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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 4732226 |
Drilling machine |
Mar. 22, 1988 |
| 4732225 |
Deep-borehole drilling device with magnetic coupling |
Mar. 22, 1988 |
| 4722402 |
Electromagnetic drilling apparatus and method |
Feb. 2, 1988 |
| 4694915 |
Slotted wall milling cutter |
Sep. 22, 1987 |
| 4690212 |
Drilling pipe for downhole drill motor |
Sep. 1, 1987 |
| 4679636 |
Method and apparatus for coring rock |
Jul. 14, 1987 |
| 4675259 |
Electrical energy package and method of assembly |
Jun. 23, 1987 |
| 4592432 |
Automatically operated boring head |
Jun. 3, 1986 |
| 4544041 |
Well casing inserting and well bore drilling method and means |
Oct. 1, 1985 |
| 4534427 |
Abrasive containing fluid jet drilling apparatus and process |
Aug. 13, 1985 |
| 4524834 |
Cablehead side entry sub |
Jun. 25, 1985 |
| 4436168 |
Thrust generator for boring tools |
Mar. 13, 1984 |
| 4431067 |
Wireline protector with clamping mechanism |
Feb. 14, 1984 |
| 4325438 |
Lengthening drill string containing an instrument |
Apr. 20, 1982 |
| 4317491 |
Wireline protector |
Mar. 2, 1982 |
| 4313318 |
Adjustable kelly bushing for downhole drilling system |
Feb. 2, 1982 |
| 4258802 |
Downhole drilling system |
Mar. 31, 1981 |
| 4256191 |
Intermittent high-drag oil well drilling methods and apparatus |
Mar. 17, 1981 |
| 4227584 |
Downhole flexible drive system |
Oct. 14, 1980 |
| 4185703 |
Apparatus for producing deep boreholes |
Jan. 29, 1980 |
| 4143722 |
Downhole flexible drive system |
Mar. 13, 1979 |
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