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Class Information
Number: 175/260
Name: Boring or penetrating the earth > Tool removable or insertable through or around driving or driven shaft or casing > Laterally shiftable cutter element movable through shaft > Cutter element engages torque transmitting abutment on shaft when expanded
Description: Apparatus in which the shaft has an element or portion having a surface which extends substantially longitudinally and radially of the shaft and which is engaged by a portion of the cutter element so that rotary motion about the shaft axis may be transmitted from the shaft to the cutter element or from the cutter element to the shaft.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6206114 |
Tool for transporting cutting means to and from a ground drill |
Mar. 27, 2001 |
| 6059053 |
Retraction system for a latching mechanism of a tool |
May. 9, 2000 |
| 5009271 |
Drill assembly |
Apr. 23, 1991 |
| 5009274 |
Laterally adjustable drilling tool |
Apr. 23, 1991 |
| 4878549 |
Wire line core barrel |
Nov. 7, 1989 |
| 4651837 |
Downhole retrievable drill bit |
Mar. 24, 1987 |
| 4550788 |
Roof bolt hole groover |
Nov. 5, 1985 |
| 4497382 |
Retractable core drill bit |
Feb. 5, 1985 |
| 4470470 |
Boring apparatus |
Sep. 11, 1984 |
| 4384627 |
Retractable well drilling bit |
May. 24, 1983 |
| 4281722 |
Retractable bit system |
Aug. 4, 1981 |
| 3965996 |
Means and method of drilling wells |
Jun. 29, 1976 |
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