TREA

Telescopic props

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Industry

  • CPC
  • E21D15/14
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Parent Industries

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

Current Industry

E21D15/14Telescopic props
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Mine roof support, pre-installation assembly for same, and method o...
    • Patent number 11,136,887
    • Issue date Oct 5, 2021
    • Burrell Mining Products, Inc.
    • Don C. Abel
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Support for use in mine
    • Patent number 9,695,690
    • Issue date Jul 4, 2017
    • Burrell Mining Products, Inc.
    • Ian Edward Healy
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Telescopic mine roof support
    • Patent number 9,347,316
    • Issue date May 24, 2016
    • Burrell Mining Products, Inc.
    • Michael T. Shook
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Self-moving tunnel support canopy
    • Patent number 9,291,053
    • Issue date Mar 22, 2016
    • Xinbin Li
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Telescopic safety device
    • Patent number 9,045,981
    • Issue date Jun 2, 2015
    • RESQTEC-ZUMRO B.V.
    • Fred Baas
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Telescopic mine roof support
    • Patent number 8,851,805
    • Issue date Oct 7, 2014
    • Burrell Mining Products, Inc.
    • Michael T. Shook
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus and method for supporting a mine rib
    • Patent number 8,371,658
    • Issue date Feb 12, 2013
    • Heintzmann Corporation
    • John J. Breedlove
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mine props
    • Patent number 5,868,527
    • Issue date Feb 9, 1999
    • HL & H Timber Products (Proprietary) Limited
    • Richard George King
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Toggle type temporary roof support for mining machinery
    • Patent number 4,460,294
    • Issue date Jul 17, 1984
    • Schroeder Brothers Corporation
    • William R. Cobb
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2903226
    • Patent number 2,903,226
    • Issue date Sep 8, 1959
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents