Hole cutter with minimum tooth pitch to blade body thickness ratio
AssigneeIrwin Industrial Tool Company
InventorsCharles E. Kalomeris, Joseph Thomas Novak, William B. Korb, Christopher F. Fitzgerald
Life of this patent
Estimating the term…
Abstract
A hole cutter for cutting a work piece, such as a wood and/or metal work piece, has a substantially cylindrical blade body defining a wall thickness within the range of about 0.032 inch to about 0.038 inch, and a cutting edge formed on one end of the blade body including a plurality of teeth defining an average tooth pitch within the range of about 3.5 TPI to about 5.5 TPI for cutting the work piece and forming chips therefrom. The substantially cylindrical blade body and cutting edge define an average tooth pitch to blade body thickness ratio of at least about 110.
Claims23
A tool, comprising:
- a hole cutter configured for cutting at least one of a wood or metal work piece, including
- a substantially cylindrical blade body defining a wall thickness greater than about 0.032 inch and less than 0.038 inch;
- and
- a cutting edge formed on one end of the blade body including a plurality of teeth defining an average tooth pitch within a range of about 3.5 TPI to about 5.5 TPI configured for cutting the work piece, which can be wood or metal and forming chips therefrom,
- wherein the substantially cylindrical blade body and the cutting edge define an average tooth pitch to blade body thickness ratio of at least about 110.
A tool, comprising:
- a hole cutter configured for cutting at least one of a wood or metal work piece, including
- a substantially cylindrical blade body defining a wall thickness greater than about 0.032 inch and less than 0.038 inch;
- a cutting edge formed on one end of the blade body;
- and
- at least one means formed within the blade body for receiving chips flowing from the cutting edge within an interior of the blade body and at least one of (i) into said means, and (ii) through said means, and for preventing a collection of the chips within at least one of the interior of the blade body and an interface between the blade body and work piece,
- wherein the cutting edge includes a plurality of teeth defining an average tooth pitch within a range of about 3.5 TPI to about 5.5 TPI that are configured for cutting the work piece, which can be wood or metal and forming the chips therefrom, and the substantially cylindrical blade and cutting edge define an average tooth pitch to blade body thickness ratio of at least about 110.
Dependencies are inferred from the claim text.