Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Zhou Yong0
Carlos Torres0
George B. Witman, IV0
Date of Patent
February 23, 2010
0Patent Application Number
116010290
Date Filed
November 17, 2006
0Patent Primary Examiner
Patent 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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