Drill bit with covered ring nozzle retainer

Details Drill bit with covered ring nozzle retainer Drill bit with covered ring nozzle retainer

1986-11-26

1988-12-27

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175424, 239591, E21B 1018

Patent

active

047934263

ABSTRACT:
An improved nozzle retention system in an earth boring bit of the rolling cutter type using a pliable coating bonded to a nozzle retention snap ring in a manner to permit normal seating of the snap ring by bonding the coating only to the inner periphery and portion of a lower surface of the snap ring. The coating material disclosed is elastomeric, including nitrile rubber.

REFERENCES:
patent: 2868512 (1959-01-01), Sease
patent: 3052090 (1962-09-01), Herzog
patent: 3096834 (1963-07-01), Steen
patent: 3115200 (1963-12-01), Mandrell
patent: 4542798 (1985-09-01), Madigan

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