Patent ID: 8783388

Claim:
A superabrasive insert comprising: a superabrasive layer bonded to a substrate at an interface, the superabrasive layer including an upper surface and a side surface; wherein a cross section of one half of the upper surface comprises: a centrally substantially planar surface, at least one arc extending radially outwardly from the centrally substantially planar surface, and at least one chamfer extending radially outwardly from the at least one arc, wherein the at least one chamfer is positioned between the at least one arc and the side surface, wherein the substantially planar surface is tangent to the at least one arc at an intersection between the at least one arc and the substantially planar surface; wherein the radially innermost point of the at least one arc and the radially outermost point of at least one chamfer exhibit a lateral extent and an extension depth, wherein a ratio of the lateral extent to the extension depth exceeds 1.0.