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Class Information
Number: 175/90
Name: Boring or penetrating the earth > Tool element or continuously driven flexible or articulated endless member > Flexible or articulated member carried on support swingable or laterally movable relative to bore axis
Description: Apparatus in which a flexible or articulated member is carried on a support which is adapted to move all or a portion of said member radially relative to the axis of the bore to undercut or slot the wall of the borehole.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8640792 |
Flexible directional drilling apparatus and related methods |
Feb. 4, 2014 |
| 8362915 |
System and method for determining stretch or compression of a drill string |
Jan. 29, 2013 |
| 7866407 |
Method for construction of low thermal expansion and low resistance wire for logging applications |
Jan. 11, 2011 |
| 7383890 |
Universal rig with vertical stand for tubulars |
Jun. 10, 2008 |
| 7363989 |
Device for a pulling tool for use in pipes and boreholes for the production of oil and gas |
Apr. 29, 2008 |
| 7156192 |
Open hole tractor with tracks |
Jan. 2, 2007 |
| 6880649 |
Apparatus and method for directional drilling of holes |
Apr. 19, 2005 |
| 6135215 |
Tool string apparatus for lateral borehole formation |
Oct. 24, 2000 |
| 6024166 |
Apparatus for forming a slot in a wellbore |
Feb. 15, 2000 |
| 5984025 |
Drill pipe tong retaining apparatus |
Nov. 16, 1999 |
| 5279373 |
Controllable drill head |
Jan. 18, 1994 |
| 4624326 |
Process and apparatus for cutting rock |
Nov. 25, 1986 |
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