TREA

Arrangement of valves

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Industry

  • CPC
  • E21D15/512
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D15/00Props Chocks

Current Industry

E21D15/512Arrangement of valves
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulically trippable check valve for underground mine support hy...
    • Patent number 6,073,654
    • Issue date Jun 13, 2000
    • DBT Deutsche Bergbau-Technik GmbH
    • Michael Dettmers
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valves
    • Patent number 5,950,673
    • Issue date Sep 14, 1999
    • Joy MM Delaware, Inc.
    • Peter Elliott-Moore
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Prestressing of mine props
    • Patent number 5,669,739
    • Issue date Sep 23, 1997
    • HL&H Timber Products (Proprietary) Limited
    • Graham Heath Clarke
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Support prop with integrated pressure limiting valve and nailed pipes
    • Patent number 5,611,646
    • Issue date Mar 18, 1997
    • Richard Voss Grubenausbau GmbH
    • Richard Voss
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pressure-compensated pressure limiting valve
    • Patent number 5,462,076
    • Issue date Oct 31, 1995
    • Richard Voss Grubenausbau GmbH
    • Richard Voss
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Yield valve
    • Patent number 5,454,669
    • Issue date Oct 3, 1995
    • Longwall Roof Supports Limited
    • Christopher J. Oziem
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Individual hydraulic prop with filling/drawing valve and pressure f...
    • Patent number 5,297,901
    • Issue date Mar 29, 1994
    • Grubenausbau GmbH
    • Richard Voss
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valve units for use in hydraulic control systems of mining equipment
    • Patent number 5,159,872
    • Issue date Nov 3, 1992
    • Gewerkschaft Eisenhutte Westfalia GmbH
    • Michael Dettmers
    • 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

    Valve devices
    • Patent number 4,580,594
    • Issue date Apr 8, 1986
    • Dobson Park Industries PLC.
    • Nigel J. Petts
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mining cylinder hydraulic slide valve
    • Patent number 4,516,601
    • Issue date May 14, 1985
    • Bennes Marrel
    • Roger Chanal
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Excess pressure valve particularly for a fluid pressure operated te...
    • Patent number 4,274,435
    • Issue date Jun 23, 1981
    • Thyssen Industrie AG
    • Siegmar Block
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulically operated mine prop with safety valve
    • Patent number 4,252,476
    • Issue date Feb 24, 1981
    • Bochumer Eisenhutte Heintzmann GmbH & Co
    • Manfred Koppers
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic mine prop
    • Patent number 4,142,449
    • Issue date Mar 6, 1979
    • Thyssen Industrie AG
    • Manfred Koppers
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pressure relief valve for hydraulic mine supporting elements
    • Patent number 4,111,227
    • Issue date Sep 5, 1978
    • Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesell...
    • Siegfried Sigott
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pressure relief valve
    • Patent number 4,091,838
    • Issue date May 30, 1978
    • Dowty Mining Equipment Limited
    • George Herbert Dowty
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3777619
    • Patent number 3,777,619
    • Issue date Dec 11, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3776098
    • Patent number 3,776,098
    • Issue date Dec 4, 1973
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3515166
    • Patent number 3,515,166
    • Issue date Jun 2, 1970
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3426995
    • Patent number 3,426,995
    • Issue date Feb 11, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3422864
    • Patent number 3,422,864
    • Issue date Jan 21, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3318331
    • Patent number 3,318,331
    • Issue date May 9, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3295814
    • Patent number 3,295,814
    • Issue date Jan 3, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3148860
    • Patent number 3,148,860
    • Issue date Sep 15, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3142156
    • Patent number 3,142,156
    • Issue date Jul 28, 1964
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    3134398
    • Patent number 3,134,398
    • Issue date May 26, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3046947
    • Patent number 3,046,947
    • Issue date Jul 31, 1962
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2997272
    • Patent number 2,997,272
    • Issue date Aug 22, 1961
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2987075
    • Patent number 2,987,075
    • Issue date Jun 6, 1961
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    SUPPORT PROP
    • Publication number 20140072374
    • Publication date Mar 13, 2014
    • ELBROC MINING PRODUCTS (PTY) LTD
    • Grant ROACH
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    SUPPORT FOR UNDERGROUND MINING AND TUNNEL CONSTRUCTION
    • Publication number 20090202310
    • Publication date Aug 13, 2009
    • Bochumer Eisenhutte Heintzmann GmbH & Co. KG
    • MANFRED KOPPERS
    • E21 - EARTH DRILLING MINING