Automatic door opener

Details Automatic door opener Automatic door opener

1983-05-10

1984-06-05

Caun, Peter M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Roll type

49 28, 361 32, E06B 9204

Patent

active

044522924

ABSTRACT:
A door is provided having an automatic opening means for the door and a key locking facility for mechanically locking the door in a door closed position and electric circuit means connected with the motor means to sense a change in the electrical operating conditions of the motor above that which is normal for operation of the motor and to remove the above normal power thereby supplied to the motor in such circumstances.
The sensing means preferably comprises a means which switches off the power once the electrical operating conditions are sensed above that which is normal and whereby it returns the power some time later and should the motor then reexperience electrical operating conditions above that which is normal the sensing means will again switch off the power to the motor.
The sensing means desirably comprise a bimetallic cut out switch means.

REFERENCES:
patent: 2881379 (1959-04-01), Russell
patent: 3255397 (1966-06-01), Vaughan
patent: 3481387 (1969-12-01), Purdy
patent: 3733532 (1973-05-01), Hill
patent: 3891909 (1975-06-01), Newson
patent: 4161681 (1979-07-01), Rathje
patent: 4189712 (1980-02-01), Lemelson
patent: 4272708 (1981-06-01), Carle et al.
"Genie Automatic Garage Door Opener System by Alliance, Owner's Manual GS 850", The Alliance Manufacturing Co., Inc., (copyright 1980).

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