Patent ID: 6170478
Filing Date: 2001-01-09
Classification: B23D,B28D,Y10T

Abstract:
A process for cutting a chamfer along an edge of a cut formed at 90.degree. from a concrete wall surface using a wall saw assembly of the type including a track affixed to the concrete wall surface, said track guiding a trolley supporting a saw frame which holds a concrete saw motor and a 90.degree. blade which saw frame also holds a driven gear which meshes with a rack held by the track to move the trolley along the track, said process comprising:forming a cut through said concrete wall at a 90.degree. angle with respect to said concrete wall surface along one side of a desired opening;moving the 90.degree. blade so that it is above the wall surface;attaching a chamfer saw assembly to said frame, said chamfer saw assembly including a chamfer frame, a chamfer saw motor and a chamfer saw blade positioned at a desired chamfer angle with respect to said concrete wall surface and positioning the chamfer saw blade above the outer surface of the wall;turning on the chamfer saw motor to rotate the chamfer saw blade and moving the motor and blade in a chamfer saw blade plane into the concrete adjacent the 90.degree. cut; andmoving the saw frame along said track to cut a chamfer in the wall surface adjacent the 90.degree. cut.