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by changing the effective cross-section of the working surface of the piston

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  • CPC
  • F04B49/18
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS F04B49/00Control

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F04B49/18by changing the effective cross-section of the working surface of the piston
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Intensity modifiable intensifier pump
    • Patent number 11,353,017
    • Issue date Jun 7, 2022
    • Halliburton Energy Services, Inc.
    • Jim Basuki Surjaatmadja
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Metering mechanism for a proportioning pump, and associated pump an...
    • Patent number 10,975,861
    • Issue date Apr 13, 2021
    • Dosatron International
    • Philippe Duquennoy
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Manual dual-directional inflating device
    • Patent number 10,844,849
    • Issue date Nov 24, 2020
    • Dongguan Tiger Point, Metal & Plastic Products Co., Ltd.
    • Chun-Chung Tsai
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Reciprocating low-speed heavy-load hydraulic pump with variable act...
    • Patent number 10,280,917
    • Issue date May 7, 2019
    • ZHEJIANG HAIJU TECHNOLOGY CO., LTD.
    • Wei Sun
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Piston pump
    • Patent number 10,036,369
    • Issue date Jul 31, 2018
    • Robert Bosch GmbH
    • Oliver Gaertner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Two-stage hand pump
    • Patent number 7,353,746
    • Issue date Apr 8, 2008
    • K-Pump
    • James D. Kutella
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable injection rate high pressure fuel pump
    • Patent number 6,726,459
    • Issue date Apr 27, 2004
    • General Motors Corporation
    • Paul Gottemoller
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Piston pump
    • Patent number 6,146,115
    • Issue date Nov 14, 2000
    • Robert Bosch GmbH
    • Norbert Alaze
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Compression device, particularly for the pressure filling of a cont...
    • Patent number 5,151,015
    • Issue date Sep 29, 1992
    • L'Oreal
    • Daniel Bauer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Dual-rigid-hollow-stem actuators in opposite-phase slurry pump driv...
    • Patent number 4,790,728
    • Issue date Dec 13, 1988
    • Anthony F. Dwyer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Air dryer purge control for turbocharged compressors
    • Patent number 4,714,483
    • Issue date Dec 22, 1987
    • Allied Corporation
    • James P. Koening
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Air compressor with preloaded clutch
    • Patent number 4,648,805
    • Issue date Mar 10, 1987
    • Grau Girling Limited
    • Paul Beaumont
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Air compressor with pre-loaded spring clutch
    • Patent number 4,632,639
    • Issue date Dec 30, 1986
    • Lucas Industries Limited
    • Paul Beaumont
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Variable reciprocating plunger pump
    • Patent number 4,568,249
    • Issue date Feb 4, 1986
    • James W. Todd
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multiple displacement hydraulic pump system with automatic displace...
    • Patent number 4,543,789
    • Issue date Oct 1, 1985
    • Peter Norton
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Two stage manual air pump
    • Patent number 4,508,490
    • Issue date Apr 2, 1985
    • The United States of America as represented by the Secretary of the Navy
    • Joe D. Ramirez
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Free piston engine pump with energy rate smoothing
    • Patent number 4,435,133
    • Issue date Mar 6, 1984
    • Pneumo Corporation
    • John W. Meulendyk
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Mix blending pump
    • Patent number 4,018,545
    • Issue date Apr 19, 1977
    • Omar Knedlik
    • A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
  • Information Patent Grant

    3813995
    • Patent number 3,813,995
    • Issue date Jun 4, 1974
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    3787147
    • Patent number 3,787,147
    • Issue date Jan 22, 1974
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3775027
    • Patent number 3,775,027
    • Issue date Nov 27, 1973
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    3682572
    • Patent number 3,682,572
    • Issue date Aug 8, 1972
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3510231
    • Patent number 3,510,231
    • Issue date May 5, 1970
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    3194174
    • Patent number 3,194,174
    • Issue date Jul 13, 1965
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3112705
    • Patent number 3,112,705
    • Issue date Dec 3, 1963
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    3049082
    • Patent number 3,049,082
    • Issue date Aug 14, 1962
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2945444
    • Patent number 2,945,444
    • Issue date Jul 19, 1960
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2792687
    • Patent number 2,792,687
    • Issue date May 21, 1957
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2766701
    • Patent number 2,766,701
    • Issue date Oct 16, 1956
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2570698
    • Patent number 2,570,698
    • Issue date Oct 9, 1951
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents