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the piston being free-floating

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  • CPC
  • F04B53/122
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FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00

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F04B53/122the piston being free-floating
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mechanically actuated travelling plug valve
    • Patent number 11,454,234
    • Issue date Sep 27, 2022
    • Amnon M. Vadasz Fekete
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Piston pump and seal ring
    • Patent number 11,015,595
    • Issue date May 25, 2021
    • Graco Minnesota Inc.
    • Xuishui Wu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Double acting refrigeration compressor
    • Patent number 9,777,717
    • Issue date Oct 3, 2017
    • Inficon GmbH
    • Werner Schmidt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valveless reciprocating compressor
    • Patent number 9,435,322
    • Issue date Sep 6, 2016
    • GE Oil & Gas Compression Systems, LLC
    • Karthik Ramakumar
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Lishanski's vibratory cavitation pump
    • Patent number 9,062,664
    • Issue date Jun 23, 2015
    • Grigori Lishanski
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Methods and apparatuses for joining a pumping cartridge to a pump d...
    • Patent number 8,851,866
    • Issue date Oct 7, 2014
    • HydroCision, Inc.
    • Timothy E. Moutafis
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Plunger pump with atmospheric bellows
    • Patent number 8,632,322
    • Issue date Jan 21, 2014
    • Ingersoll-Rand Company
    • Stephen D. Able
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vibratory cavitation pump lishanski
    • Patent number 8,353,689
    • Issue date Jan 15, 2013
    • Grigori Lishanski
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    High pressure pumping cartridges for medical and surgical pumping a...
    • Patent number 7,717,685
    • Issue date May 18, 2010
    • HydroCision, Inc.
    • Timothy E. Moutafis
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Methods and apparatuses for joining a pumping cartridge to a pump d...
    • Patent number 7,337,538
    • Issue date Mar 4, 2008
    • HydroCision, Inc.
    • Timothy E. Moutafis
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump system for delivering cryogenic liquids
    • Patent number 6,722,866
    • Issue date Apr 20, 2004
    • Linde AG
    • Helmut Dresler
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Piston pump
    • Patent number 6,499,974
    • Issue date Dec 31, 2002
    • Holger Clasen KG (GmbH & Co.)
    • Björn Bach
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil transfer pump
    • Patent number 6,394,772
    • Issue date May 28, 2002
    • Bent Johan Larsen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump system and method for pumping well fluids
    • Patent number 5,934,372
    • Issue date Aug 10, 1999
    • Muth Pump LLC
    • Garold M. Muth
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tubing pump system for pumping well fluids
    • Patent number 5,765,639
    • Issue date Jun 16, 1998
    • Muth Pump LLC
    • Garold M. Muth
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    High viscosity material pump having valved priming piston
    • Patent number 5,605,446
    • Issue date Feb 25, 1997
    • Graco Inc.
    • James J. Handzel
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump
    • Patent number 5,577,896
    • Issue date Nov 26, 1996
    • Nippondenso Co., Ltd.
    • Tomoo Harada
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Parallel tubing system for pumping well fluids
    • Patent number 5,505,258
    • Issue date Apr 9, 1996
    • Muth Pump LLC
    • Garold M. Muth
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    "V" shaped check stop
    • Patent number 5,477,880
    • Issue date Dec 26, 1995
    • The ARO Corporation
    • Raymond D. Carter
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Subsurface pump with pump rod connected valve ball
    • Patent number 5,407,333
    • Issue date Apr 18, 1995
    • Charles T. Lambright
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Traveling valve for sucker rod pump
    • Patent number 5,356,114
    • Issue date Oct 18, 1994
    • Mash Oil Tools, Inc.
    • Kenneth R. Havard
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic piston pumps equipped with suction valve
    • Patent number 5,354,181
    • Issue date Oct 11, 1994
    • Hydro Rene Leduc
    • Louis-Claude Porel
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Positive displacement pump with pivot piston valve
    • Patent number 5,292,236
    • Issue date Mar 8, 1994
    • Serac France
    • Andre Graffin
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Saturated fluid pumping apparatus
    • Patent number 5,188,519
    • Issue date Feb 23, 1993
    • CVI Incorporated
    • Ivars S. Spulgis
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Priming piston pump piston check valve
    • Patent number 5,147,188
    • Issue date Sep 15, 1992
    • Graco Inc.
    • Thomas J. Shaefer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Plunger with composite retention valve
    • Patent number 4,740,141
    • Issue date Apr 26, 1988
    • Intevep, S.A.
    • Amnon V. Fekete
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Plunger with simple retention valve
    • Patent number 4,708,597
    • Issue date Nov 24, 1987
    • Intevep, S.A.
    • Amnon V. Fekete
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Travelling valve assembly for a fluid pump
    • Patent number 4,599,054
    • Issue date Jul 8, 1986
    • Harry L. Spears
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Piston with composite retention valve
    • Patent number 4,591,315
    • Issue date May 27, 1986
    • Amnon M. Vadasz Fekete
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Piston with simple retention valve
    • Patent number 4,591,316
    • Issue date May 27, 1986
    • Amnon M. Vadasz Fekete
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents