Rock bit bearing seal

Details Rock bit bearing seal Rock bit bearing seal

1974-12-16

1976-03-16

Makay, Albert J.

Cutlery

277 95, 277235R, 308 82, 308 361, F16C 3378

Patent

active

039443060

ABSTRACT:
A bearing seal for a rock bit, including a non-elastic annular core member and inner and outer flexible sealing rings each securely bonded to the core member throughout substantially its entire circumference, the core member providing dimensional stability for the sealing rings and hence extending the useful life of the bearing seal despite the elevated temperature and pressure levels to which it is subjected.

REFERENCES:
patent: 3137508 (1964-06-01), Cunningham
patent: 3370895 (1968-02-01), Cason, Jr.
patent: 3588201 (1971-06-01), Schmidt
patent: 3603602 (1971-09-01), Padula
patent: 3656764 (1972-04-01), Robinson
patent: 3862762 (1975-01-01), Millsap

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