Sealing system for a rotary rock bit

Details Sealing system for a rotary rock bit Sealing system for a rotary rock bit

1976-11-01

1978-02-14

Blix, Trygve M.

Cutlery

175228, 308 361, 3081871, F16C 3376

Patent

active

040735486

ABSTRACT:
A sealing system acts as a barrier to the drilling fluid, pulverized cuttings and other materials in the borehole to prevent the materials from entering the bearing area of a rotary rock bit. The bit body and the base of the cone cutter cooperate to retain the seal unit. The seal is located in a groove and an effective seal is provided without reducing the bearing capacity of the bit's bearing system. The sealing system allows excessive pressures in the lubricant to be relieved.

REFERENCES:
patent: 3735825 (1973-05-01), Keller
patent: 3761145 (1973-09-01), Schumacher, Jr.
patent: 3944306 (1976-03-01), Neilson

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