Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
August 16, 2011
Patent Application Number
11773271
Date Filed
July 3, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
In one aspect of the present invention, a high impact resistant excavation pick having a super hard material is bonded to a cemented metal carbide substrate at a non-planar interface. The cemented metal carbide substrate is bonded to a front end of a cemented metal carbide frustum. A tapered bore is formed in the base end of the carbide frustum opposite the front end and a steel shank with a tapered interface is fitted into the tapered bore.
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