without spring

Patents Grantslast 30 patents

  • Information Patent Grant

    Linear compressor

    • Patent number 11,549,498
    • Issue date Jan 10, 2023
    • LG Electronics Inc.
    • Donghan Kim
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve and fluid control device

    • Patent number 11,041,580
    • Issue date Jun 22, 2021
    • Murata Manufacturing Co., Ltd.
    • Hiroyuki Yokoi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Stacked valve assembly

    • Patent number 10,995,866
    • Issue date May 4, 2021
    • ZAHROOF VALVES INC.
    • Zahroof Mohamed
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve and gas control device

    • Patent number 10,871,156
    • Issue date Dec 22, 2020
    • Murata Manufacturing Co., Ltd.
    • Nobuhira Tanaka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Check valve with improved response time

    • Patent number 10,274,094
    • Issue date Apr 30, 2019
    • Westport Power Inc.
    • Kamal Hatami Aghdam
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valves with valve closing member attached to the actuated counter-s...

    • Patent number 10,253,765
    • Issue date Apr 9, 2019
    • Nuovo Pignone S.p.A.
    • Riccardo Bagagli
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve structure

    • Patent number 8,128,385
    • Issue date Mar 6, 2012
    • Aisin Seiki Kabushiki Kaisha
    • Yukihiko Takemi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Springless compressor valve

    • Patent number 7,819,131
    • Issue date Oct 26, 2010
    • Cameron International Corporation
    • James J. Walpole
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Springless compressor valve

    • Patent number 7,533,692
    • Issue date May 19, 2009
    • Cameron International Corporation
    • James J. Walpole
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi-stage piston type compressor

    • Patent number 7,351,044
    • Issue date Apr 1, 2008
    • Continental AG
    • Iwan Antufjew
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve for hermetic compressor

    • Patent number 6,767,195
    • Issue date Jul 27, 2004
    • Samsung Gwangju Electronics Co., LTD
    • Sung-tae Lee
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Discharge valve of a hermetic compressor using stopper and weight d...

    • Patent number 6,712,591
    • Issue date Mar 30, 2004
    • Samsung Gwangju Electronics Co., LTD
    • Sung-tae Lee
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve mount for a compressor pressure valve

    • Patent number 4,249,564
    • Issue date Feb 10, 1981
    • WABCO Westinghouse GmbH
    • Hans-Dieter Gelse
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3457948

    • Patent number 3,457,948
    • Issue date Jul 29, 1969
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3094140

    • Patent number 3,094,140
    • Issue date Jun 18, 1963
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2981462

    • Patent number 2,981,462
    • Issue date Apr 25, 1961
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    1454207

    • Patent number 1,454,207
    • Issue date May 8, 1923
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    1451033

    • Patent number 1,451,033
    • Issue date Apr 10, 1923
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    1414463

    • Patent number 1,414,463
    • Issue date May 2, 1922
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    VALVES WITH VALVE CLOSING MEMBER ATTACHED TO THE ACTUATED COUNTER-S...

    • Publication number 20130160641
    • Publication date Jun 27, 2013
    • Nuovo Pignone S.p.A.
    • Riccardo BAGAGLI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VALVE STRUCTURE

    • Publication number 20090289210
    • Publication date Nov 26, 2009
    • AISIN SEIKI KABUSHIKI KAISHA
    • Yukihiko Takemi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SPRINGLESS COMPRESSOR VALVE

    • Publication number 20080223459
    • Publication date Sep 18, 2008
    • Cameron International Corporation
    • James J. Walpole
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Springless compressor valve

    • Publication number 20060180208
    • Publication date Aug 17, 2006
    • Cooper Cameron Corporation;
    • James J. Walpole
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Multip-stage piston type compressor

    • Publication number 20060104844
    • Publication date May 18, 2006
    • Iwan Antufjew
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Valve for hermetic compressor

    • Publication number 20030223895
    • Publication date Dec 4, 2003
    • Samsung Gwangju Electronics Co., Ltd
    • Sung-Tae Lee
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Discharge valve of a hermetic compressor

    • Publication number 20030095882
    • Publication date May 22, 2003
    • Sung-Tae Lee
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...