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US 4,891,885 AGranted
Method of making a knife having a scalloped cutting edge
AssigneeUrschel Laboratories, Inc.
InventorsRobert R. Fischer, W. James Fischer
Life of this patent
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Abstract
A scalloped cutting edge is formed on a knife blank by disposing the blank between corresponding faces of a punch and die assembly, whereby a resilient face of the punch comprises the blank into a plurality of scallop-shaped depressions formed in the face of the die, thereby imparting a corresponding scalloped configuration to the edge portion of the blank.
Claims7
A method of forming a scalloped cutting edge on a knife blade comprising the steps of:
- (a) providing a punch and die assembly including a first face and a corresponding second face, the second face having a plurality of scallop-shaped depressions formed therein;
- (b) positioning a knife blank including an edge portion defined by a pair of opposed planar surfaces terminating at an end wall between the first and second faces;
- and
- (c) compressing the first face towards the second face to deform the edge portion of the blank into the depressions of the second face and outwardly of a planar surface thereof to impart a corresponding scalloped configuration to the edge portion, wherein each scallop includes an outwardly extending convex side and a concave side.
1 more element
Dependencies are inferred from the claim text.