TREA

Devices for setting props or chocks

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Industry

  • CPC
  • E21D15/58
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Parent Industries

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

Current Industry

E21D15/58Devices for setting props or chocks
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Mechanical constant-resistance single prop continuous prop lifting...
    • Patent number 10,844,717
    • Issue date Nov 24, 2020
    • China University of Mining and Technology
    • Yanlong Chen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic assembly for a mining system
    • Patent number 9,982,799
    • Issue date May 29, 2018
    • Caterpillar Global Mining Europe GmbH
    • James Hassell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Device for roof support of underground mine/tunnel
    • Patent number 9,267,375
    • Issue date Feb 23, 2016
    • Council of Scientific and Industrial Research
    • Sudhir Kumar Kashyap
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mining machine with sliding cutting tool assembly
    • Patent number 6,428,109
    • Issue date Aug 6, 2002
    • Voest-Alpine Bergtechnik Gesellschaft m.b.H.
    • Karl Lerchbaum
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method of installation of cuttable mine support
    • Patent number 6,196,635
    • Issue date Mar 6, 2001
    • Fosroc International Limited
    • A. J. Rohaly
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Arrangement for erecting columnar supporting elements for undergrou...
    • Patent number 4,332,512
    • Issue date Jun 1, 1982
    • Bochumer Eisenhuette Heintzmann GmbH & Co.
    • Peter Heintzmann
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Excavation roof support and method of installing the same
    • Patent number 4,277,204
    • Issue date Jul 7, 1981
    • Bochumer Eisenhutte Heintzmann GmbH & Co
    • Manfred Koppers
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Self-advancing mine roof supports
    • Patent number 3,991,578
    • Issue date Nov 16, 1976
    • Gullick Dobson Limited
    • John Cooke
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3854295
    • Patent number 3,854,295
    • Issue date Dec 17, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3567929
    • Patent number 3,567,929
    • Issue date Mar 2, 1971
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    3490244
    • Patent number 3,490,244
    • Issue date Jan 20, 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

    3371901
    • Patent number 3,371,901
    • Issue date Mar 5, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3333425
    • Patent number 3,333,425
    • Issue date Aug 1, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3260492
    • Patent number 3,260,492
    • Issue date Jul 12, 1966
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3238847
    • Patent number 3,238,847
    • Issue date Mar 8, 1966
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    3197244
    • Patent number 3,197,244
    • Issue date Jul 27, 1965
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3148714
    • Patent number 3,148,714
    • Issue date Sep 15, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3143862
    • Patent number 3,143,862
    • Issue date Aug 11, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3051431
    • Patent number 3,051,431
    • Issue date Aug 28, 1962
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3041975
    • Patent number 3,041,975
    • Issue date Jul 3, 1962
    • B30 - PRESSES
  • Information Patent Grant

    2985419
    • Patent number 2,985,419
    • Issue date May 23, 1961
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2973178
    • Patent number 2,973,178
    • Issue date Feb 28, 1961
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2953343
    • Patent number 2,953,343
    • Issue date Sep 20, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2938699
    • Patent number 2,938,699
    • Issue date May 31, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2928643
    • Patent number 2,928,643
    • Issue date Mar 15, 1960
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2907349
    • Patent number 2,907,349
    • Issue date Oct 6, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2888231
    • Patent number 2,888,231
    • Issue date May 26, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2888230
    • Patent number 2,888,230
    • Issue date May 26, 1959
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents