TREA

Aligning or guiding means for the supports or for the constitutive parts of the supports

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Industry

  • CPC
  • E21D23/0409
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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

E21D23/0409Aligning or guiding means for the supports or for the constitutive parts of the supports
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Roof support connector
    • Patent number 10,914,170
    • Issue date Feb 9, 2021
    • Joy Global Underground Mining LLC
    • Nicholas Graeme Barbour
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Levelling ram for roof-shield mine support systems
    • Patent number 4,586,851
    • Issue date May 6, 1986
    • Kloeckner-Becorit GmbH
    • Willy Watermann
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine roof support
    • Patent number 4,432,673
    • Issue date Feb 21, 1984
    • Dowty Mining Equipment Limited
    • Adrian C. Buckmaster
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Advance mechanism for a mine roof support assembly
    • Patent number 4,390,308
    • Issue date Jun 28, 1983
    • Gewerkschaft Eisenhutte Westfalia
    • Kunibert Becker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine-roof support
    • Patent number 4,380,410
    • Issue date Apr 19, 1983
    • Hermann Hemscheidt Maschinenfabrik GmbH & Co.
    • Hans Bull
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Advance mechanism for a mine roof support unit
    • Patent number 4,379,661
    • Issue date Apr 12, 1983
    • Gewerkschaft Eisenhutte Westfalia
    • Egon Wojaczek
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roof support for a mine gallery which extends at a relatively large...
    • Patent number 4,352,602
    • Issue date Oct 5, 1982
    • Bochumer Eisenhuette Heintzmann GmbH & Co.
    • Kurt Plaga
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roof-support distancing apparatus
    • Patent number 4,330,226
    • Issue date May 18, 1982
    • Herman Hemscheidt Maschinenfabrik GmbH & Co.
    • Josef Welzel
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus for supporting a mine roof support assembly
    • Patent number 4,324,510
    • Issue date Apr 13, 1982
    • Gewerkschaft Eisenhutte Westfalia
    • Hans-Joachim Dreher
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine roof support
    • Patent number 4,309,130
    • Issue date Jan 5, 1982
    • Bochumer Eisenhutte Heintzmann GmbH & Co
    • Hans-Ferdinand Bemmerl
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Walking roof support
    • Patent number 4,293,248
    • Issue date Oct 6, 1981
    • Centralny Osrodek Projektowo-Konstrukcyjny Maszyn Gorniczych "Komag"
    • Wincenty Pretor
    • 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

    Mine roof support assembly
    • Patent number 4,184,791
    • Issue date Jan 22, 1980
    • Gewerkschaft Eisenhutte Westfalia
    • Kunibert Becker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Shield-type support assemblies for mine workings
    • Patent number 4,075,857
    • Issue date Feb 28, 1978
    • Gewerkschaft Eisenhutte Westfalia
    • Burckhardt Elsner
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine roof support assemblies
    • Patent number 4,073,151
    • Issue date Feb 14, 1978
    • Gewerkschaft Eisenhutte Westfalia
    • Gunter Harmsma
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine roof support
    • Patent number 4,010,618
    • Issue date Mar 8, 1977
    • Dowty Mining Equipment Limited
    • John Hirst Walker
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pit prop assembly
    • Patent number 4,008,578
    • Issue date Feb 22, 1977
    • Bochumer Eisenhutte Heintzmann & Company
    • Gunter Blumenthal
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roof-supporting arrangement
    • Patent number 3,987,634
    • Issue date Oct 26, 1976
    • Hermann Hemscheidt Maschinenfabrik
    • Josef Welzel
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3911686
    • Patent number 3,911,686
    • Issue date Oct 14, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3651652
    • Patent number 3,651,652
    • Issue date Mar 28, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3646768
    • Patent number 3,646,768
    • Issue date Mar 7, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3603098
    • Patent number 3,603,098
    • Issue date Sep 7, 1971
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3592011
    • Patent number 3,592,011
    • Issue date Jul 13, 1971
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3563040
    • Patent number 3,563,040
    • Issue date Feb 16, 1971
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3536433
    • Patent number 3,536,433
    • Issue date Oct 27, 1970
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3525227
    • Patent number 3,525,227
    • Issue date Aug 25, 1970
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3524321
    • Patent number 3,524,321
    • Issue date Aug 18, 1970
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3505823
    • Patent number 3,505,823
    • Issue date Apr 14, 1970
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3490243
    • Patent number 3,490,243
    • Issue date Jan 20, 1970
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

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

Patents Applicationslast 30 patents

  • Information Patent Application

    ROOF SUPPORT CONNECTOR
    • Publication number 20200131906
    • Publication date Apr 30, 2020
    • Joy Global Underground Mining LLC
    • Nicholas Graeme Barbour
    • E21 - EARTH DRILLING MINING