Magnetically operated latch

Details Magnetically operated latch Magnetically operated latch

1989-05-16

1990-04-24

Smith, Gary L.

Closure fasteners

Magnetic

292201, E05C 1756

Patent

active

049194640

ABSTRACT:
A magnetically operated latch includes one or two latching members, the or each member including a permanent magnet and being turnable or slidable between an engaging position and a disengaged position, and a further member of magnetically soft material which attracts the magnet(s) to displace the latching member(s) into the engaging position(s). To disengage the latching member(s) a further magnet is brought to a position in which it acts repulsively on the permanent magnet(s) by way of the further member.

REFERENCES:
patent: 2730392 (1956-01-01), Thiebaud
patent: 3495425 (1970-02-01), Hallmann
patent: 3518855 (1970-07-01), Wake
patent: 3596958 (1971-08-01), Bowerman
patent: 3600019 (1971-08-01), Toyota
patent: 3641793 (1972-02-01), Van Dalen
patent: 3744833 (1973-07-01), Berducone
patent: 3785188 (1974-01-01), Drathschmidt
patent: 3831986 (1974-08-01), Kobayashi
patent: 3837195 (1974-09-01), Pelto
patent: 3837525 (1974-09-01), Kobayashi
patent: 4380162 (1983-04-01), Woolfson

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