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the pistons having different cross-sections

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  • CPC
  • F04B11/0083
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FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS F04B11/00Equalisation of pulses

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F04B11/0083the pistons having different cross-sections
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Patents Grantslast 30 patents

  • Information Patent Grant

    Piston pump with at least one piston element
    • Patent number 8,118,573
    • Issue date Feb 21, 2012
    • Robert Bosch GmbH
    • Norbert Alaze
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Liquid chromatograph device
    • Patent number 7,921,696
    • Issue date Apr 12, 2011
    • Hitachi High-Technologies Corporation
    • Kunihiko Takao
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Piston vibratory pump
    • Patent number 7,354,255
    • Issue date Apr 8, 2008
    • Grigori Lishanski
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Liquid feeding system
    • Patent number 7,350,401
    • Issue date Apr 1, 2008
    • Hitachi High-Technologies Corporation
    • Kunihiko Takao
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump for liquid chromatography
    • Patent number 7,063,785
    • Issue date Jun 20, 2006
    • Hitachi High-Technologies Corporation
    • Kenji Hiraku
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Liquid chromatograph pump with dual cylinders and dual plungers
    • Patent number 7,063,513
    • Issue date Jun 20, 2006
    • Hitachi High-Technologies Corporation
    • Kenji Hiraku
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    High pressure reciprocating pump and control of the same
    • Patent number 7,037,081
    • Issue date May 2, 2006
    • Teledyne Isco, Inc.
    • Robert W. Allington
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    High pressure reciprocating pump and control of the same
    • Patent number 6,997,683
    • Issue date Feb 14, 2006
    • Teledyne Isco, Inc.
    • Robert W. Allington
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Liquid chromatograph pump and control method therefor
    • Patent number 6,923,916
    • Issue date Aug 2, 2005
    • Hitachi High-Technologies Corporation
    • Kenji Hiraku
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Double-acting, two-stage pump
    • Patent number 6,530,761
    • Issue date Mar 11, 2003
    • Air Products and Chemicals, Inc.
    • David Jonathan Chalk
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Ball screw driven pump
    • Patent number 6,510,780
    • Issue date Jan 28, 2003
    • Lomaxmain Limited
    • Bruce Eden
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Low pulsation displacement pump
    • Patent number 4,913,624
    • Issue date Apr 3, 1990
    • Hitachi, Ltd.
    • Kiwao Seki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Feed pump for brake systems
    • Patent number 4,887,870
    • Issue date Dec 19, 1989
    • Robert Bosch GmbH
    • Heinz Siegel
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Low pulsation pump device
    • Patent number 4,810,168
    • Issue date Mar 7, 1989
    • Hitachi, Ltd.
    • Taro Nogami
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Constant flow rate liquid pumping system
    • Patent number 4,643,651
    • Issue date Feb 17, 1987
    • Groupe Industriel de Realisation et d'Application Gira S.A.
    • Francois Couillard
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Catalyst slave pump
    • Patent number 4,509,903
    • Issue date Apr 9, 1985
    • Jerry R. Fram
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary shaft driven reverse osmosis method and apparatus
    • Patent number 4,288,326
    • Issue date Sep 8, 1981
    • Bowie G. Keefer
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Reverse osmosis method and apparatus
    • Patent number 4,187,173
    • Issue date Feb 5, 1980
    • Bowie G. Keefer
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Continuously operating piston pump
    • Patent number 3,999,896
    • Issue date Dec 28, 1976
    • Martin Sebastiani
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    3713755
    • Patent number 3,713,755
    • Issue date Jan 30, 1973
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2837898
    • Patent number 2,837,898
    • Issue date Jun 10, 1958
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents