Electronic combination lock with closure and locking verificatio

Details Electronic combination lock with closure and locking verificatio Electronic combination lock with closure and locking verificatio

1994-02-18

1996-01-30

Bowler, Alyssa H.

Communications: electrical

Continuously variable indicating

With meter reading

34082532, 380 23, 380 59, E05B 4900, G06F 704, H04L 912

Patent

active

054883580

ABSTRACT:
A lock is described which has the capability to generate or encrypt a close number which is then displayed to the operator of the lock to be used to verify the locking of the lock. This number must be reported to a central dispatch operation where it is compared with a number similarly generated using identical starting values and an identical encryption algorithm. Comparison of the two numbers, resulting in a compare equal will indicate that the lock has been locked since the lock encryption operation is dependent upon the repowering of the lock. The lock is repowered after it has been opened by rotation of the dial which will extend the bolt and through the rotation of the dial drive a stepper motor/generator to provide electrical power to the lock.

REFERENCES:
patent: 4800590 (1989-01-01), Vaughan
patent: 4807139 (1989-02-01), Liechti
patent: 4904984 (1990-02-01), Gartner et al.
patent: 5017766 (1991-05-01), Tamada et al.
patent: 5061923 (1991-10-01), Millier et al.
patent: 5144667 (1992-09-01), Pogue, Jr. et al.
patent: 5321242 (1994-06-01), Heath, Jr.
patent: 5367572 (1994-11-01), Weiss

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