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with breaking-down members having a striking action

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  • CPC
  • E21C27/122
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Parent Industries

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

Current Industry

E21C27/122with breaking-down members having a striking action
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic hammering device
    • Patent number 11,034,010
    • Issue date Jun 15, 2021
    • Furukawa Rock Drill Co., Ltd.
    • Tsutomu Kaneko
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • 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

    2750178
    • Patent number 2,750,178
    • Issue date Jun 12, 1956
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2721066
    • Patent number 2,721,066
    • Issue date Oct 18, 1955
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2697592
    • Patent number 2,697,592
    • Issue date Dec 21, 1954
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2636722
    • Patent number 2,636,722
    • Issue date Apr 28, 1953
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2614822
    • Patent number 2,614,822
    • Issue date Oct 21, 1952
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2531072
    • Patent number 2,531,072
    • Issue date Nov 21, 1950
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2424180
    • Patent number 2,424,180
    • Issue date Jul 15, 1947
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2368863
    • Patent number 2,368,863
    • Issue date Feb 6, 1945
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2329875
    • Patent number 2,329,875
    • Issue date Sep 21, 1943
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2308517
    • Patent number 2,308,517
    • Issue date Jan 19, 1943
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2077432
    • Patent number 2,077,432
    • Issue date Apr 20, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1884946
    • Patent number 1,884,946
    • Issue date Oct 25, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1643000
    • Patent number 1,643,000
    • Issue date Sep 20, 1927
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1585041
    • Patent number 1,585,041
    • Issue date May 18, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1439666
    • Patent number 1,439,666
    • Issue date Dec 19, 1922
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1424113
    • Patent number 1,424,113
    • Issue date Jul 25, 1922
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1424114
    • Patent number 1,424,114
    • Issue date Jul 25, 1922
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1378830
    • Patent number 1,378,830
    • Issue date May 17, 1921
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1378360
    • Patent number 1,378,360
    • Issue date May 17, 1921
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1378361
    • Patent number 1,378,361
    • Issue date May 17, 1921
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1315271
    • Patent number 1,315,271
    • Issue date Sep 9, 1919
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1234912
    • Patent number 1,234,912
    • Issue date Jul 31, 1917
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1145331
    • Patent number 1,145,331
    • Issue date Jul 6, 1915
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1127395
    • Patent number 1,127,395
    • Issue date Feb 9, 1915
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1062854
    • Patent number 1,062,854
    • Issue date May 27, 1913
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    919422
    • Patent number 919,422
    • Issue date Apr 27, 1909
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    898661
    • Patent number 898,661
    • Issue date Sep 15, 1908
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    885044
    • Patent number 885,044
    • Issue date Apr 21, 1908
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Hydraulic Hammering Device
    • Publication number 20190210205
    • Publication date Jul 11, 2019
    • Furukawa Rock Drill Co., Ltd.
    • Tsutomu Kaneko
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS