Magnet clasp

Details Magnet clasp Magnet clasp

1982-11-16

1984-07-10

Sakran, Victor N.

Buckles, buttons, clasps, etc.

Having magnetic fastener

2922515, 335236, E05C 1756, H01F 312

Patent

active

044583958

ABSTRACT:
A magnet clasp a stationary part and a movable part, the stationary part including a permanent magnet, ferromagnetic plates secured to the permanent magnet, a ferromagnetic pillar and a non-magnetic case and cover which encase and cover the permanent magnet and associated parts, while the movable part has a ferromagnetic plug adapted to received by a central hole of the stationary part. The magnetic attracting force acts between the permanent magnet and the ferromagnetic plug to firmly hold the stationary and movable parts only when the ferromagnetic plug is placed in the central hole of the stationary part, whereas, when the ferromagnetic plug is placed on other portions of the stationary part, no substantial magnetic attracting force is exerted.

REFERENCES:
patent: 2288688 (1942-07-01), Dubilier
patent: 2585714 (1952-02-01), Wrobel et al.
patent: 2901278 (1959-08-01), Robinson
patent: 2955239 (1960-10-01), Rouse
patent: 3277681 (1966-10-01), Bey
patent: 4021891 (1977-05-01), Morita
patent: 4219062 (1980-08-01), Berkman
patent: 4265002 (1981-05-01), Hosken
patent: 4310188 (1982-01-01), Aoki

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