Bit or bit element > Rolling cutter bit or rolling cutter bit element > Detachable stub axle, bushing or bearing > Releasable cutter securing device > Patents

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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
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