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by percussive drills with breaking-down means

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  • CPC
  • E21C27/28
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C27/00Machines which completely free the mineral from the seam

Current Industry

E21C27/28by percussive drills with breaking-down means
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Rock cutting assembly
    • Patent number 11,319,754
    • Issue date May 3, 2022
    • Joy Global Underground Mining LLC
    • Nagy Daher
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Rock cutting assembly
    • Patent number 11,274,497
    • Issue date Mar 15, 2022
    • Joy Global Underground Mining LLC
    • Nagy Daher
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Non-concentric protruding shaft fixed bearing reciprocating impact...
    • Patent number 10,400,597
    • Issue date Sep 3, 2019
    • Suhua Liu
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling and bursting heading machine
    • Patent number 10,233,755
    • Issue date Mar 19, 2019
    • China University of Mining and Technology
    • Songyong Liu
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tool for breaking hammer, breaking hammer, and use thereof
    • Patent number 9,095,968
    • Issue date Aug 4, 2015
    • Sandvik Mining and Construction Oy
    • Ossi Kahra
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Vibratory milling machine having linear reciprocating motion
    • Patent number 8,079,647
    • Issue date Dec 20, 2011
    • Longyear TM, Inc.
    • Jing James Yao
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Vibratory machine
    • Patent number 8,056,985
    • Issue date Nov 15, 2011
    • Longyear TM, Inc.
    • Jing James Yao
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Continuous vibratory milling machine
    • Patent number 7,828,393
    • Issue date Nov 9, 2010
    • Boart Longyear Inc.
    • Jing James Yao
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Vibratory milling machine having linear reciprocating motion
    • Patent number 7,434,890
    • Issue date Oct 14, 2008
    • Boart Longyear Inc.
    • Jing James Yao
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Excavation machine having combined impact hammers and static ripper...
    • Patent number 5,333,937
    • Issue date Aug 2, 1994
    • David J. Hopkins
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Impact assisted segmented cutterhead
    • Patent number 5,123,710
    • Issue date Jun 23, 1992
    • The United States of America as represented by the Secretary of the Interior
    • Roger J. Morrell
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Impact kerfing rock cutter and method
    • Patent number 5,028,092
    • Issue date Jul 2, 1991
    • Coski Enterprises, Ltd.
    • William D. Coski
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Fluid-powered impact device and tool therefor
    • Patent number 4,858,701
    • Issue date Aug 22, 1989
    • Paul P. Weyer
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Movable device for openpit mining
    • Patent number 4,778,221
    • Issue date Oct 18, 1988
    • Voest-Alpine Aktiengesellschaft
    • Horst Kolleth
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Percussive tool with high pressure fluid jet
    • Patent number 4,736,808
    • Issue date Apr 12, 1988
    • Canadian Patents and Development Limited/Societe Canadienne des Brevets et d'...
    • Bruce James
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Method of and apparatus for building thin lining on tunnel
    • Patent number 4,666,336
    • Issue date May 19, 1987
    • Okumura Corporation
    • Susumu Murakami
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hammer
    • Patent number 4,550,785
    • Issue date Nov 5, 1985
    • Consolidated Technologies Corporation
    • George A. Hibbard
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Continuous mining machine
    • Patent number 4,363,519
    • Issue date Dec 14, 1982
    • Joy Manufacturing Company
    • Thomas E. Howard
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hammer
    • Patent number 4,282,937
    • Issue date Aug 11, 1981
    • Joy Manufacturing Company
    • George A. Hibbard
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Mechanically actuated impact mechanism
    • Patent number 4,247,149
    • Issue date Jan 27, 1981
    • Caterpillar Tractor Co.
    • Richard E. Livesay
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Methods of and apparatus for winning reef
    • Patent number 4,071,095
    • Issue date Jan 31, 1978
    • Atlas Copco Aktiebolag
    • Lorne Robert Herron
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic hammers hydraulically driven impactor
    • Patent number 4,052,107
    • Issue date Oct 4, 1977
    • The Secretary of State for Industry in Her Britannic Majesty's Government of...
    • Andrew George Hay
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Low profile soaking pit machine
    • Patent number 3,995,344
    • Issue date Dec 7, 1976
    • Louis A. Grant, Inc.
    • Leo J. Meyers
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Rock breaking apparatus
    • Patent number 3,981,540
    • Issue date Sep 21, 1976
    • Creare, Incorporated
    • Ivor Hawkes
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3922017
    • Patent number 3,922,017
    • Issue date Nov 25, 1975
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    3907366
    • Patent number 3,907,366
    • Issue date Sep 23, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3868145
    • Patent number 3,868,145
    • Issue date Feb 25, 1975
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    3860290
    • Patent number 3,860,290
    • Issue date Jan 14, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3854776
    • Patent number 3,854,776
    • Issue date Dec 17, 1974
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3826536
    • Patent number 3,826,536
    • Issue date Jul 30, 1974
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents