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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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