Automatic control and safety device for garage door opener
First Claim
1. An automatic control and safety device for powered garage door of the type having an electric reversible motor to raise and lower the door, comprising:
- control relay means actuatable to closed position to enable a garage door to open or close;
control activating means energizable to provide an electrical signal output to activate said control relay means;
reclose control means responsive to passage of vehicle through the garage door for providing a signal to energize said control activating means, said reclose control means being not responsive to passage of an object distinctly smaller than a vehicle through the garage door; and
safety reverse control means responsive to closing movement of said garage door and obstruction in the door way for changing the state of the movement of said garage door if said obstruction occurs, the closing movement of said garage door being monitored by two switching means and a movement monitoring circuit, the obstruction in the door way being monitored by a infrared beam across the garage door frame opening.
0 Assignments
0 Petitions
Accused Products
Abstract
A control device for garage door opener to provide automatic reclose and safety reverse if obstruction occurs is disclosed. Photoelectric sensors are positioned across the door opening to detect the passage of a vehicle through the door and signal the device to reclose the door. The sensors also detect obstruction and reverse closing movement of the door or, otherwise, disable activation of movement. An oscillator causes the door to reclose if the door remained open for a predetermined time interval. Safety warning signal is generated shortly before the oscillator controlled reclosure.
-
Citations
9 Claims
-
1. An automatic control and safety device for powered garage door of the type having an electric reversible motor to raise and lower the door, comprising:
-
control relay means actuatable to closed position to enable a garage door to open or close; control activating means energizable to provide an electrical signal output to activate said control relay means; reclose control means responsive to passage of vehicle through the garage door for providing a signal to energize said control activating means, said reclose control means being not responsive to passage of an object distinctly smaller than a vehicle through the garage door; and safety reverse control means responsive to closing movement of said garage door and obstruction in the door way for changing the state of the movement of said garage door if said obstruction occurs, the closing movement of said garage door being monitored by two switching means and a movement monitoring circuit, the obstruction in the door way being monitored by a infrared beam across the garage door frame opening. - View Dependent Claims (2, 3, 4)
-
-
5. An automatic control and safety device for powered garage door of the type having an electrical reversible motor to raise and lower the door, comprising:
-
control relay means actuatable to closed position to enable a garage door to open or close; control activating means energizable to provide an electrical signal output to activate said control relay means; oscillator and warning means for providing a first signal to enable the operation of a safety warning means and a second signal to energize said control activating means after the garage door is open for a predetermined period of time; sound activated control means for energizing said control activating means when a service entrance door switch is activated and a vehicle door is slammed shut causing a loud sound; and obstruction detection means comprised of photoelectric sensors mounted across the garage door frame opening for controlling energization of said control activating means. - View Dependent Claims (6, 7, 8, 9)
-
Specification