Patent ID: 6099209
Filing Date: 2000-08-08
Classification: B23B,Y10T

Abstract:
A cutting tool for sealing the surface of a porous workpiece and for removing material from the workpiece along a direction of feed of the cutting tool, wherein the cutting tool has a polygonal body of wear resistant material and comprises:(a) top and bottom surfaces and a peripheral wall therebetween; and(b) at least one corner region comprised of:(i) a compressing segment having a blunt edge defined at the intersection of the compressing segment with the top surface for imparting a force which is predominantly compressive upon a portion of the workpiece and producing on that compressed portion a non-porous surface layer having a depth; and(ii) a cutting segment located in a direction opposite the direction of feed from the compressing segment having an edge which protrudes at least to a blunt contact surface of the compressing segment for cutting the compressed portion to a depth less than that of the non-porous layer thereby retaining at least a portion of the non-porous surface layer.