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Karl Krieger deceased

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  • late of Wuppertal, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic valve actuating device
    • Patent number 4,852,852
    • Issue date Aug 1, 1989
    • Hermann Henscheidt Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pressure-control valve
    • Patent number 4,782,736
    • Issue date Nov 8, 1988
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method and system for the production of electrical energy by means...
    • Patent number 4,780,638
    • Issue date Oct 25, 1988
    • Werner Reinelt
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Piston stroke digital determination means
    • Patent number 4,769,538
    • Issue date Sep 6, 1988
    • Hermann Hemschedit Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Change-over valve for hydraulic walking mine-roof supports
    • Patent number 4,757,835
    • Issue date Jul 19, 1988
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Werner Reinelt
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Prop control valve
    • Patent number 4,694,730
    • Issue date Sep 22, 1987
    • Hermann Hemschedit Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic valve control apparatus
    • Patent number 4,676,698
    • Issue date Jun 30, 1987
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pressure-limiting valve
    • Patent number 4,660,595
    • Issue date Apr 28, 1987
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Willi Kuster
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulically-controlled non-return valve
    • Patent number 4,597,557
    • Issue date Jul 1, 1986
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Arrangement for controlling an electro-hydraulic valve
    • Patent number 4,557,293
    • Issue date Dec 10, 1985
    • Hermann Hemscheidt Maschinenfabrick GmbH & Co.
    • Guy Guens
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pressure-limiting hydraulic valve
    • Patent number 4,552,172
    • Issue date Nov 12, 1985
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3-Port, 2-position directional control valve
    • Patent number 4,505,299
    • Issue date Mar 19, 1985
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Josef Welzel
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine-roof support control means
    • Patent number 4,476,898
    • Issue date Oct 16, 1984
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine-roof support control mechanism
    • Patent number 4,465,408
    • Issue date Aug 14, 1984
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Double-plate control device
    • Patent number 4,182,585
    • Issue date Jan 8, 1980
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic jack control device
    • Patent number 4,161,136
    • Issue date Jul 17, 1979
    • Maschinenfabrik GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Control device
    • Patent number 4,158,326
    • Issue date Jun 19, 1979
    • Hermann Hemscheidt Maschinenfabrik, GmbH & Co.
    • Karl Krieger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Multiple valve control device
    • Patent number 4,155,375
    • Issue date May 22, 1979
    • Hermann Hemscheidt Maschinenfabrik
    • Karl Krieger
    • E21 - EARTH DRILLING MINING