TREA

with axial screw-and-nut, rack-and-worm, or like mechanism

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Industry

  • CPC
  • E21D15/24
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Parent Industries

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

Current Industry

E21D15/24with axial screw-and-nut, rack-and-worm, or like mechanism
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Mine support having a linearly moveable and/or pivoting end plate
    • Patent number 8,052,352
    • Issue date Nov 8, 2011
    • FCI Holdings Delaware, Inc.
    • Wallace Bolton
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method for joining the functional parts of hydraulic or pneumatic w...
    • Patent number 7,228,787
    • Issue date Jun 12, 2007
    • DBT GmbH
    • Guy Zins
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Compressible support column
    • Patent number 6,499,916
    • Issue date Dec 31, 2002
    • American Commercial Inc.
    • James E. Marianski
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Beam supporter
    • Patent number 6,364,270
    • Issue date Apr 2, 2002
    • Shinko Corporation
    • Susumu Kamei
    • E04 - BUILDING
  • Information Patent Grant

    Quick-release pit prop
    • Patent number 5,967,702
    • Issue date Oct 19, 1999
    • Harmen Reinaldus Vogelzang
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Support column for use in a mine
    • Patent number 5,484,130
    • Issue date Jan 16, 1996
    • Bochumer Eisenhutte Heintzmann GmbH & Co. KG
    • Lothar Domanski
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Improvement in or relating to a shoring leg: a shoring leg with a l...
    • Patent number 5,318,388
    • Issue date Jun 7, 1994
    • S.G.B. Holdings Limited
    • Demetrios G. Papadopoulos
    • E04 - BUILDING
  • Information Patent Grant

    Mine prop
    • Patent number 5,314,161
    • Issue date May 24, 1994
    • Bochumer Eisenhutte Heintzmann GmbH & Co. KG
    • Lothar Domanski
    • E04 - BUILDING
  • Information Patent Grant

    3197179
    • Patent number 3,197,179
    • Issue date Jul 27, 1965
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2762599
    • Patent number 2,762,599
    • Issue date Sep 11, 1956
    • E04 - BUILDING
  • Information Patent Grant

    2696359
    • Patent number 2,696,359
    • Issue date Dec 7, 1954
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2687268
    • Patent number 2,687,268
    • Issue date Aug 24, 1954
    • E04 - BUILDING
  • Information Patent Grant

    2686649
    • Patent number 2,686,649
    • Issue date Aug 17, 1954
    • E04 - BUILDING
  • Information Patent Grant

    2625369
    • Patent number 2,625,369
    • Issue date Jan 13, 1953
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2617620
    • Patent number 2,617,620
    • Issue date Nov 11, 1952
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2556357
    • Patent number 2,556,357
    • Issue date Jun 12, 1951
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2541793
    • Patent number 2,541,793
    • Issue date Feb 13, 1951
    • E04 - BUILDING
  • Information Patent Grant

    2532168
    • Patent number 2,532,168
    • Issue date Nov 28, 1950
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2506634
    • Patent number 2,506,634
    • Issue date May 9, 1950
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    2468484
    • Patent number 2,468,484
    • Issue date Apr 26, 1949
    • E04 - BUILDING
  • Information Patent Grant

    2462662
    • Patent number 2,462,662
    • Issue date Feb 22, 1949
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    2158018
    • Patent number 2,158,018
    • Issue date May 9, 1939
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1946034
    • Patent number 1,946,034
    • Issue date Feb 6, 1934
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1937547
    • Patent number 1,937,547
    • Issue date Dec 5, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1850489
    • Patent number 1,850,489
    • Issue date Mar 22, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1784991
    • Patent number 1,784,991
    • Issue date Dec 16, 1930
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    1785069
    • Patent number 1,785,069
    • Issue date Dec 16, 1930
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    1693040
    • Patent number 1,693,040
    • Issue date Nov 27, 1928
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1514262
    • Patent number 1,514,262
    • Issue date Nov 4, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1450329
    • Patent number 1,450,329
    • Issue date Apr 3, 1923
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents