Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...
Patent
1981-10-21
1983-12-27
Hafer, Robert A.
Buckles, buttons, clasps, etc.
Separable-fastener or required component thereof
Including member having distinct formations and mating...
24289, 24297, 24682, 24697, 411349, 411508, A44B 1700, A44B 2100
Patent
active
044222220
ABSTRACT:
A fastener for detachably fastening first and second workpieces together is disclosed. The first workpiece has a through aperture of predetermined shape. The second workpiece has a through aperture of predetermined shape which includes a first small diameter portion having first opposed edges spaced apart a first predetermined distance and a second annularly displaced portion having second opposed edges spaced apart a second, relatively larger predetermined distance. The fastener comprises a base, a first catch portion integral with and extending outwardly from a first side of the base, a second catch portion integral with and extending outwardly from the base oppositely from the first catch portion, and a twistable stem integral with the base for enabling at least one of the first and second catch portions to be twisted for angularly spacing such catch portion for disengagement of the fastener from the aperture of at least one of the first and second workpieces with which such catch portion is engaged.
REFERENCES:
patent: D209171 (1967-11-01), Myatt
patent: 2692414 (1954-10-01), Poupitch
patent: 2836215 (1958-05-01), Rapata
patent: 3246375 (1966-04-01), Landwer
patent: 3443783 (1969-05-01), Fisher
patent: 3651545 (1972-03-01), Hara
patent: 4114339 (1978-09-01), Ito
patent: 4247219 (1981-01-01), Ausprung
patent: 4261151 (1981-04-01), Ito
patent: 4285103 (1981-08-01), Inamoto
patent: 4342139 (1982-08-01), Tanaka
Hafer Robert A.
Nifco Inc.
Polakowski Paul S.
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