US4064404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accessory for a garage door opener
Assignee: Chamberlain Manufacturing Corp
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Filing: 1976-04-19
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Granted: 1977-12-20
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Expires: 1996-04-19
Abstract
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.
Inventors
- 👤 Colin Barns Willmott
- 👤 James D. Stifle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:57
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H03K17/292; H03K17/18; E; E05; E05Y; E05Y2800/00; E05Y2800/10; E05Y2800/106
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
131 words
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.
Claim 2
Dependent Claim
131 words
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.
Claim 3
Dependent Claim
12 words
An accessory circuit according to claim 1 wherein said resistor is variable.
Claim 4
Dependent Claim
21 words
An accessory circuit according to claim 1 wherein said gate signal circuit comprises a light emitting diode and a light detector.
Claim 5
Dependent Claim
27 words
An accessory circuit according to claim 1 including a second resistor connected between said gate of said triac and one side of said high voltage power supply.
Claim 6
Dependent Claim
19 words
An accessory circuit according to claim 1 including a third resistor and a second capacitor connected across said triac.
Claim 7
Dependent Claim
71 words
An accessory circuit according to claim 1 including a three position switch connected to said load, said triac and said high voltage power supply and moveable to automatic position wherein said triac is in the high voltage power supply, to off position wherein said high voltage power supply is disconnected from said load and said triac, and to on position wherein said load is connected to said high voltage power supply.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |