Snap fastener

Details Snap fastener Snap fastener

1986-04-23

1988-06-21

Dorner, Kenneth J.

Buckles, buttons, clasps, etc.

Separable-fastener or required component thereof

Including member having distinct formations and mating...

24662, 24689, A44B 1700

Patent

active

047517735

ABSTRACT:
A snap fastener wherein the female component has an end wall with a rim extending from one side of the end wall and a centrally located elastically deformable female coupling element provided on a frustoconical central portion of the end wall. The central portion has a concave surface at the other side of the end wall. The male component has a mushroom-shaped male coupling element which can be forced, not unlike an arrowhead, the female coupling element from the concave side of the central portion of the end wall. The force which must be applied to extract the male coupling element from the female coupling element is several times the force which is required to insert the male coupling element because the central portion of the end wall yields more readily in a direction toward the one side of the end wall.

REFERENCES:
patent: 1229562 (1917-06-01), Willetts
patent: 1604020 (1926-10-01), Carr
patent: 2018635 (1935-10-01), Carr
patent: 2256849 (1941-09-01), Purinton
patent: 2312441 (1943-03-01), Reiter
patent: 2759238 (1956-08-01), Williams
patent: 2933831 (1960-04-01), Le Compte
patent: 3376618 (1968-04-01), Schworzkopf
patent: 3414949 (1968-12-01), Andrews
patent: 3551963 (1971-01-01), Mosher, Jr. et al.
patent: 3916756 (1975-11-01), Yoda

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