Patent ID: 8353278
Filing Date: 2013-01-15
Classification: B28D,Y10T

Abstract:
1. A rotary stone cutting tool for making countertops and the like, comprising: a rigid cutting tool shank having an outer end thereof, and an inner end thereof configured for detachably mounting in a rotary drive; a flat circularly-shaped saw blade operably connected with said shank for rotation therewith, and configured to make mutually angled straight cuts through a generally flat face of a stationary stone slab when said stone cutting tool is in a first angular position to define straight portions of an inside corner in the stone slab; and a cup-shaped cutting blade fixedly connected with said outer end of said shank for rotation therewith, configured to make an arcuate cut through the stone slab when said stone cutting tool is in a second angular position, and having: a frusto-conical sidewall which is inclined radially outwardly from said shank and includes an outer marginal edge with a plurality of axially protruding cutting teeth; and a plurality of cutting pads embedded in said sidewall and protruding radially outwardly therefrom, whereby said stone cutting tool is advanced into and through the stone slab in said second angular position with said sidewall oriented generally perpendicular to the face of the stone slab to cut an arcuate portion of the inside corner therein with reduced waste.