Valve heads

Patents Grantslast 30 patents

  • Information Patent Grant

    Tunable fluid end

    • Patent number 8,746,654
    • Issue date Jun 10, 2014
    • Dennis W. Gilstad
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Tunable fluid end

    • Patent number 8,720,857
    • Issue date May 13, 2014
    • Dennis W. Gilstad
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Tunable valve assembly

    • Patent number 8,496,224
    • Issue date Jul 30, 2013
    • Dennis W. Gilstad
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Symmetrical valve configuration

    • Patent number 6,886,586
    • Issue date May 3, 2005
    • Mueller International Inc.
    • Leo W. Fleury, Jr.
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Variable force actuator with a double needle poppet assembly

    • Patent number 6,871,668
    • Issue date Mar 29, 2005
    • Delphi Technologies Inc.
    • Alejandro Moreno
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Armature for a solenoid operated valve

    • Patent number 4,967,786
    • Issue date Nov 6, 1990
    • Emhart Industries, Inc.
    • Michael R. DuHack
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Armature for a solenoid operated valve

    • Patent number 4,936,337
    • Issue date Jun 26, 1990
    • Emhart Industries, Inc.
    • Michael R. DuHack
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Dual float valve control for regular and douglas type valve

    • Patent number 4,872,473
    • Issue date Oct 10, 1989
    • Michael Agostino
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Valve assembly for reciprocating plunger pump

    • Patent number 4,716,924
    • Issue date Jan 5, 1988
    • Partek Corporation of Houston
    • Amos Pacht
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve with rotary valve head

    • Patent number 4,641,682
    • Issue date Feb 10, 1987
    • Baker Oil Tools, Inc.
    • Gary L. Harris
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve

    • Patent number 4,545,399
    • Issue date Oct 8, 1985
    • Charles M. McGhee
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    High pressure valve for positive pressure pumps including means for...

    • Patent number 4,520,842
    • Issue date Jun 4, 1985
    • Robert E. Elliott
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Compressor valve

    • Patent number 4,483,363
    • Issue date Nov 20, 1984
    • Robert D. Madoche
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Valve modification for fluid pump valves

    • Patent number 4,408,629
    • Issue date Oct 11, 1983
    • Conoco Inc.
    • Larry J. Lafont
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valve

    • Patent number 4,337,920
    • Issue date Jul 6, 1982
    • Cameron Iron Works, Inc.
    • Joe P. Parris
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Choke for controlling the flow of drilling mud

    • Patent number 4,257,442
    • Issue date Mar 24, 1981
    • Jack R. Claycomb
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Choke for controlling the flow of drilling mud

    • Patent number 4,190,073
    • Issue date Feb 26, 1980
    • Jack R. Claycomb
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3467133

    • Patent number 3,467,133
    • Issue date Sep 16, 1969
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3454036

    • Patent number 3,454,036
    • Issue date Jul 8, 1969
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3334649

    • Patent number 3,334,649
    • Issue date Aug 8, 1967
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3267953

    • Patent number 3,267,953
    • Issue date Aug 23, 1966
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3194534

    • Patent number 3,194,534
    • Issue date Jul 13, 1965
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3099286

    • Patent number 3,099,286
    • Issue date Jul 30, 1963
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3022797

    • Patent number 3,022,797
    • Issue date Feb 27, 1962
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    2983385

    • Patent number 2,983,385
    • Issue date May 9, 1961
    • B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
  • Information Patent Grant

    2935995

    • Patent number 2,935,995
    • Issue date May 10, 1960
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2904060

    • Patent number 2,904,060
    • Issue date Sep 15, 1959
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2646066

    • Patent number 2,646,066
    • Issue date Jul 21, 1953
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    2596787

    • Patent number 2,596,787
    • Issue date May 13, 1952
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    2314653

    • Patent number 2,314,653
    • Issue date Mar 23, 1943
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Tunable Fluid End

    • Publication number 20140034862
    • Publication date Feb 6, 2014
    • Dennis W. Gilstad
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Tunable Fluid End

    • Publication number 20140034863
    • Publication date Feb 6, 2014
    • Dennis W. Gilstad
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Symmetrical valve configuration

    • Publication number 20040250854
    • Publication date Dec 16, 2004
    • Leo W. Fleury
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Variable force actuator with a double needle poppet assembly

    • Publication number 20040134547
    • Publication date Jul 15, 2004
    • Alejandro Moreno
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...