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Class Information
Number: 175/92
Name: Boring or penetrating the earth > With below-ground tool drive prime mover
Description: Apparatus including a means adapted to drive a boring tool through recurring cycles comprising a means commonly called a motor which is adapted to convert a source of energy into simple mechanical motion, said motor being so related to the boring tool that it enters the borehole and advances with the boring tool as the boring tool performs its earth boring function.

Sub-classes under this class:

Class Number Class Name Patents
175/93 Below-ground (1) generation of motive fluid, or (2) storage of motivating energy 49
175/100 Discharge passage for motive fluid directed toward bore entrance 32
175/104 Electric 74
175/107 Fluid rotary type 433
175/95 Plural below-ground drive prime movers 23
175/103 With above-ground means 36
175/102 With below-ground conveyer or impeller for removal of cuttings 27
175/94 With below-ground feed means 83
175/97 With means to anchor prime movers support to bore wall 17
175/106 With mechanical motion-converting means 97
175/101 With positive connection between tool and support shaft for rotary below ground motor 56

Patents under this class:
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Patent Number Title Of Patent Date Issued
8602127 High temperature drilling motor drive with cycloidal speed reducer Dec. 10, 2013
8408335 Drill string with modular motor units Apr. 2, 2013
8316965 Drilling tool with fluid cleaner Nov. 27, 2012
8297379 Systems and methods for providing a gearless drilling turbine Oct. 30, 2012
8146679 Valve-controlled downhole motor Apr. 3, 2012
7849927 Running bore-lining tubulars Dec. 14, 2010
7810584 Method of directional drilling with steerable drilling motor Oct. 12, 2010
7703550 Down hole motor with locking mechanism Apr. 27, 2010
7658244 Device for advancing drillings in the ground Feb. 9, 2010
7523792 Method and apparatus for shifting speeds in a fluid-actuated motor Apr. 28, 2009
7481283 Wellbore motor having magnetic gear drive Jan. 27, 2009
7464770 Closed-loop control of hydraulic pressure in a downhole steering tool Dec. 16, 2008
7426965 Power transmission unit of an impactor, a hydraulic jet impactor and the application thereof Sep. 23, 2008
7353890 Down-the-hole hammer and components for a down-the-hole hammer, and a method of assembling a down-the-hole hammer Apr. 8, 2008
7299886 Stabilized down hole drilling motor Nov. 27, 2007
7040420 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells May. 9, 2006
6955231 Tool for changing the drilling direction while drilling Oct. 18, 2005
6863137 Well system Mar. 8, 2005
6814165 Hard rock drilling device and method Nov. 9, 2004
6607607 Coiled tubing wellbore cleanout Aug. 19, 2003
6424066 System for reducing wear and improving longevity of a electric submergible pumping system Jul. 23, 2002
6315063 Reciprocating rotary drilling motor Nov. 13, 2001
6311791 Hydraulic underreamer and sections for use therein Nov. 6, 2001
6305469 Method of creating a wellbore Oct. 23, 2001
6296066 Well system Oct. 2, 2001
6241030 Hydraulic underreamer and sections for use therein Jun. 5, 2001
6237702 Hydraulic underreamer and sections for use thereof May. 29, 2001
6223839 Hydraulic underreamer and sections for use therein May. 1, 2001
6209666 Percussive down-the-hole hammer and a piston and drill bit therefor Apr. 3, 2001
6138777 Hydraulic underreamer and sections for use therein Oct. 31, 2000
5964307 Shock tool for use in directional drilling Oct. 12, 1999
5845721 Drilling device and method of drilling wells Dec. 8, 1998
5803188 Hydraulically driven percussion hammer Sep. 8, 1998
5526887 Device for drilling holes in the crust of the earth, especially for drilling oil wells Jun. 18, 1996
5497839 Liquid-driven downhole hammer drill Mar. 12, 1996
5343967 Apparatus for optional straight or directional drilling underground formations Sep. 6, 1994
5307883 Method and apparatus for controlling a ramming device May. 3, 1994
5253722 Impact borer for embedding lines, anchoring cables and sinking wells Oct. 19, 1993
5238073 Uphole hammer Aug. 24, 1993
5193627 Apparatus for controlling a ramming device Mar. 16, 1993
5139096 Pneumatic percussion hammers Aug. 18, 1992
5115875 Hammer drills for making boreholes May. 26, 1992
5088568 Hydro-mechanical device for underground drilling Feb. 18, 1992
5065826 Apparatus for optional straight or directional drilling underground formations Nov. 19, 1991
4938297 Ram boring machine Jul. 3, 1990
4932483 Down hole hammer Jun. 12, 1990
4923018 Percussion drill May. 8, 1990
4921056 Hammer drills for making boreholes May. 1, 1990
4917194 Improved downhole hammer Apr. 17, 1990
4913243 Percussion drill and method of controlling same Apr. 3, 1990

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