Lube reservoir protection for rock bits

Details Lube reservoir protection for rock bits Lube reservoir protection for rock bits

1984-08-22

1986-05-27

Jillions, John M.

Boring or penetrating the earth

With storage means for bit lubricant carried by bit or shaft

175337, 175374, E21B 910, E21B 1022, E21B 1014

Patent

active

045910081

ABSTRACT:
This invention discloses a method to protect the lubrication reservoir system for sealed bearing rotary cone rock bits. A multiplicity of flush-type tungsten carbide inserts are positioned in each leg of the rock bit surrounding the lubrication reservoir cover cap. The inserts prevent erosion of the leg around the cover cap, thus protecting the snap ring that secures the cover cap within the reservoir chamber.

REFERENCES:
patent: 3130801 (1964-04-01), Schumacher, Jr.
patent: 3134447 (1964-05-01), McElya et al.
patent: 3513728 (1970-05-01), Hudson et al.
patent: 4055225 (1977-10-01), Millsapps
patent: 4140189 (1979-02-01), Garner
patent: 4343371 (1982-08-01), Baker, III et al.
patent: 4359113 (1982-11-01), Morris
patent: 4421184 (1983-12-01), Mullins

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