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Class Information
Number: 175/368
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Detachable stub axle, bushing or bearing > Releasable cutter securing device
Description: Apparatus in which means are provided to secure the cutter element to the removable axle, pin, bushing or bearing and which is releasable to free the cutter element after the removal of the axle, pin, bushing or bearing.

Patents under this class:

Patent Number Title Of Patent Date Issued
8011456 Rotationally indexable cutting elements and drill bits therefor Sep. 6, 2011
7942217 Cutting apparatus for a microtunnelling system May. 17, 2011
7823657 Drilling assembly, drilling reamer arm assembly, and methods of drilling Nov. 2, 2010
7017683 Cutter for tunnel boring machine Mar. 28, 2006
6742608 Rotary mine drilling bit for making blast holes Jun. 1, 2004
6170582 Rock bit cone retention system Jan. 9, 2001
5465800 Rolling cutter drill bits Nov. 14, 1995
5137097 Modular drill bit Aug. 11, 1992
4911255 Means for retaining roller cutters on rotary drill bit Mar. 27, 1990
4865137 Drilling apparatus and cutter Sep. 12, 1989
4600064 Earth boring bit with bearing sleeve Jul. 15, 1986

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