Patent ID: 8973687
Filing Date: 2015-03-10
Classification: B22F,E21B,Y10T

Abstract:
1. A cutting element, comprising: a substrate having a central axis, wherein an exposed lateral side surface of the substrate is reflectively and rotationally asymmetric with respect to all axes and planes intersecting with the substrate; a polycrystalline table attached to the substrate at an interface region at an end of the polycrystalline table; and an interface feature, the interface feature comprising a plurality of radially extending spokes that are reflectively asymmetric about at least two planes defined by x, y, and z axes of a Cartesian coordinate system defined to align a z axis of the coordinate system with the central axis of the substrate and to locate a center of the coordinate system at a midpoint along an axial height of the interface feature, the plurality of radially extending spokes being rotationally asymmetric about at least the central axis of the substrate.