Drill bit bearing seal

Details Drill bit bearing seal Drill bit bearing seal

1987-01-28

1988-02-02

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

277 95, 277235R, E21B 1022

Patent

active

047224045

ABSTRACT:
The invention includes a low-friction seal assembly for use with a rotary drill bit having bit cutters manufactured by casting. The seal assembly includes a seal element having a bellville spring element surrounded by an elastomeric material. The seal element is secured for rotation with the bit cutter by pitted surfaces of a securing groove formed in the cutter, adhesive, and/or by roughening the surface of the bit cutter contacting the seal element.

REFERENCES:
patent: 3096835 (1963-07-01), Neilson
patent: 3137508 (1964-06-01), Cunningham
patent: 3199878 (1965-08-01), Cunningham et al.
patent: 3370895 (1968-02-01), Cason, Jr.
patent: 3381968 (1968-05-01), Neilson
patent: 3489421 (1970-01-01), Neilson
patent: 4330134 (1982-05-01), Kolinger
patent: 4359111 (1982-11-01), Gonzalez
patent: 4516641 (1985-05-01), Burr
patent: 4560175 (1985-12-01), Kar
patent: 4610452 (1986-09-01), DiRienz

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