Drill bit reservoir with controllable relief pressure

Details Drill bit reservoir with controllable relief pressure Drill bit reservoir with controllable relief pressure

2006-11-17

2010-02-23

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

With storage means for bit lubricant carried by bit or shaft

With fluid pressure-actuated feed means

Reexamination Certificate

active

07665547

ABSTRACT:
A rotary rock bit includes a lubricant reservoir with a pressure compensation assembly disposed therein. The pressure compensation assembly is adapted to permit selective adjustment of the relief pressure set by the assembly through the selective adjustment of one member in the assembly with respect to another member in the assembly.

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