Remote controlled door lock system

Details Remote controlled door lock system Remote controlled door lock system

1997-11-07

2000-04-04

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

70277, 70280, 375352, 361172, G06F 704

Patent

active

060466812

ABSTRACT:
A Remote Controlled Door Lock System for securely retracting a locking bolt from engagement to a striker plate disposed in a door jamb. The inventive device includes a solenoid for retracting the lock bolt from engagement to the striker plate, a first microcontroller and associated circuitry for generating and transmitting a first signal representing an access code, receiving and decoding a second signal representing a random value and generating and transmitting a third signal representing a unique alteration of the random value, and a second microcontroller and associated circuitry for receiving and decoding the first and third signals, generating and transmitting the second signal and for generating a fourth signal operable to energize the solenoid.

REFERENCES:
patent: 3906447 (1975-09-01), Crafton
patent: 3926021 (1975-12-01), Genest et al.
patent: 4206450 (1980-06-01), Harden et al.
patent: 4509093 (1985-04-01), Stellberger
patent: 4525805 (1985-07-01), Prosan et al.
patent: 4870400 (1989-09-01), Downs et al.
patent: 5061923 (1991-10-01), Miller et al.

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