TREA

with safety devices operating in the event of breakage of the cable or chain

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Industry

  • CPC
  • E21C29/20
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C29/00Propulsion of machines for slitting or completely freeing the mineral from the seam

Current Industry

E21C29/20with safety devices operating in the event of breakage of the cable or chain
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Toggle securing device for toggle joints in chain conveyors and the...
    • Patent number 5,658,085
    • Issue date Aug 19, 1997
    • DBT Deutsche Bergbau-Technik GmbH
    • Gerhard Merten
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Long-wall mining machine with a working chain
    • Patent number 5,624,162
    • Issue date Apr 29, 1997
    • Bochumer Eisenhutte Heintzmann GmbH & Co. KG
    • Kuno Guse
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Mechanisms for drawing a chain into or through a channel of a chain...
    • Patent number 5,167,437
    • Issue date Dec 1, 1992
    • Westfalia Becorit Industrietechnik GmbH
    • Gerhard Merten
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Gearing units for use with mining equipment
    • Patent number 4,682,678
    • Issue date Jul 28, 1987
    • Gewerkschaft Eisenhutte Westfalia
    • Willy Kussel
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2302034
    • Patent number 2,302,034
    • Issue date Nov 17, 1942
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2091405
    • Patent number 2,091,405
    • Issue date Aug 31, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1808224
    • Patent number 1,808,224
    • Issue date Jun 2, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1785196
    • Patent number 1,785,196
    • Issue date Dec 16, 1930
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1659923
    • Patent number 1,659,923
    • Issue date Feb 21, 1928
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1652529
    • Patent number 1,652,529
    • Issue date Dec 13, 1927
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1642182
    • Patent number 1,642,182
    • Issue date Sep 13, 1927
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1596435
    • Patent number 1,596,435
    • Issue date Aug 17, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1521022
    • Patent number 1,521,022
    • Issue date Dec 30, 1924
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents