Magnetic fastener

Details Magnetic fastener Magnetic fastener

1983-10-21

1989-05-02

Aschenbrenner, Peter A.

Buckles, buttons, clasps, etc.

Having magnetic fastener

335285, A44B 1700

Patent

active

048255262

ABSTRACT:
A magnetic fastener wherein magnetic flux from a permanent magnet flows to and from a permeable planar armature through air gaps of substantially equal areas which are small compared with the area of either face of the magnet.

REFERENCES:
patent: 2964275 (1960-12-01), Atkinson
patent: 2975497 (1961-03-01), Budreck
patent: 3009225 (1961-11-01), Budreck
patent: 3086268 (1963-04-01), Chaffin, Jr.
patent: 3171176 (1965-03-01), Shirley
patent: 3277681 (1966-10-01), Bey
patent: 3304527 (1967-02-01), Marrs et al.
patent: 4021891 (1977-05-01), Morita
patent: 4200852 (1980-04-01), Aoki
patent: 4458395 (1984-07-01), Aoki

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