Knife blade edge serrations and method therefor
AssigneeWisconsin Alumni Research Foundation
InventorsJustin D. Morrow, Frank E. Pfefferkorn
Life of this patent
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Abstract
Various aspects of the present disclosure are directed toward blades having serrations, and methods for forming the serrations. As may be implemented in accordance with one or more embodiments, laser light is scanned across a surface of a knife blade in which the laser light is intersected with an edge thereof. The laser light is used to serrate the edge of the knife blade by generating heat in the knife blade while the laser light is scanned, melting portions of the knife blade at serration regions at the edge, and removing the melted portions. This approach may be carried out without registering an accurate location of the knife edge, and while also melting portions of the knife blade away from the edge.
Claims20
A method comprising:
- scanning laser light across a surface of a knife blade, and intersecting the laser light with an edge of the knife blade;
- and
- utilizing the laser light to serrate the edge of the knife blade by:
- generating heat in the knife blade while the laser light is scanned,
- melting portions of the knife blade at serration regions at the edge, and
- removing the melted portions.
A knife blade apparatus comprising:
- an edge portion having a plurality of serrations;
- and
- a plurality of recrystallized scan regions extending from the serrations in scan lines along a surface of the knife blade, each recrystallized scan region including metal recrystallized from portions of the knife blade along the scan lines and extending to a depth below the surface.
Dependencies are inferred from the claim text.