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Class Information
Number: 175/356
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Circumferentially displaced cutter axes > Stub axle only
Description: Apparatus in which all of the cutter elements are journaled on a separate axle or pin supported at one end only in cantilever fashion.










Patents under this class:

Patent Number Title Of Patent Date Issued
5996713 Rolling cutter bit with improved rotational stabilization Dec. 7, 1999
5641029 Rotary cone drill bit modular arm Jun. 24, 1997
5624002 Rotary drill bit Apr. 29, 1997
5586612 Roller cone bit with positive and negative offset and smooth running configuration Dec. 24, 1996
5439068 Modular rotary drill bit Aug. 8, 1995
4984643 Anti-balling earth boring bit Jan. 15, 1991
4727943 Rotary drill bit Mar. 1, 1988
RE32495 Chip relief for rock bits Sep. 8, 1987
4623027 Unsegmented rotary rock bit structure and hydraulic fitting Nov. 18, 1986
4513829 Chip relief for rock bits Apr. 30, 1985
4417629 Drill bit and method of manufacture Nov. 29, 1983
4369849 Large diameter oil well drilling bit Jan. 25, 1983











 
 
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