Wheel attachment for portable power cutting tools

A wheel attachment apparatus for a portable power cutting tool having a cutting blade driven by a power unit 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 cutting tool during a cutting process, the wheel attachment apparatus comprising:

• a. at least one wheel mounting piece for supporting a set of roller wheels;
• b. means for mounting said at least one wheel mounting piece to said bottom plate;
• c. said at least one wheel mounting piece having a mounting portion fixedly attached to said bottom plate by said mounting means, and at least two outward extending arms;
• d. means for mounting said set wheels to said outward extending arms where a respective one of said set of wheels is pivotally mounted to each outward extending arm of said at least one wheel mounting piece, such that when said cutting tool 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 power tool 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 cutting blade as said power unit so that they are always rolling on said remaining portion of said workpiece to ensure that said power tool 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.

A wheel attachment apparatus for a portable circular saw having a circular blade driven by a motor for cutting a workpiece into a cut-off portion and a remaining portion during a cutting process, the wheel attachment apparatus comprising:

• a. a flat bottom plate attached to said circular saw and to be placed above said working piece to support said circular saw during said cutting process, and having a slot opening to allow said circular blade of said circular saw to pass through for cutting said workpiece under the bottom plate;
• b. means for attaching a set of roller wheels to said bottom plate 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
• c. said wheels positioned and aligned in a way such that they are all on the same side of said circular blade as said remaining portion of said workpiece 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.