E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/46 (2006.01) E21B 10/50 (2006.01)
Patent
CA 2571277
A cutting element is provided having a substrate and an ultra hard material cutting layer over the substrate. The cutting layer includes a surface portion for making contact with a material to be cut by the cutting element. The surface portion in cross- section has a curvature that has a varying radius of curvature. A bit incorporating such a cutting element is also provided.
Janssen Michael J.
Shen Yuelin
Zhang Youhe
Fetherstonhaugh & Co.
Smith International Inc.
LandOfFree
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