TREA

acting on a conveyor or a guide for the mining machine

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Industry

  • CPC
  • E21D23/085
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D23/00Mine roof supports for step- by- step movement

Current Industry

E21D23/085acting on a conveyor or a guide for the mining machine
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Method and device for monitoring operation of a mining machine unit
    • Patent number 11,746,655
    • Issue date Sep 5, 2023
    • Caterpillar Inc.
    • Euan Kirkhope
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Coal face support in a mine
    • Patent number 7,494,190
    • Issue date Feb 24, 2009
    • Tiefenbach Control Systems GmbH
    • Willi Kussel
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Measurement of the alignment of an articulated mine conveyor
    • Patent number 5,145,235
    • Issue date Sep 8, 1992
    • Gullick Dobson Limited
    • Brian G. D. Smart
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Advanceable mine roof supports
    • Patent number 4,978,248
    • Issue date Dec 18, 1990
    • Gewerkschaft Eisenhutte Westfalia, GmbH
    • Gerhard Sprenger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Chock block skidding device designed for the powered supports used...
    • Patent number 4,688,968
    • Issue date Aug 25, 1987
    • Paul Fanget
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine roof support unit
    • Patent number 4,600,340
    • Issue date Jul 15, 1986
    • Gewerkschaft Eisenhutte Westfalia
    • Harry Rosenberg
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Advance mechanism for mine roof support units
    • Patent number 4,571,127
    • Issue date Feb 18, 1986
    • Gewerkschaft Eisenhutte Westfalia
    • Gerhard Merten
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic shield-type support
    • Patent number 4,313,698
    • Issue date Feb 2, 1982
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Alfred Maykemper
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Shortwall mining machine
    • Patent number 4,196,934
    • Issue date Apr 8, 1980
    • Coal Industry (Patents) Limited
    • Ronald L. J. MacRae
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Advance mechanism for a mine roof support assembly
    • Patent number 4,195,953
    • Issue date Apr 1, 1980
    • Gewerkschaft Eisenhutte Westfalia
    • Kunibert Becker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Advance mechanism for a mine roof support unit
    • Patent number 4,187,042
    • Issue date Feb 5, 1980
    • Gewerkschaft Eisenhutte Westfalia
    • Lubomir Plevak
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Shifting device connected with a longwall conveyor for a progressiv...
    • Patent number 4,147,459
    • Issue date Apr 3, 1979
    • Thyssen Industrie AG
    • Manfred Koppers
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mining equipment
    • Patent number 4,102,139
    • Issue date Jul 25, 1978
    • Fletcher Sutcliffe Wild Limited
    • Malcolm Wake
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mining apparatus and method
    • Patent number 4,082,360
    • Issue date Apr 4, 1978
    • Peabody Coal Company
    • John A. L. Campbell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Longwall mining roof support for double deck machines
    • Patent number 4,029,361
    • Issue date Jun 14, 1977
    • Gewerkschaft Eisenhutte Westfalia
    • Klaus Beckmann
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine roof supports
    • Patent number 3,991,580
    • Issue date Nov 16, 1976
    • Gullick Dobson Limited
    • Archelaius Dawson Allen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus for preventing cave-ins of excavations
    • Patent number 3,949,562
    • Issue date Apr 13, 1976
    • Bochumer Eisenhutte Heintzmann & Co.
    • Gunter Blumenthal
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3890793
    • Patent number 3,890,793
    • Issue date Jun 24, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3550383
    • Patent number 3,550,383
    • Issue date Dec 29, 1970
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    3482878
    • Patent number 3,482,878
    • Issue date Dec 9, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3375668
    • Patent number 3,375,668
    • Issue date Apr 2, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3364683
    • Patent number 3,364,683
    • Issue date Jan 23, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3355898
    • Patent number 3,355,898
    • Issue date Dec 5, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3313211
    • Patent number 3,313,211
    • Issue date Apr 11, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3120105
    • Patent number 3,120,105
    • Issue date Feb 4, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2803444
    • Patent number 2,803,444
    • Issue date Aug 20, 1957
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents