Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David R. Hall0
Jeff Jepson0
Ronald Crockett0
Date of Patent
September 2, 2008
0Patent Application Number
114640190
Date Filed
August 11, 2006
0Patent Citations Received
Patent Primary Examiner
Patent abstract
In one aspect of the invention, a degradation assembly has an attack tool with a body and a shank, the body having a wear-resistant tip. The shank is disposed within a bore of a holder which is secured to a driving mechanism. A retainer sleeve is disposed around the shank of the attack tool, wherein the retainer sleeve has an inner surface with a hardness greater than 58 HRc.
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