Electronic door lock apparatus, system and method

Details Electronic door lock apparatus, system and method Electronic door lock apparatus, system and method

1989-01-06

1990-10-30

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

70219, 70278, 34082531, E05B 4900, E05B 4700

Patent

active

049673050

ABSTRACT:
Electronic door lock system for use with a door mounted in a door frame and has a dead bolt and a latch mounted on the door. A control unit is mounted on the door in the vicinity of the dead bolt and the latch and includes a battery and electronic circuitry connected to the battery and manually operable contacts for selectively operating the dead bolt and the latch so that they can be moved to unlatched positions under the control of first and second hand-operated members.

REFERENCES:
patent: 2810066 (1957-10-01), Green
patent: 3870877 (1975-03-01), Tolbird
patent: 4148092 (1979-04-01), Martin
patent: 4342210 (1982-08-01), Denningham
patent: 4411144 (1983-10-01), Aydin
patent: 4713555 (1987-12-01), Lee
patent: 4766746 (1988-08-01), Henderson et al.
patent: 4777556 (1988-10-01), Imran
patent: 4854143 (1989-08-01), Carder et al.

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