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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
7658244 Device for advancing drillings in the ground Feb. 9, 2010
7562726 Device for drilling a bore in the ground Jul. 21, 2009
7464773 Enhanced drill bit lubrication apparatus and method Dec. 16, 2008
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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