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Class Information
Number: 175/97
Name: Boring or penetrating the earth > With below-ground tool drive prime mover > With means to anchor prime movers support to bore wall
Description: Apparatus including means to secure the motor support to the bore wall against either axial or rotary movement or both.

Sub-classes under this class:

Class Number Class Name Patents
175/98 Expansible anchor 31

Patents under this class:

Patent Number Title Of Patent Date Issued
8336642 Drilling system Dec. 25, 2012
8327953 Drilling tool with feed control Dec. 11, 2012
8215400 System and method for opening a window in a casing string for multilateral wellbore construction Jul. 10, 2012
8191652 Directional control drilling system Jun. 5, 2012
8028766 Electrically powered tractor Oct. 4, 2011
7770667 Electrically powered tractor Aug. 10, 2010
7743849 Dual tractor drilling system Jun. 29, 2010
6955232 Equipment for drilling vertical boreholes Oct. 18, 2005
6926102 Subsea controlled milling Aug. 9, 2005
6857486 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles Feb. 22, 2005
6761233 Apparatus for propulsion in elongated cavities Jul. 13, 2004
6722453 Stabilized downhole drilling motor Apr. 20, 2004
6655458 Formation testing instrument having extensible housing Dec. 2, 2003
6575236 Device for manipulating a tool in a well tubular Jun. 10, 2003
5205365 Pressure assisted running of tubulars Apr. 27, 1993
4669555 Downhole circulation pump Jun. 2, 1987
4051910 Two way earth boring fluid motor Oct. 4, 1977

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