Garage door operator safety apparatus

Details Garage door operator safety apparatus Garage door operator safety apparatus

1998-09-17

1999-12-07

Salata, Jonathan

Electricity: motive power systems

Motor-reversing

318466, H02P 300

Patent

active

059989505

ABSTRACT:
A garage door opening and closing apparatus having improved operational safety is disclosed. The apparatus includes a control circuit which responds to a number of input stimuli to generate commands to open and close a garage door as well as to stop garage door movement. Three relays respond to the commands via drive circuitry to actually connect door operating voltages to the windings of a door controlling motor. By redundancies in the operation of the three relays, faults in the operation of those relays result in safe door operating conditions. Additionally, the control circuitry upon issuing a door stop command, performs a test to determine whether or not the door is still moving. If the door is still moving, door up commands are generated by the control circuitry to place the door in a safe position.

REFERENCES:
patent: 4035702 (1977-07-01), Pettersen et al.
patent: 4234833 (1980-11-01), Barrett
patent: 4338553 (1982-07-01), Scott, Jr.
patent: 4383206 (1983-05-01), Matsuoka et al.
patent: 5218282 (1993-06-01), Duhame
patent: 5684372 (1997-11-01), Fitzgibbon et al.

Affiliated with

Also associated with

Rating

Garage door operator safety apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Garage door operator safety apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Garage door operator safety apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-827876