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Class Information
Number: 175/343
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Wobbling cutter
Description: Apparatus in which (1) the rolling cutter element is mounted on an axis which is spaced from, or inclined to the geometric axis of the cutter or cutting edge, or (2) in which the rolling cutter element is loosely held on its rotary supporting means so that it may continually shift laterally as it rolls.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7240745 |
Drill bit lubrication apparatus and method |
Jul. 10, 2007 |
| 7152701 |
Cutting element structure for roller cone bit |
Dec. 26, 2006 |
| 6892828 |
Nutating single cone drill bit |
May. 17, 2005 |
| 6439326 |
Centered-leg roller cone drill bit |
Aug. 27, 2002 |
| 5685381 |
Drill rod and drill bit with rocking connection |
Nov. 11, 1997 |
| 5671816 |
Swivel/tilting bit crown for earth-boring drills |
Sep. 30, 1997 |
| 5503236 |
Swivel/tilting bit crown for earth-boring drills |
Apr. 2, 1996 |
| 5190353 |
Rock cutting tool having eccentric drive |
Mar. 2, 1993 |
| 4936398 |
Rotary drilling device |
Jun. 26, 1990 |
| 4796713 |
Activated earth drill |
Jan. 10, 1989 |
| 4736987 |
Rock cutting assembly |
Apr. 12, 1988 |
| 4580642 |
Zero deviation drill bits |
Apr. 8, 1986 |
| 4463220 |
Drill bit for forming a fluid cushion between the side of the drill bit and the side wall of a bore hole |
Jul. 31, 1984 |
| 4372403 |
Eccentric rotary bit |
Feb. 8, 1983 |
| 4203496 |
Longitudinal axis roller drill bit with gage inserts protection |
May. 20, 1980 |
| 4168755 |
Nutating drill bit |
Sep. 25, 1979 |
| 4096917 |
Earth drilling knobby bit |
Jun. 27, 1978 |
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