Patent ID: 7165636

Claim:
A cutting element comprising: a hard material body having an end surface symmetrical about a plane and a periphery defining a circumference, the end surface comprising a canted portion extending to the periphery and an uncanted portion extending to the periphery, wherein the canted portion intersects the periphery along a first periphery line and wherein the uncanted portion intersects the periphery along a second periphery line, wherein the second periphery line extends from one end of the first periphery line to another end of the first periphery line, wherein the entire canted portion when viewed in cross-section along the plane is defined by a continuously curving line; and an ultra hard material layer formed over the end surface having an exposed upper surface, said ultra hard material layer having a periphery and extending over both the canted and uncanted portions, wherein the ultra hard material layer comprises a thickness, wherein the thickness of the ultra hard material layer is maximum at a first location at the periphery of the ultra hard material layer at an intersection with the plane and wherein the thickness of the ultra hard material layer is minimum at a second location at the periphery of the ultra hard material layer at an intersection with the plane, wherein the second location is opposite the first location.