083
    • Publication date Jul 30, 2009
    • Paul Xiubao Huang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Compressor
    • Publication number 20090000872
    • Publication date Jan 1, 2009
    • Hiroyuki Yokoyama
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Ductile cast iron scroll compressor
    • Publication number 20070122302
    • Publication date May 31, 2007
    • Scroll Technologies
    • Zili Sun
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    Scroll compressor
    • Publication number 20070065325
    • Publication date Mar 22, 2007
    • Mitsubishi Heavy Industries, Ltd.
    • Makoto Takeuchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Scroll type hydraulic machine
    • Publication number 20050220651
    • Publication date Oct 6, 2005
    • Sanden Corporation
    • Kou Tsukamoto
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Compressor
    • Publication number 20050129536
    • Publication date Jun 16, 2005
    • Shinichi Ohtake
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Gas compressor
    • Publication number 20050084397
    • Publication date Apr 21, 2005
    • DENSO Corporation
    • Hiroshi Okada
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Scroll compressor
    • Publication number 20050053507
    • Publication date Mar 10, 2005
    • Makoto Takeuchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Air supply apparatus
    • Publication number 20030147763
    • Publication date Aug 7, 2003
    • Matsushita Electric Industrial Co., Ltd.
    • Atsushi Sakuda
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Scroll compressor having step portions for reducing leakage of fluid
    • Publication number 20020094291
    • Publication date Jul 18, 2002
    • MITSUBISHI HEAVY INDUSTRIES LTD.
    • Katsuhiro Fujita
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...