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Class Information
Number: 175/27
Name: Boring or penetrating the earth > Automatic control > Of advance or applied tool weight
Description: Subject matter in which a sensed condition of operation controls a power operated means to initiate, modify, or terminate the advance or axial pressure of a tool upon the formation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5960895 |
Apparatus for providing a thrust force to an elongate body in a borehole |
Oct. 5, 1999 |
| 5944121 |
Apparatus and method for controlling an underground boring machine |
Aug. 31, 1999 |
| 5941320 |
Directional boring machine |
Aug. 24, 1999 |
| 5927408 |
Head brake release with memory and method of controlling a drill head |
Jul. 27, 1999 |
| 5913371 |
Apparatus for controlling the feed drive of a boring mechanism for making earth bores |
Jun. 22, 1999 |
| 5806611 |
Device for controlling weight on bit of a drilling assembly |
Sep. 15, 1998 |
| 5778990 |
Arrangement in a hydraulically operated rock drilling equipment |
Jul. 14, 1998 |
| 5746278 |
Apparatus and method for controlling an underground boring machine |
May. 5, 1998 |
| 5720355 |
Drill bit instrumentation and method for controlling drilling or core-drilling |
Feb. 24, 1998 |
| 5713422 |
Apparatus and method for drilling boreholes |
Feb. 3, 1998 |
| 5704436 |
Method of regulating drilling conditions applied to a well bit |
Jan. 6, 1998 |
| 5507353 |
Method and system for controlling the rotary speed stability of a drill bit |
Apr. 16, 1996 |
| 5501285 |
Method for controlling the head of a drilling or core-drilling device and apparatus for carrying out this method |
Mar. 26, 1996 |
| 5497838 |
Automated rock burner |
Mar. 12, 1996 |
| 5476148 |
Tool for maintaining wellbore penetration |
Dec. 19, 1995 |
| 5474142 |
Automatic drilling system |
Dec. 12, 1995 |
| 5465798 |
Drill automation control system |
Nov. 14, 1995 |
| 5458207 |
Method and an equipment for adjusting rock drilling |
Oct. 17, 1995 |
| 5449047 |
Automatic control of drilling system |
Sep. 12, 1995 |
| 5419405 |
System for controlled drilling of boreholes along planned profile |
May. 30, 1995 |
| 5388649 |
Drilling equipment and a method for regulating its penetration |
Feb. 14, 1995 |
| 5358058 |
Drill automation control system |
Oct. 25, 1994 |
| 5348106 |
Method of drilling a hole in a rock |
Sep. 20, 1994 |
| 5343963 |
Method and apparatus for providing controlled force transference to a wellbore tool |
Sep. 6, 1994 |
| 5341886 |
System for controlled drilling of boreholes along planned profile |
Aug. 30, 1994 |
| 5310249 |
Method and apparatus for automatically controlling a mining machine |
May. 10, 1994 |
| 5220963 |
System for controlled drilling of boreholes along planned profile |
Jun. 22, 1993 |
| 5207281 |
Drill rate calculator |
May. 4, 1993 |
| 5186264 |
Device for guiding a drilling tool into a well and for exerting thereon a hydraulic force |
Feb. 16, 1993 |
| 5174387 |
Method and apparatus for adapting the operational behavior of a percussion mechanism to the hardness of material that is being pounded by the percussion mechanism |
Dec. 29, 1992 |
| 5131475 |
System for controlling drilling force of a telescoping rock drill |
Jul. 21, 1992 |
| 5129464 |
System for controlling a rock drill |
Jul. 14, 1992 |
| 5107937 |
Automated rock burner |
Apr. 28, 1992 |
| 4995465 |
Rotary drillstring guidance by feedrate oscillation |
Feb. 26, 1991 |
| 4976321 |
Horizontal earth boring machine and method |
Dec. 11, 1990 |
| 4971158 |
Method in rotary drilling and rotary drilling apparatus |
Nov. 20, 1990 |
| 4962817 |
Active reference system |
Oct. 16, 1990 |
| 4898251 |
Earth boring apparatus |
Feb. 6, 1990 |
| 4875530 |
Automatic drilling system |
Oct. 24, 1989 |
| 4865393 |
Method and apparatus for braking a derrick winch |
Sep. 12, 1989 |
| 4854397 |
System for directional drilling and related method of use |
Aug. 8, 1989 |
| 4852665 |
Method for monitoring the operations of the rotary drilling of a well |
Aug. 1, 1989 |
| 4848485 |
Method of and an arrangement for controlling rock drilling |
Jul. 18, 1989 |
| 4839936 |
Automated sewer cleaning rodding machine |
Jun. 20, 1989 |
| 4793421 |
Programmed automatic drill control |
Dec. 27, 1988 |
| 4756188 |
Method and apparatus for compensating for drilling line stretch in determining equipment depth in a well and for measurement of hookload on the traveling block of a drilling rig |
Jul. 12, 1988 |
| 4721172 |
Apparatus for controlling the force applied to a drill bit while drilling |
Jan. 26, 1988 |
| 4671366 |
Method for optimizing rock drilling |
Jun. 9, 1987 |
| 4662458 |
Method and apparatus for bottom hole measurement |
May. 5, 1987 |
| 4662608 |
Automatic drilling control system |
May. 5, 1987 |
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