Mechanical face seal for rock bits

Details Mechanical face seal for rock bits Mechanical face seal for rock bits

1988-03-31

1989-04-25

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 92, 277 962, 277236, F16J 1538

Patent

active

048241237

ABSTRACT:
A metal-to-metal seal for a rotary cone rock bit consists of pre-lapped metal sealing surfaces formed on opposing seal rings prior to assembly of the seal rings into seal cavities formed between the rotary cones and their respective journal bearings. A first seal ring is fabricated from a softer metallic material than its opposing second metallic ring and the second ring has more seal surface area than the first ring to accommodate for cone wobble or eccentricities that may occur during operation of the bit in a borehole.

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patent: 4666001 (1987-05-01), Burr

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