Patent ID: 8286624
Filing Date: 2012-10-16
Classification: B23D,B24D,B28D,Y10T

Abstract:
1. A blade ring saw blade for making straight and curved cuts in hard workpieces, the blade comprising: an annular body having an outer peripheral edge, an inner peripheral edge defining a large central opening for relative movement of the workpieces through the blade during making of curved cuts, a portion of reduced thickness forming a rib extending outwardly from the outer peripheral edge around the body, and substantially flat sides that are substantially wider than the thickness of the edges, the substantially flat sides extending generally radially for providing increased radial strength to the blade to enable driving the blade at high speeds through the workpieces; and an abrasive coating extending around the outer peripheral edge of the body and forming an outer peripheral cutting element for the blade for making the curved and straight cuts in the workpieces, the abrasive coating further covering the flat sides and inner peripheral edge of the body to form an inner peripheral cutting element for finishing curved cuts in the workpieces and providing smoother action as well as for cutting reversely, the inner peripheral edge and the coating thereon defining an open central portion of the blade permitting the workpieces to be turned relative to the blade to make the curved cuts.