| |
 |
|
Class Information
Number: 175/26
Name: Boring or penetrating the earth > Automatic control > Of boring means including a below-ground drive prime mover
Description: Subject matter in which a below ground drive prime mover comprises part of the boring means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6152246 |
Method of and system for monitoring drilling parameters |
Nov. 28, 2000 |
| 6142244 |
Percussion boring machine with run monitoring |
Nov. 7, 2000 |
| 6050348 |
Drilling method and apparatus |
Apr. 18, 2000 |
| 6049279 |
Detectable transponder conduit end cap |
Apr. 11, 2000 |
| 5934383 |
Steering device for steerable drilling tool |
Aug. 10, 1999 |
| 5880680 |
Apparatus and method for determining boring direction when boring underground |
Mar. 9, 1999 |
| 5857530 |
Vertical positioning system for drilling boreholes |
Jan. 12, 1999 |
| 5819859 |
Apparatus and method for detecting an underground structure |
Oct. 13, 1998 |
| 5752572 |
Tractor for remote movement and pressurization of a rock drill |
May. 19, 1998 |
| 5720354 |
Trenchless underground boring system with boring tool location |
Feb. 24, 1998 |
| 5507353 |
Method and system for controlling the rotary speed stability of a drill bit |
Apr. 16, 1996 |
| 5394951 |
Bottom hole drilling assembly |
Mar. 7, 1995 |
| 5353884 |
Positioning device for a member and drilling system employing said positioning device |
Oct. 11, 1994 |
| 5350028 |
Device for adjusting the path of a rotary drilling tool |
Sep. 27, 1994 |
| 5332048 |
Method and apparatus for automatic closed loop drilling system |
Jul. 26, 1994 |
| 5327980 |
Drill head |
Jul. 12, 1994 |
| 5320180 |
Dual antenna radio frequency locating apparatus and method |
Jun. 14, 1994 |
| 5320179 |
Steering sub for flexible drilling |
Jun. 14, 1994 |
| 5316090 |
Attitude control device and drilling-direction control device |
May. 31, 1994 |
| 5314030 |
System for continuously guided drilling |
May. 24, 1994 |
| 5307885 |
Attitude and drilling-direction control device |
May. 3, 1994 |
| 5305836 |
System and method for controlling drill bit usage and well plan |
Apr. 26, 1994 |
| 5296915 |
Method and apparatus for controlling direction of excavating machine |
Mar. 22, 1994 |
| 5273122 |
Automatic method for monitoring the vibrational state of a drill string |
Dec. 28, 1993 |
| 5269383 |
Navigable downhole drilling system |
Dec. 14, 1993 |
| 5255749 |
Steerable burrowing mole |
Oct. 26, 1993 |
| 5242025 |
Guided oscillatory well path drilling by seismic imaging |
Sep. 7, 1993 |
| 5240082 |
Rotary boring machine |
Aug. 31, 1993 |
| 5186579 |
Apparatus for controlling direction of underground excavator |
Feb. 16, 1993 |
| 5168941 |
Drilling tool for sinking wells in underground rock formations |
Dec. 8, 1992 |
| 5156222 |
Directional drilling tool apparatus and method |
Oct. 20, 1992 |
| 5101912 |
Steerable ground drilling devices |
Apr. 7, 1992 |
| 4976321 |
Horizontal earth boring machine and method |
Dec. 11, 1990 |
| 4936397 |
Earth drilling apparatus with control valve |
Jun. 26, 1990 |
| 4896733 |
Technique for providing an underground tunnel utilizing a powered boring device |
Jan. 30, 1990 |
| 4881083 |
Homing technique for an in-ground boring device |
Nov. 14, 1989 |
| 4875014 |
System and method for locating an underground probe having orthogonally oriented magnetometers |
Oct. 17, 1989 |
| 4856600 |
Technique for providing an underground tunnel utilizing a powered boring device |
Aug. 15, 1989 |
| 4854397 |
System for directional drilling and related method of use |
Aug. 8, 1989 |
| 4834193 |
Earth boring apparatus and method with control valve |
May. 30, 1989 |
| 4825962 |
Drilling system |
May. 2, 1989 |
| 4821815 |
Technique for providing an underground tunnel utilizing a powered boring device |
Apr. 18, 1989 |
| 4804051 |
Method of predicting and controlling the drilling trajectory in directional wells |
Feb. 14, 1989 |
| 4768598 |
Fluid pressure actuated bypass and pressure indicating relief valve |
Sep. 6, 1988 |
| 4721172 |
Apparatus for controlling the force applied to a drill bit while drilling |
Jan. 26, 1988 |
| 4714118 |
Technique for steering and monitoring the orientation of a powered underground boring device |
Dec. 22, 1987 |
| 4660656 |
Method and apparatus for controlling the rotational torque of a drill bit |
Apr. 28, 1987 |
| 4646277 |
Control for guiding a boring tool |
Feb. 24, 1987 |
| 4637479 |
Methods and apparatus for controlled directional drilling of boreholes |
Jan. 20, 1987 |
| 4632191 |
Steering system for percussion boring tools |
Dec. 30, 1986 |
|
|
|
