Patent ID: 7066694
Filing Date: 2006-06-27
Classification: B23B,B28D,Y10S,Y10T

Abstract:
1. A cutting plate comprising: a working end for engaging a workpiece; an axis of rotation; a pair of oppositely arranged first faces inclined axially rearward from the working end in an axial plane intersecting said first faces, said first faces intersecting to form a chisel edge; a pair of second faces alternately arranged between the first faces, wherein the second faces are inclined axially rearward from the working end in an axial plane intersecting said second faces; and a pair of axis parallel front faces, each of the front faces is bound on three sides by a respective first face and said pair of second faces, each second face is inclined radially inward from a transitional edge with a respective rotationally leading first face in a plane normal to the axis intersecting said transitional edge with a respective rotationally leading first face, and each first face is inclined radially inward from a transitional edge with a respective rotationally leading second face in a plane normal to the axis intersecting said transitional edge with a respective rotationally leading second face, as the cutting plate rotates for cutting holes in ceramic material.