Coated hole cutter
AssigneeIrwin Industrial Tool Company
InventorsRobert Richard Zielonka, Joseph H. DeSantis, Christopher F. Fitzgerald, Peter Weremchuk
Life of this patent
Estimating the term…
Abstract
A coated hole cutter including an ink-based colored coating applied only to the external surface of the cylindrical blade body of the hole cutter, but not to the surfaces of a circumferentially-extending cutting edge or to the interior surface of the blade body. The ink-based color coating is an ultraviolet activated ink that cures when the coating is exposed to a specific ultraviolet light intensity and wavelength. At least the surfaces of the cutting edge and the internal surface of the blade body, which do not include the coating, have a steam tempered oxide finish that imparts a color that contrasts with the color imparted by the coating.
Claims33
A hole cutter defining an axis of rotation for cutting a work piece and generating chips upon cutting the work piece, comprising:
- a substantially cylindrical blade body extending about the axis of rotation, a cap located at one end of the blade body, and
- a cutting edge located at an opposite end of the blade body relative to the cap,
- wherein the blade body defines a flat substantially cylindrical exterior surface extending from the one end of the blade body to the cutting edge and a substantially cylindrical interior surface, the cap defines exterior and interior surfaces, the cutting edge defines exterior and interior surfaces, and the interior surface of the blade body extends from the cap to the interior surface of the cutting edge,
- the blade body defines a heat resistant non-metallic coating defining a colored band disposed on and extending axially and annularly throughout a substantial portion of the flat exterior cylindrical surface of the blade body and axially spaced from the cutting edge a first distance, wherein the heat resistant non-metallic coating does not soften when subjected to frictional forces encountered by the flat exterior cylindrical surface during cutting,
- the flat exterior surface of the cutting edge defines a metallic finish forming a metallic band extending about the periphery of the blade body at the cutting edge, extending axially between the cutting edge and the heat resistant non-metallic colored coating band, and contrasting in color with the heat resistant non-metallic colored coating band,
- the interior surfaces of the cylindrical blade body and cutting edge define a metallic finish, and the metallic finish maintains the interfaces between the exterior and interior surfaces of the cutting edge, and the interior surface of the blade body, and a work piece, substantially free of any coating that softens and mixes with the chips generated upon cutting the work piece.
A hole cutter defining an axis of rotation for cutting a work piece and generating chips upon cutting the work piece, comprising:
- a substantially cylindrical blade body extending about the axis of rotation, a cap located at one end of the blade body, and
- a cutting edge located at an opposite end of the blade body relative to the cap,
- wherein the blade body defines a flat substantially cylindrical exterior surface extending from the one end of the blade body to the cutting edge and a substantially cylindrical interior surface, the cap defines exterior and interior surfaces, the cutting edge defines exterior and interior surfaces, and the interior surface of the blade body extends from the cap to the interior surface of the cutting edge,
- the blade body defines a first heat resistant non-metallic means for decorating the hole cutter and for receiving thereon at least one of a trademark, logo, manufacturer identification or part number axially spaced from the cutting edge and extending axially and annularly throughout a substantial portion of the flat exterior cylindrical surface of the blade body wherein the heat resistant non-metallic means does not soften when subjected to frictional forces encountered by the flat exterior cylindrical surface during cutting, and
- a second metallic means contrasting in color with the first heat resistant non-metallic means, extending about the periphery of the blade body at the exterior and interior surfaces of the cutting edge, extending axially between the cutting edge and the first heat resistant non-metallic means, and extending axially and annularly throughout a substantial portion of the interior cylindrical surface of the blade body, for maintaining the interfaces between the exterior and interior surfaces of the cutting edge, and the interior surface of the blade body, and a work piece, substantially free of any coating that softens and mixes with the chips generated upon cutting the work piece.
Dependencies are inferred from the claim text.