Patent ID: 7757789

Claim:
A cutter element for insertion in a drill bit comprising: a substrate body comprising abuse portion with a central axis and a cutting portion extending from the base portion, wherein the base portion has a cylindrical outer surface disposed at a radius R relative to the central axis; wherein the cutting portion includes an interface surface distal the base portion and a flanking surface disposed at the radius R relative to the central axis and extending from the outer surface of the base to the interface surface, wherein the flanking surface intersects the interface surface at an intersection that undulates about the circumference of the substrate body; wherein said interface surface includes a peak region, at least three blades radiating away from said peak region, and valleys between said blades, said peak region, said blades and said valleys forming a pattern of contours on said interface surface; at least one layer of superabrasive material on said substrate body, said layer having an inner surface engaging said substrate interface surface and an outer surface forming a cutting surface; wherein said cutting surface comprising blades and valleys corresponding to said contours of said interface surface; wherein each blade extends from the peak region to the flanking surface; wherein each blade has an axial length measured parallel to the central axis from the flanking surface to the peak region, and the superabrasive material has an axial thickness measured parallel to the central axis; wherein the axial length of each blade is greater than the axial thickness of the superabrasive material.