TREA

Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole

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Industry

  • CPC
  • E21C37/08
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C37/00Other methods or devices for dislodging with or without loading

Current Industry

E21C37/08Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulically operated splitting device
    • Patent number 10,612,377
    • Issue date Apr 7, 2020
    • DARDA GmbH
    • Burkhard Darda
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Cartridge for tunnel blasting
    • Patent number 9,382,796
    • Issue date Jul 5, 2016
    • Korea Railroad Research Institute
    • Dong Hyeon Kim
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Fluid actuated apparatus for mechanically splitting rock-like material
    • Patent number 4,790,602
    • Issue date Dec 13, 1988
    • Silvano Pocci
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Fluid actuated apparatus for mechanically splitting rock-like material
    • Patent number 4,781,418
    • Issue date Nov 1, 1988
    • Silvano Pocci
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method of breaking up objects
    • Patent number 4,042,280
    • Issue date Aug 16, 1977
    • Kubatec Kunststoff- & Bautechnik AG
    • Louis K. Garbini
    • E04 - BUILDING
  • Information Patent Grant

    Piston and cylinder assembly
    • Patent number 3,961,565
    • Issue date Jun 8, 1976
    • Fa. Werner Looser, Maschinenbau
    • Heinz Lampert
    • E04 - BUILDING
  • Information Patent Grant

    2686047
    • Patent number 2,686,047
    • Issue date Aug 10, 1954
    • E04 - BUILDING
  • Information Patent Grant

    2634114
    • Patent number 2,634,114
    • Issue date Apr 7, 1953
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2425468
    • Patent number 2,425,468
    • Issue date Aug 12, 1947
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2425467
    • Patent number 2,425,467
    • Issue date Aug 12, 1947
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2399438
    • Patent number 2,399,438
    • Issue date Apr 30, 1946
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2346678
    • Patent number 2,346,678
    • Issue date Apr 18, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2346679
    • Patent number 2,346,679
    • Issue date Apr 18, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2346676
    • Patent number 2,346,676
    • Issue date Apr 18, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2346677
    • Patent number 2,346,677
    • Issue date Apr 18, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2306572
    • Patent number 2,306,572
    • Issue date Dec 29, 1942
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2066175
    • Patent number 2,066,175
    • Issue date Dec 29, 1936
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1477601
    • Patent number 1,477,601
    • Issue date Dec 18, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1460508
    • Patent number 1,460,508
    • Issue date Jul 3, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1358767
    • Patent number 1,358,767
    • Issue date Nov 16, 1920
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1354861
    • Patent number 1,354,861
    • Issue date Oct 5, 1920
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents