Thrust face bearing structure for rolling cutter drill bit

Details Thrust face bearing structure for rolling cutter drill bit Thrust face bearing structure for rolling cutter drill bit

1980-10-17

1982-04-06

Footland, Lenard A.

Cutlery

308DIG8, F16C 1712

Patent

active

043232841

ABSTRACT:
A rolling cutter drill bit is disclosed having an improved thrust face bearing structure which utilizes alternating segments of at least two different bearing metals. The composite thrust face bearing structure disclosed has a first metal selected for a low temperature operation, and at least one additional metal selected for high temperature operation.

REFERENCES:
patent: 4210371 (1980-07-01), Gerkema et al.
patent: 4220377 (1980-09-01), Phelps
patent: 4232912 (1980-11-01), Williamson
patent: 4260203 (1981-04-01), Garner

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