Patent ID: 6568088
Filing Date: 2003-05-27
Classification: B23D,B27B

Abstract:
A wheel attachment apparatus for a portable power circular saw having a circular blade driven by a motor for cutting a workpiece into a cut-off portion and a remaining portion, and a bottom plate to be placed above the working piece to support the circular saw during a cutting process, the wheel attachment apparatus comprising:a. a pair of wheel mounting pieces for supporting a set of roller wheels; b. means for mounting said pair of wheel mounting pieces to said bottom plate at spaced apart and opposite locations; c. said pair of wheel mounting pieces each having a flat mounting portion fixedly attached to said bottom plate by said-mounting means, and two outward extending parallel arms each having an upwardly bent end portion with two opposite downward extending wheel axle supporting members; d. means for mounting said set wheels to said pair of wheel mounting pieces where a respective one of said set of wheels is pivotally mounted between said two opposite wheel axle supporting members of each outward extending arm of each said wheel mounting piece, such that when said circular saw is used to cut said workpiece, said set of wheels is brought into contact with said workpiece and elevates said bottom plate so that there is no contact between said bottom plate and said workpiece and instead said wheels are rolling on said workpiece to reduce any friction between said bottom plate and said workpiece and ease the movement of said circular saw during said cutting process; and e. said wheels positioned and aligned in a way such that they are all on the same side of said circular blade as said motor so that they are always rolling on said remaining portion of said workpiece to ensure that said circular saw is always firmly supported by said remaining portion throughout said cutting process, even when said cut-off portion becomes lose and separated from said remaining portion of said workpiece.