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Class Information
Number: 175/369
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Stub axle cutter securing means
Description: Apparatus in which the rolling cutter element is journaled on an axle or pin, supported at one end only in cantilever fashion and provided with a particular means to rotatably secure the rolling cutter element with respect to the axle or pin.










Sub-classes under this class:

Class Number Class Name Patents
175/370 Released by antifriction bearing disassembly 10


Patents under this class:

Patent Number Title Of Patent Date Issued
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
7621346 Hydrostatic bearing Nov. 24, 2009
7320375 Split cone bit Jan. 22, 2008
6254275 Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability Jul. 3, 2001
5961185 Shielded cutterhead with small rolling disc cutters Oct. 5, 1999
5626201 Disc cutter and method of replacing disc cutters May. 6, 1997
5586611 Drill bit having dual split bushings for cutter support and retention Dec. 24, 1996
5465800 Rolling cutter drill bits Nov. 14, 1995
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
4765205 Method of assembling drill bits and product assembled thereby Aug. 23, 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
4600064 Earth boring bit with bearing sleeve Jul. 15, 1986
4538928 Screw ring cone retention apparatus and method for rock bits Sep. 3, 1985
4511008 Rotary cutter drill bit with permanent snap ring cutter retention Apr. 16, 1985
4506997 Rock bit cone retention Mar. 26, 1985
4478299 Rock bit construction Oct. 23, 1984
4444518 Rock bit cone retention means Apr. 24, 1984
4344658 Earth boring drill bit with snap ring cutter retention Aug. 17, 1982
4236764 Earth boring drill bit with snap ring cutter retention Dec. 2, 1980
4176724 Rotary rock bit and method of making same Dec. 4, 1979
4172502 Roller bit Oct. 30, 1979
4157122 Rotary earth boring drill and method of assembly thereof Jun. 5, 1979
4127043 Rock bit with welded bearing pins Nov. 28, 1978
4043411 Rotary rock bit with the bearing pin fused to the rock bit arm Aug. 23, 1977











 
 
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