Conical valve means

Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic pump port plate with variable area metering notch

    • Patent number 10,227,964
    • Issue date Mar 12, 2019
    • Caterpillar Inc.
    • Kevin J. Graf
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    1970133

    • Patent number 1,970,133
    • Issue date Aug 14, 1934
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    1925378

    • Patent number 1,925,378
    • Issue date Sep 5, 1933
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    1871816

    • Patent number 1,871,816
    • Issue date Aug 16, 1932
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    1785356

    • Patent number 1,785,356
    • Issue date Dec 16, 1930
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...