Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 4, 2009
Patent Application Number
12037312
Date Filed
February 26, 2008
Patent Citations Received
0
Patent Primary Examiner
Patent abstract
A polycrystalline diamond cutting element for earth boring drill bits presents regions of different abrasion resistance to the earthen formation when in operation. The cutting element has an end working surface and a region which is substantially free of catalyzing material, forming a layer. In operation, this layer wears at a different rate than the underlying material causing a pair of protruding lips to form. The end working surface may be substantially planar or frusto-conical in form.
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