Split ring springs for snap fasteners and method of manufacturin

Details Split ring springs for snap fasteners and method of manufacturin Split ring springs for snap fasteners and method of manufacturin

1989-01-17

1990-01-02

Sakran, Victor N.

Buckles, buttons, clasps, etc.

Separable-fastener or required component thereof

Including member having distinct formations and mating...

24106, 24530, A44B 1700

Patent

active

048903647

ABSTRACT:
A split ring spring for snap fasteners has a burr extending from each end of the ring spring in a direction parallel to the imaginary central axis of the ring spring. When a stud member is snapped with a socket member in which the split ring spring is incorporated, the burrs do not damage or scar a body of the stud member. The ring spring having such unobjectionable burrs is produced by feeding a length of a strip of resilient material transversely across a mandrel, then severing the length off the strip in a direction parallel to the longitudinal axis of the mandrel while holding the length on the mandrel, and thereafter bending the severed length of strip around the mandrel.

REFERENCES:
patent: 276993 (1883-05-01), Arnold
patent: 2104239 (1938-01-01), Place
patent: 2314751 (1943-03-01), Woodward
patent: 2667004 (1954-01-01), Sanson
patent: 3357674 (1967-12-01), Coanda et al.

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