TREA

Bolts held in the borehole by friction all along their length, without additional fixing means

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Industry

  • CPC
  • E21D21/004
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working , or shaft-lining protection

Current Industry

E21D21/004Bolts held in the borehole by friction all along their length, without additional fixing means
Industries

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    ANCHOR BOLT WITH ANTI PROJECTION MECHANISM
    • Publication number 20240175359
    • Publication date May 30, 2024
    • Grillage Major Inc.
    • Jonathan COTES
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    ROCK BOLT ASSEMBLY HAVING AN INDICATOR
    • Publication number 20240125233
    • Publication date Apr 18, 2024
    • ROCBOLT TECHNOLOGIES (PTY) LTD.
    • Werner BELLINGHAM
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DRILLING ASSEMBLY FOR INSERTING A ROCK BOLT
    • Publication number 20230074816
    • Publication date Mar 9, 2023
    • HARDROCK MINING SOLUTIONS PTY LTD
    • Clarissa Elizabeth MCLAREN
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    FRICTION STABILIZER
    • Publication number 20220316335
    • Publication date Oct 6, 2022
    • Jason WASLEY
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TYPE OF ENERGY-ABSORBING ROCK BOLT DEVICE WITH UMBRELLA-SHAPED STRU...
    • Publication number 20220010681
    • Publication date Jan 13, 2022
    • Institute of Geology and Geophysics, Chinese Academy of Sciences
    • Songfeng Guo
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    NON-METALLIC SPLIT SET ROCKBOLT
    • Publication number 20210363885
    • Publication date Nov 25, 2021
    • SETEVOX (PTY) LTD
    • Johann Adriaan VENTER
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    RETAINER DEVICE FOR A ROCK ANCHOR, ROCK ANCHOR SYSTEM AND ASSOCIATE...
    • Publication number 20210324739
    • Publication date Oct 21, 2021
    • Jusand Nominees Pty Ltd
    • Sam Thomas
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    SELF-DRILLING HYBRID ROCK ANCHOR
    • Publication number 20210222554
    • Publication date Jul 22, 2021
    • EPIROC DRILLING TOOLS AB
    • Greig KNOX
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    MINING HYDRAULIC CONSTANT-RESISTANCE DEFORMING AND AUTOMATIC PRESSU...
    • Publication number 20210017860
    • Publication date Jan 21, 2021
    • Henan Polytechnic University
    • Hua NAN
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Reaming and Self-Rotating Anchor Rod and Using Method Thereof
    • Publication number 20200248552
    • Publication date Aug 6, 2020
    • China University of Mining and Technology
    • Nong ZHANG
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    ROCK BOLT ASSEMBLY WITH FAILURE ARRESTOR
    • Publication number 20200063557
    • Publication date Feb 27, 2020
    • EPIROC HOLDINGS SOUTH AFRICA (PTY) LTD
    • Paolo Ettore PASTORINO
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    FRICTION ROCK BOLT
    • Publication number 20200063558
    • Publication date Feb 27, 2020
    • Sandvik Intellectual Property AB
    • Bradley DARLINGTON
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    FRICTION ROCK BOLT
    • Publication number 20200063556
    • Publication date Feb 27, 2020
    • Bradley DARLINGTON
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    M-TYPE ENERGY-ABSORBING ROCKBOLT
    • Publication number 20200011178
    • Publication date Jan 9, 2020
    • NORTHEASTERN UNIVERSITY
    • Xing dong ZHAO
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    PNEUMATIC DRILL INSTALLED ROCK ANCHOR
    • Publication number 20190390550
    • Publication date Dec 26, 2019
    • NCM INNOVATIONS (PTY) LTD
    • Rual ABREU
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    COMPOSITE YIELDABLE ROCK ANCHOR WITH IMPROVED DEFORMATION RANGE
    • Publication number 20190376388
    • Publication date Dec 12, 2019
    • Minova International Limited
    • Michael Hosp
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    FRICTION BOLT
    • Publication number 20190316467
    • Publication date Oct 17, 2019
    • Sandvik Intellectual Property AB
    • Mieczyslaw RATAJ
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    System for Re-Tensioning Mine Roof Channels
    • Publication number 20190292909
    • Publication date Sep 26, 2019
    • FCI HOLDINGS DELAWARE, INC.
    • Ben Mirabile
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Rock Bolt
    • Publication number 20190277138
    • Publication date Sep 12, 2019
    • FCI HOLDINGS DELAWARE, INC.
    • Trent Roberts
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    METHOD AND SYSTEM OF COAL MINE ROOF STABILIZATION
    • Publication number 20190153862
    • Publication date May 23, 2019
    • REI, Inc.
    • Daniel J. BRUNNER
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    GROUTABLE ROCK ANCHOR ASSEMBLY
    • Publication number 20190100998
    • Publication date Apr 4, 2019
    • NCM INNOVATIONS (PTY) LTD
    • Paolo Ettore PASTORINO
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    FRICTION BOLT
    • Publication number 20180347358
    • Publication date Dec 6, 2018
    • Sandvik Intellectual Property AB
    • Mieczyslaw RATAJ
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    CABLE BOLTS
    • Publication number 20180245468
    • Publication date Aug 30, 2018
    • N.V. BEKAERT S.A.
    • Christophe MESPLONT
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    RADIALLY EXPANSIBLE ROCK BOLT
    • Publication number 20180230801
    • Publication date Aug 16, 2018
    • NCM INNOVATIONS (PTY) LTD
    • James William SHEPPARD
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    A Sectional Modular Large-Deformation-Resistant Impact-Resistant Co...
    • Publication number 20180202122
    • Publication date Jul 19, 2018
    • Guoan XU
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Corrosion Resistant Expandable Bolt
    • Publication number 20180135411
    • Publication date May 17, 2018
    • FCI HOLDINGS DELAWARE, INC.
    • John C. Stankus
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Application

    Improved Drilling Assembly Comprising a Friction Bolt
    • Publication number 20180112529
    • Publication date Apr 26, 2018
    • Fero Group Pty Ltd
    • Matthew David McLaren
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Corrosion Resistant Yieldable Bolt
    • Publication number 20180016900
    • Publication date Jan 18, 2018
    • FCI HOLDINGS DELAWARE, INC.
    • Lumin Ma
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    Drill Bit for Use with a Friction Bolt
    • Publication number 20180003057
    • Publication date Jan 4, 2018
    • Fero Group Pty Ltd
    • Matthew David McLaren
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    METHOD OF SUPPORTING A ROCK WALL
    • Publication number 20170342836
    • Publication date Nov 30, 2017
    • NCM INNOVATIONS (PTY) LTD
    • Martin CAWOOD
    • E21 - EARTH DRILLING MINING