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Class Information
Number: 384/96
Name: Bearings > Rotary bearing > Roller drill bit > Roller cone retaining means
Description: Subject matter including means to hold a roller cone on its supporting shaft.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8439134 Method and apparatus for a true geometry, durable rotating drill bit May. 14, 2013
8201646 Method and apparatus for a true geometry, durable rotating drill bit Jun. 19, 2012
7975779 Threaded cone retention system for roller cone bits Jul. 12, 2011
7465096 Earth boring bit with tilted hydrodynamic thrust bearing Dec. 16, 2008
6357540 Rotary drill bit with lip seal in roller cone bit Mar. 19, 2002
6179469 Rotation mechanism for rotating a ring Jan. 30, 2001
6170582 Rock bit cone retention system Jan. 9, 2001
5853245 Rock bit cutter retainer with differentially pitched threads Dec. 29, 1998
5429200 Rotary drill bit with improved cutter Jul. 4, 1995
5352045 Means of mounting a revolving cutting element Oct. 4, 1994
5199516 Modular drill bit Apr. 6, 1993
5137097 Modular drill bit Aug. 11, 1992
5092412 Earth boring bit with recessed roller bearing Mar. 3, 1992
5024539 Friction bearing and cone retention thrust system for a rock bit Jun. 18, 1991
4991671 Means for mounting a roller cutter on a drill bit Feb. 12, 1991
4911255 Means for retaining roller cutters on rotary drill bit Mar. 27, 1990
4900164 Axial retainer for a cutter in a rotary drill bit Feb. 13, 1990
4880068 Rotary drill bit locking mechanism Nov. 14, 1989
4874047 Method and apparatus for retaining roller cone of drill bit Oct. 17, 1989
4738323 Thrust bearing and cone locking assembly for rock drill bit Apr. 19, 1988
4730681 Rock bit cone lock and method Mar. 15, 1988
4722615 Drilling apparatus and cutter therefor Feb. 2, 1988
4666000 Rock bit cutter retainer May. 19, 1987
4657091 Drill bits with cone retention means Apr. 14, 1987
4625816 Boring drill bit Dec. 2, 1986
4600064 Earth boring bit with bearing sleeve Jul. 15, 1986
4596472 Thrust bearing and axial retainer system for rotary cone rock bits and method for assembling same Jun. 24, 1986
4538928 Screw ring cone retention apparatus and method for rock bits Sep. 3, 1985
4533003 Drilling apparatus and cutter therefor Aug. 6, 1985
4511008 Rotary cutter drill bit with permanent snap ring cutter retention Apr. 16, 1985
4506997 Rock bit cone retention Mar. 26, 1985
4499642 Composite bearing Feb. 19, 1985
4491428 Earth boring drill bit with snap ring cutter retention Jan. 1, 1985
4478299 Rock bit construction Oct. 23, 1984
4445791 Rotary drill bit ball plug May. 1, 1984
4444518 Rock bit cone retention means Apr. 24, 1984
4344658 Earth boring drill bit with snap ring cutter retention Aug. 17, 1982
4260203 Bearing structure for a rotary rock bit Apr. 7, 1981
4255000 Rotary drill bit Mar. 10, 1981
4236764 Earth boring drill bit with snap ring cutter retention Dec. 2, 1980
4220377 Earth boring bit with eccentrically machined bearing pin Sep. 2, 1980
4181377 Rock bit having an improved cone retention system Jan. 1, 1980
4161343 Cone retainer for a rotary rock bit Jul. 17, 1979
4145094 Rotary rock bit and method of making same Mar. 20, 1979
4102552 Tandem eccentric roller stabilizer for earth boring apparatus Jul. 25, 1978
4082373 Tandem roller stabilizer for earth boring apparatus Apr. 4, 1978
4080010 Tandem roller stabilizer for earth boring apparatus Mar. 21, 1978
4071285 Stabilizer Jan. 31, 1978
4059316 Bearing retaining pin for earth boring drill Nov. 22, 1977
4035039 Rock bit assembly Jul. 12, 1977

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