Pry-proof computerized mechanical lock

Details Pry-proof computerized mechanical lock Pry-proof computerized mechanical lock

1990-08-08

1992-03-03

Gall, Lloyd A.

Locks

Operating mechanism

Using a powered device

70386, 235382, 34082531, E05B 4902

Patent

active

050921487

ABSTRACT:
A kind of pry-proof computerized mechanical lock which is an integrated lock structure of mechanism and circuit. The front half inside the lock has several plates. The rear half of the lock has a rotor and a fixed seat which supports conductive bars in a special line-up. These conductive bars are biased by respective springs. The rear half of the key is aligned with several plates inside the lock which have portions engageable with openings in the key. When teh key is inserted, it matches accurately the plates through these opening and holes. When the key is turned, the rotor is made to turn at the same time to make the specially-shaped conductive plates to come into contact with the conductive bars. The circuit is then conductive to drive the electromagnetic bolt for opening a door.

REFERENCES:
patent: 4205542 (1980-06-01), Renda
patent: 4924686 (1990-05-01), Vonlanthen

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