Patent ID: 7841092
Filing Date: 2010-11-30
Classification: B27B,Y10T

Abstract:
1. An attachment for a hand-held circular saw, the attachment being adapted for making square cuts on a workpiece that has at least one straight front edge, comprising: (a) at least two elongated pins which are slip fitted into holes located about a blade diameter from the front edge of the saw which when fully extended, protrude downwardly from the saw's base, the longitudinal centerline of each pin lying in an imaginary plane which is disposed parallel to the axis of rotation of the saw blade; (b) means for temporarily holding the saw blade above the workpiece so that the saw's base, while resting on the workpiece, can be positioned in such a way that side walls of both pins simultaneously abut said front edge; (c) means for lowering the saw blade by overcoming said means for temporarily holding it by pushing downwardly on the handle of the saw, so that the saw blade is brought into contact with the workpiece and the saw is further lowered to cut it; and (d) a means for automatically retracting the pins as the saw is lowered so that when the saw's blade is substantially at its full depth of cut, the pins are retracted and the saw can be moved forward if a wider cut in the workpiece is required.