Electricity: motive power systems – Automatic and/or with time-delay means – Radiant energy
Patent
1994-05-27
1995-11-07
Shoop, Jr., William M.
Electricity: motive power systems
Automatic and/or with time-delay means
Radiant energy
318 17, 318445, 318466, G05B 500
Patent
active
054650330
ABSTRACT:
A safety system comprises a light beam transmitter and receiver and means connected through a standard AC power plug to the main power supply of an automatic garage door opener for controlling the power thereto. The transmitter transmits a beam of light across the opening of a garage door. The receiver is positioned to receive the light beam if there is nothing obstructing the beam. The receiver generates a signal indicating when the beam is being received. The means disconnects the power to the garage door opener when a signal is generated indicating that the light beam is not being received. The garage door is thus prevented from making contact with and hurting or damaging a person or object in its path.
REFERENCES:
patent: 2740856 (1956-04-01), Doeg
patent: 2752150 (1956-06-01), Richmond et al.
patent: 2909718 (1959-10-01), Lawick
patent: 3240484 (1966-03-01), Klamp
patent: 3277256 (1966-10-01), Jones
patent: 3445848 (1969-05-01), Goldstein
patent: 3754187 (1973-08-01), Deming
patent: 4273974 (1981-06-01), Miller
patent: 4922168 (1990-05-01), Waggamon et al.
patent: 4988992 (1991-01-01), Heitschel et al.
patent: 5023411 (1991-06-01), Miller et al.
patent: 5233185 (1993-08-01), Whitaker
Masih Karen
Shoop Jr. William M.
Texas Optoelectronics, Inc.
LandOfFree
Universal safety system for automatic doors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Universal safety system for automatic doors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal safety system for automatic doors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-198965