Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Eric Sullivan0
Don Q. Nguyen0
Terry J. Koltermann0
Scott S. Shu0
Aaron J. Dick0
Anton F. Zahradnik0
Date of Patent
July 12, 2011
0Patent Application Number
122383110
Date Filed
September 25, 2008
0Patent Primary Examiner
Patent abstract
An apparatus for retaining a roller cone on a bearing pin of a drill bit body that includes a drill bit body; a bearing pin coupled to the drill bit body; a retention member coupled to the bearing pin; a roller cone coupled to the retention member; and a torque transfer member coupled to the retention member and the roller cone adapted to selectively transfer torque between the retention member and the roller cone.
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