Self-locking fastener and a stamp for making said fastener

Details Self-locking fastener and a stamp for making said fastener Self-locking fastener and a stamp for making said fastener

1981-01-13

1982-11-23

Rosenbaum, Mark

10 86A, 10 86F, B21D 5324

Patent

active

043597947

ABSTRACT:
A male die for making a self-locking threaded fastener where the die has a planar working surface with a plurality of elongated teeth on the surface. The teeth are arranged in a plurality of groups with the teeth of each group extending parallel to each other and to a tangent to a bore in the die. The crests of the teeth extend above the working surface and the roots of the teeth are below the working surface.

REFERENCES:
patent: 1298863 (1919-04-01), Baker
patent: 1952305 (1934-03-01), Beck
patent: 2147209 (1939-02-01), Olson
patent: 2328495 (1943-08-01), Reed
patent: 3509521 (1970-04-01), Gutshall
patent: 3693685 (1972-09-01), Onufer

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