With provision of alternate wear parts

Patents Grantslast 30 patents

  • Information Patent Grant

    Erosion resistant wear sleeve for high pressure valves

    • Patent number 6,446,664
    • Issue date Sep 10, 2002
    • Power Chokes, Inc.
    • Michael E. Parsons
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Stuffing box with O-ring detent for control mechanism of emergency...

    • Patent number 4,453,698
    • Issue date Jun 12, 1984
    • Allegheny Valve Company
    • Joseph H. DeFrees
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Non-drip valve apparatus

    • Patent number 4,354,519
    • Issue date Oct 19, 1982
    • Curt A. Bjorklund
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    Pouring of molten metals

    • Patent number 3,970,283
    • Issue date Jul 20, 1976
    • United States Steel Corporation
    • Robert Duncan Hind
    • B22 - CASTING POWDER METALLURGY
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    Check valve

    • Patent number 3,955,592
    • Issue date May 11, 1976
    • Glen B. Guyton
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3779264

    • Patent number 3,779,264
    • Issue date Dec 18, 1973
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    3363878

    • Patent number 3,363,878
    • Issue date Jan 16, 1968
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    3334649

    • Patent number 3,334,649
    • Issue date Aug 8, 1967
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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    3152786

    • Patent number 3,152,786
    • Issue date Oct 13, 1964
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    3118472

    • Patent number 3,118,472
    • Issue date Jan 21, 1964
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    2838059

    • Patent number 2,838,059
    • Issue date Jun 10, 1958
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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    2662554

    • Patent number 2,662,554
    • Issue date Dec 15, 1953
    • E21 - EARTH DRILLING MINING
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    2589012

    • Patent number 2,589,012
    • Issue date Mar 11, 1952
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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    2555461

    • Patent number 2,555,461
    • Issue date Jun 5, 1951
    • A62 - LIFE-SAVING FIRE-FIGHTING
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    2514431

    • Patent number 2,514,431
    • Issue date Jul 11, 1950
    • B24 - GRINDING POLISHING
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    2481214

    • Patent number 2,481,214
    • Issue date Sep 6, 1949
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    2219504

    • Patent number 2,219,504
    • Issue date Oct 29, 1940
    • E21 - EARTH DRILLING MINING
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    2214195

    • Patent number 2,214,195
    • Issue date Sep 10, 1940
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    2091058

    • Patent number 2,091,058
    • Issue date Aug 24, 1937
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    1998074

    • Patent number 1,998,074
    • Issue date Apr 16, 1935
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    1983163

    • Patent number 1,983,163
    • Issue date Dec 4, 1934
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    1982754

    • Patent number 1,982,754
    • Issue date Dec 4, 1934
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    1966007

    • Patent number 1,966,007
    • Issue date Jul 10, 1934
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    1929936

    • Patent number 1,929,936
    • Issue date Oct 10, 1933
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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    1891586

    • Patent number 1,891,586
    • Issue date Dec 20, 1932
    • G05 - CONTROLLING REGULATING
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    1862368

    • Patent number 1,862,368
    • Issue date Jun 7, 1932
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    1854110

    • Patent number 1,854,110
    • Issue date Apr 12, 1932
    • F22 - STEAM GENERATION
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    1736368

    • Patent number 1,736,368
    • Issue date Nov 19, 1929
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    1672394

    • Patent number 1,672,394
    • Issue date Jun 5, 1928
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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    1608178

    • Patent number 1,608,178
    • Issue date Nov 23, 1926
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    VALVES AND RESERVOIRS FOR MICROFLUIDIC SYSTEMS

    • Publication number 20100116343
    • Publication date May 13, 2010
    • President and Fellows of Harvard College
    • Douglas B. Weibel
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL