Locking system using codable magnetic cards

Details Locking system using codable magnetic cards Locking system using codable magnetic cards

1981-05-12

1983-10-18

Wolfe, Robert L.

Locks

Operating mechanism

Using a powered device

70354, 70413, E05B 4700

Patent

active

044098065

ABSTRACT:
A card operable magnetic lock apparatus comprising an elongated non-magnetic plate member and a plurality of tumbler members which are normally biased into engagement in longitudinally spaced recesses of the plate member to prevent longitudinal movement thereof. The tumbler members pivot about a common axis and have north and south magnetic poles which are substantially opposite relative to the axis. A properly encoded magnetic card can be positioned adjacent the tumbler members to urge the tumbler members out of engagement in the recesses to free the plate member for longitudinal movement.

REFERENCES:
patent: 2384208 (1945-09-01), Stroud
patent: 2557028 (1951-06-01), Deutsch
patent: 3831986 (1974-08-01), Kobayashi
patent: 3837193 (1974-09-01), Csurgay

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