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Class Information
Number: 175/104
Name: Boring or penetrating the earth > With below-ground tool drive prime mover > Electric
Description: Apparatus in which the motor is of the type which converts electrical energy into mechanical motion.

Sub-classes under this class:

Class Number Class Name Patents
175/105 Reciprocating 9

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8616304 Bearing assemblies, and bearing apparatuses using the same Dec. 31, 2013
8496075 Bearing assemblies, bearing apparatuses using the same, and related methods Jul. 30, 2013
8327952 Self-contained system for drilling a drainhole Dec. 11, 2012
8230948 Self-contained system for drilling a drainhole Jul. 31, 2012
8151902 Slickline conveyed bottom hole assembly with tractor Apr. 10, 2012
8069933 Bearing assemblies, and bearing apparatuses and motor assemblies using same Dec. 6, 2011
8028766 Electrically powered tractor Oct. 4, 2011
7984769 Method and a device for directional control of a rock drilling machine Jul. 26, 2011
7980331 Accessible downhole power assembly Jul. 19, 2011
7870913 Bearing assemblies, and bearing apparatuses and motor assemblies using same Jan. 18, 2011
7866416 Clutch for a jack element Jan. 11, 2011
7770667 Electrically powered tractor Aug. 10, 2010
7755235 Downhole generator for drillstring instruments Jul. 13, 2010
7687950 Drillstring alternator Mar. 30, 2010
7607495 Tractor with improved valve system Oct. 27, 2009
7549467 Wellbore motor having magnetic gear drive Jun. 23, 2009
7497279 Jack element adapted to rotate independent of a drill bit Mar. 3, 2009
7484576 Jack element in communication with an electric motor and or generator Feb. 3, 2009
7407020 Rotating systems associated with drill pipe Aug. 5, 2008
7353886 Tractor with improved valve system Apr. 8, 2008
7258169 Methods of heating energy storage devices that power downhole tools Aug. 21, 2007
7222682 Chain drive system May. 29, 2007
7219722 Apparatus and methods for powering downhole electrical devices May. 22, 2007
7204324 Rotating systems associated with drill pipe Apr. 17, 2007
7201239 Power-generating device for use in drilling operations Apr. 10, 2007
7188681 Tractor with improved valve system Mar. 13, 2007
7188685 Hybrid rotary steerable system Mar. 13, 2007
7141901 Downhole torque-generating and generator combination apparatus Nov. 28, 2006
7080700 Tractor with improved valve system Jul. 25, 2006
6920946 Inverted motor for drilling rocks, soils and man-made materials and for re-entry and cleanout of existing wellbores and pipes Jul. 26, 2005
6857486 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles Feb. 22, 2005
6763887 Drill pipe having an internally coated electrical pathway Jul. 20, 2004
6745844 Hydraulic power source for downhole instruments and actuators Jun. 8, 2004
6679341 Tractor with improved valve system Jan. 20, 2004
6561289 Bottomhole assembly and methods of use May. 13, 2003
6478097 Electrically sequenced tractor Nov. 12, 2002
6467557 Long reach rotary drilling assembly Oct. 22, 2002
6347674 Electrically sequenced tractor Feb. 19, 2002
5725061 Downhole drill bit drive motor assembly with an integral bilateral signal and power conduction path Mar. 10, 1998
5202194 Apparatus and method for providing electrical power in a well Apr. 13, 1993
5060737 Drilling system Oct. 29, 1991
4971157 Apparatus for the removal of spoil when making trenches of great depth Nov. 20, 1990
4971162 Continuous drill feed apparatus Nov. 20, 1990
4913227 Equipment for a drill pipe string including a side entry sub, a safety member for anchoring a cable on a support, and a method of using the equipment Apr. 3, 1990
4899834 Electromagnetic drilling apparatus Feb. 13, 1990
4796713 Activated earth drill Jan. 10, 1989
4768888 Unitary bearing member and motor incorporating the same Sep. 6, 1988
4732225 Deep-borehole drilling device with magnetic coupling Mar. 22, 1988
4732226 Drilling machine Mar. 22, 1988
4722402 Electromagnetic drilling apparatus and method Feb. 2, 1988

1 2

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