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Class Information
Number: 175/370
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > Stub axle cutter securing means > Released by antifriction bearing disassembly
Description: Apparatus in which the rolling cutter element is journaled on the axle or pin by a bearing having rolling elements which may be removed from their races to provided for removal of the rolling cutter element.










Patents under this class:

Patent Number Title Of Patent Date Issued
7240745 Drill bit lubrication apparatus and method Jul. 10, 2007
5199516 Modular drill bit Apr. 6, 1993
5137097 Modular drill bit Aug. 11, 1992
4865137 Drilling apparatus and cutter Sep. 12, 1989
4445791 Rotary drill bit ball plug May. 1, 1984
4367904 Rotary drill bit with conical rotary cutters Jan. 11, 1983
4263976 Rotary drill bit with rotary cutters Apr. 28, 1981
4258806 Rotary drill bit with rotary cutters Mar. 31, 1981
4154312 Drill bit with single cutting head May. 15, 1979
4150728 Rock drill bit inserts with hollow bases Apr. 24, 1979











 
 
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