Rotary chisel
OwnerDonald G. Hinesinventor
Life of this patent
Estimating the term…
Abstract
A high-speed carbide rotary cutting tool designed for use in the carving, cutting and shaping of most materials including, but not limited to, wood, ferrous and non-ferrous metals, bone, stone, plastics and composites. It is designed for use in high-speed, hand-held rotary grinders, such as flex shaft hand pieces, die grinders, and other high-speed stationary grinding tools, primarily using 1/4 inch and 1/8 inch shaft sizes. The tool includes a triangular solid carbide cutting head shaped for cutting different profiles. The cutting head is brazed to a mandrel in such a manner as to render the tool one piece.
Claims6
A rotary chisel for use in a rotary power unit, said chisel comprising:
- (a) an elongated mandrel having first and second ends;
- (b) a triangularly shaped cutting head having three cutting points equidistantly spaced around the perimeter of said cutting head;
- wherein said cutting head is mounted on said first end of said mandrel;
- and wherein said cutting head is formed of three linear sides substantially equal in length, each side extending between a cutting point and a recessed area adjacent to another said cutting point.
A rotary cutting tool comprising:
- (a) a hand-held power unit;
- (b) an elongated mandrel having first and second ends;
- wherein said second end is connected to and rotatably driven by said power unit;
- (c) a triangularly shaped cutting head having three cutting points equidistantly spaced around the perimeter of said cutting head;
- wherein said cutting head is mounted on said first end of said mandrel;
- and wherein said cutting head is formed of three linear sides substantially equal in length, each side extending before a cutting point and a recessed area adjacent to another said cutting point.
A rotary cutting tool comprising:
- (a) a hand-held power unit;
- (b) an elongated mandrel having first and second ends;
- wherein said second end is connected to and rotatably driven by said power unit;
- (c) a triangularly shaped cutting head having at least three cutting points equidistantly spaced around the periphery of said cutting head;
- wherein said cutting head is mounted on said first end of said mandrel;
- and wherein said cutting head is formed of three linear sides substantially equal in length, each side extending between a cutting point and a recessed area adjacent to another said cutting point.
Dependencies are inferred from the claim text.