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Class Information
Number: 175/366
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Separable support for stub axle
Description: Apparatus in which the rolling cutter element is journaled on an axle or pin supported at one end only in cantilever fashion on an arm, leg or bracket which is removably connected to the rest of the bit head by a means which is readily detachable.










Patents under this class:

Patent Number Title Of Patent Date Issued
8356398 Modular hybrid drill bit Jan. 22, 2013
8201646 Method and apparatus for a true geometry, durable rotating drill bit Jun. 19, 2012
7367412 Collapsible rock head May. 6, 2008
7140454 Well drilling bit Nov. 28, 2006
6742608 Rotary mine drilling bit for making blast holes Jun. 1, 2004
6568490 Method and apparatus for fabricating rotary cone drill bits May. 27, 2003
6109375 Method and apparatus for fabricating rotary cone drill bits Aug. 29, 2000
5641029 Rotary cone drill bit modular arm Jun. 24, 1997
5624002 Rotary drill bit Apr. 29, 1997
5560440 Bit for subterranean drilling fabricated from separately-formed major components Oct. 1, 1996
5199516 Modular drill bit Apr. 6, 1993
4630693 Rotary cutter assembly Dec. 23, 1986
4369849 Large diameter oil well drilling bit Jan. 25, 1983
4359114 Raise drill bit inboard cutter assembly Nov. 16, 1982
4335794 Rotary cone cutter Jun. 22, 1982
4266622 Rotary rock bit and method of making same May. 12, 1981
4158973 Rolling cutter drill bit Jun. 26, 1979
4084649 Rock bit Apr. 18, 1978











 
 
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