Back to results
US 4,064,404 AGranted
Accessory for a garage door opener
AssigneeChamberlain Manufacturing Corporation
InventorsColin Barns Willmott, James D. Stifle
Life of this patent
Estimating the term…
Abstract
An accessory for a garage door opener which includes a circuit which is energized when the garage door operator is actuated and which can be used to energize a power circuit as, for example, a lamp so as to provide illumination upon energization of the garage door operator. The lamp automatically turns off after a pre-set time and can also be manually controlled by an on-off switch.
Claims6
An accessory circuit for a garage door opener comprising:
- a high voltage power supply,
- a load,
- a triac switch connected in series with said load to said high voltage power supply,
- a gate signal circuit connected to the gate of said triac switch,
- a low voltage AC power supply,
- an actuating switch connected to said low voltage power supply,
- an oscillator-timer connected to said low voltage power supply and reset when said actuating switch is closed,
- an output of said oscillator-timer connected to said gate signal circuit,
- including a diode bridge rectifier connected between said low voltage power supply and said oscillator-timer, including a resistor and capacitor connected to said oscillator-timer circuit to control its timing cycle, and including a voltage regulator connected between said diode bridge rectifier and said oscillator-timer.
6 more elements
Dependencies are inferred from the claim text.