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US 3,941,164 AGranted
Process for making barbed material
OwnerDaniel D. Musgraveinventor
Life of this patent
Estimating the term…
Abstract
A process for making barbed material without scrap loss. The first step in manufacture is slitting the edge of the material to form points. The points are then bent to an exposed position by tractive magnetic means. As an additional step the pointed portions can be further displaced away from the edge by elongating or twisting the material.
Claims12
A process for making barbed material comprising:
- forming a slit intersecting an edge of a flat piece of magnetic material at an acute angle with said edge;
- and bending a portion defined by said slit and said edge out from said material by tractive magnetic means.
A process for making barbed tape comprising:
- forming a plurality of slits intersecting two edges of a strip of deformable flexible magnetic material at an acute angle with but not extending to the centerline of said strip;
- and bending portions defined by said slits and said edges out from said strip by tractive magnetic means.
Dependencies are inferred from the claim text.