TREA

impact being obtained by gravity only

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  • CPC
  • E21B4/08
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21BEARTH DRILLING E21B4/00Drives used in the borehole

Current Industry

E21B4/08impact being obtained by gravity only
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Assembly and method for jarring a drilling drive pipe into undersea...
    • Patent number 6,626,248
    • Issue date Sep 30, 2003
    • Smith International, Inc.
    • Billy J. Roberts
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Multiple blow percussion drill assembly with rapid field maintenanc...
    • Patent number 5,022,474
    • Issue date Jun 11, 1991
    • Allen E. Bardwell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Soil penetration and sampling system
    • Patent number 4,770,030
    • Issue date Sep 13, 1988
    • James C. Smith
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Percussion drill string assembly
    • Patent number 4,727,944
    • Issue date Mar 1, 1988
    • Clifford C. Bottoms
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Gravity percussion drill with upper end cocking spring and method o...
    • Patent number 4,440,245
    • Issue date Apr 3, 1984
    • Allen E. Bardwell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Well point and method of driving same
    • Patent number 4,368,785
    • Issue date Jan 18, 1983
    • John T. Gondek
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Reciprocating drill bit
    • Patent number 4,354,561
    • Issue date Oct 19, 1982
    • Haney; Bell Charles
    • Clifford K. Logan
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3912023
    • Patent number 3,912,023
    • Issue date Oct 14, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3395767
    • Patent number 3,395,767
    • Issue date Aug 6, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3388753
    • Patent number 3,388,753
    • Issue date Jun 18, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3361220
    • Patent number 3,361,220
    • Issue date Jan 2, 1968
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3168152
    • Patent number 3,168,152
    • Issue date Feb 2, 1965
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3128102
    • Patent number 3,128,102
    • Issue date Apr 7, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3036647
    • Patent number 3,036,647
    • Issue date May 29, 1962
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2835474
    • Patent number 2,835,474
    • Issue date May 20, 1958
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2574605
    • Patent number 2,574,605
    • Issue date Nov 13, 1951
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2566913
    • Patent number 2,566,913
    • Issue date Sep 4, 1951
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2499508
    • Patent number 2,499,508
    • Issue date Mar 7, 1950
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    2143349
    • Patent number 2,143,349
    • Issue date Jan 10, 1939
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2139077
    • Patent number 2,139,077
    • Issue date Dec 6, 1938
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1907190
    • Patent number 1,907,190
    • Issue date May 2, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1888126
    • Patent number 1,888,126
    • Issue date Nov 15, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1831942
    • Patent number 1,831,942
    • Issue date Nov 17, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1770214
    • Patent number 1,770,214
    • Issue date Jul 8, 1930
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1725842
    • Patent number 1,725,842
    • Issue date Aug 27, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1702680
    • Patent number 1,702,680
    • Issue date Feb 19, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1637511
    • Patent number 1,637,511
    • Issue date Aug 2, 1927
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1620985
    • Patent number 1,620,985
    • Issue date Mar 15, 1927
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1600744
    • Patent number 1,600,744
    • Issue date Sep 21, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1599086
    • Patent number 1,599,086
    • Issue date Sep 7, 1926
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents