Motorized garage door opener unlocking system

Details Motorized garage door opener unlocking system Motorized garage door opener unlocking system

1994-01-21

1996-04-23

Kannan, Philip C.

Movable or removable closures

Optionally moved, manually, or by motor

49199, 49280, E05F 1500

Patent

active

055092330

ABSTRACT:
This invention provides an existing garage door locking system with a motorized unlocking system that will unlock the garage door prior to motorized opening, but maintain garage accessability and security with the existing garage door locking system if a power or motorized garage door system failure occurs.

REFERENCES:
patent: 2097950 (1937-11-01), Johnson
patent: 2577348 (1951-12-01), McLaughlin
patent: 2589480 (1952-03-01), Curtis
patent: 2703235 (1955-03-01), Reamey
patent: 2982541 (1961-05-01), Brady
patent: 4827667 (1989-05-01), Jarvis
patent: 4884831 (1989-12-01), Emon
patent: 4996795 (1991-03-01), Niswonger
patent: 5001861 (1991-03-01), Hahn
patent: 5080409 (1992-01-01), Niswonger

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