Patent ID: 9051794
Filing Date: 2015-06-09
Classification: B24D,E21B,E21C

Abstract:
1. A high impact resistant tool, comprising: a body formed of sintered particles, said body having a central axis, a base surface, and a working surface with a rim spaced apart from said central axis; and a substrate having a base end and an interface surface spaced apart from said base end and abutting said base surface to form a non-planar interface, said interface surface having a plurality of adjacent faces arranged circumferentially about said central axis with an angle between said working surface and each face of said plurality of faces of 30 degrees to 60 degrees and a distance from said rim to each face of said plurality of faces from about 0.100 inch to about 0.500 inch; where each face of said plurality of faces has a rounded junction between an adjacent face of said plurality of faces, said rounded junction having a radius of curvature from about 0.060 inch to about 0.140 inch.