Reciprocating cutting blade having laser-hardened cutting edges and a method for making the same with a laser
AssigneeFisher Barton, Inc.
InventorsRichard L. Wilkey, Darrel Lee Turner
Life of this patent
Estimating the term…
Abstract
A reciprocating cutting blade includes a body portion having an top surface, a bottom surface, a longitudinal axis, a first working portion extending at an angle to the longitudinal axis and defining a first cutting surface, a second working portion extending at an angle to the longitudinal axis and defining a second cutting surface. A laser-hardened region extends along at least part of one of the first and second working portions, and preferably along at least part of both of the first and second working portions. The working portions can be serrated to include alternating teeth and roots. The teeth can be laser hardened more than the roots.
Claims25
A reciprocating cutting blade comprising:
- a body portion having an top surface, a bottom surface, a longitudinal axis, a first working portion extending at an angle to the longitudinal axis and defining a first cutting surface, a second working portion extending at an angle to the longitudinal axis and defining a second cutting surface, and a laser-hardened region extending along at least part of one of the first and second working portions.
A method of manufacturing a reciprocating cutting blade defining a longitudinal axis, the method comprising:
- providing a cutting blade having a first working portion extending at an angle to the longitudinal axis and a second working portion extending at an angle to the longitudinal axis;
- heat treating the first and second working portions;
- and
- exposing a region of at least one of the heat-treated first working portion and the heat-treated second working portion to a beam of laser radiation such that the exposed region is laser hardened.
Dependencies are inferred from the claim text.