US4716301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital light control
Assignee: The Chamberlain Group LLC
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Filing: 1986-04-08
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Granted: 1987-12-29
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Expires: 2006-04-08
Abstract
Abstract The present invention provides a power supply for a digital light controller which is placed in a wall box where the neutral line cannot be used. The invention uses two separate and different kinds of power supplies that are placed in series with the load and the digital light controller depends on the power supply 1 when the load is off and on the second power supply when the load is on. The supplies are alternately switched when either the remote control or a manual switch is triggered. The first power supply uses a switch that is either opened or closed to develope a voltage drop of V or 0 and the second supply uses diodes back to back to develop a voltage drop which can be stepped up and rectified to a DC voltage for powering the digital light control.
Inventors
- 👤 Colin B. Willmott
- 👤 Carl T. Heitschel
- 👤 Bernard J. Wojciak, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:31
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/59; H; H02; H02J; H02J13/00; H02J13/13; H02J13/1331; Y; Y02; Y02B; Y02B90/00; Y02B90/20; Y02E; Y02E60/00; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/126
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
205 words
A power circuit for remotely or locally energizing a load, comprising, an A.C. power source, a first power supply comprising a first switching means which can be either in the opened or closed position, said A.C. power source connected to one side of said first switching means, said load with one side connected to the second side of said A.C. power source, a pair of back to back diodes connected to said A.C. power source and a transformer with its primary winding in parallel with said back to back diodes and with one side connected to the second side of said load, the second side of said first switching means and the second side of said transformer connected to ground, a transmitter, a receiver energized by said transmitter and connected to a trigger circuit, said trigger circuit connected to said first switching means to move it from an opened to a closed position, a diode rectifier connected to said receiver, a secondary winding of said transformer connected to said diode rectifier, a clock circuit connected between said trigger circuit and said first side of said A.C. power source and an amplifier circuit connected between said first side of said A.C. power source and said receiver.
Claim 2
Dependent Claim
205 words
A power circuit for remotely or locally energizing a load, comprising, an A.C. power source, a first power supply comprising a first switching means which can be either in the opened or closed position, said A.C. power source connected to one side of said first switching means, said load with one side connected to the second side of said A.C. power source, a pair of back to back diodes connected to said A.C. power source and a transformer with its primary winding in parallel with said back to back diodes and with one side connected to the second side of said load, the second side of said first switching means and the second side of said transformer connected to ground, a transmitter, a receiver energized by said transmitter and connected to a trigger circuit, said trigger circuit connected to said first switching means to move it from an opened to a closed position, a diode rectifier connected to said receiver, a secondary winding of said transformer connected to said diode rectifier, a clock circuit connected between said trigger circuit and said first side of said A.C. power source and an amplifier circuit connected between said first side of said A.C. power source and said receiver.
Claim 3
Dependent Claim
25 words
A power circuit according to claim 1 including a manual switch connected to said trigger circuit to energize it to energize or de-energize said load.
Claim 4
Dependent Claim
15 words
A power circuit according to claim 2 wherein said first switching means is a relay.
Claim 5
Dependent Claim
20 words
A power circuit according to claim 3 wherein a first transistor is connected between said trigger circuit and said relay.
Claim 6
Dependent Claim
14 words
A power circuit according to claim 4 wherein said amplifier includes a second transistor.
Claim 7
Dependent Claim
20 words
A power circuit according to claim 5 wherein said clock circuit comprises an oscillator circuit that includes a third transistor.
Claim 8
Dependent Claim
146 words
A power circuit for remotely or locally energizing a load comprising, a receiver, an A.C. power source, a first switching means which can be in either the opened or closed condition with one side connected to one side of said A.C. power source and the second side connected to ground, a charging circuit connected between said receiver and said one side of said first switching means, one side of said load connected to the second side of said A.C. power source, the primary winding of a transformer connected between the second side of said A.C. load and ground, a plurality of diodes connected in parallel with said primary, a first trigger circuit connected to said receiver and to said first switching means, a transmitter for energizing said receiver, a diode rectifier connected to said receiver, and a secondary of said transformer connected to said diode rectifier.
Claim 9
Dependent Claim
146 words
A power circuit for remotely or locally energizing a load comprising, a receiver, an A.C. power source, a first switching means which can be in either the opened or closed condition with one side connected to one side of said A.C. power source and the second side connected to ground, a charging circuit connected between said receiver and said one side of said first switching means, one side of said load connected to the second side of said A.C. power source, the primary winding of a transformer connected between the second side of said A.C. load and ground, a plurality of diodes connected in parallel with said primary, a first trigger circuit connected to said receiver and to said first switching means, a transmitter for energizing said receiver, a diode rectifier connected to said receiver, and a secondary of said transformer connected to said diode rectifier.
Claim 10
Dependent Claim
17 words
A power circuit according to claim 7 including a manual switch connected to said first trigger circuit.
Claim 11
Dependent Claim
15 words
A power circuit according to claim 8 wherein said first switching means is a thyristor.
Claim 12
Dependent Claim
25 words
A power circuit according to claim 9 including a first transistor and a second trigger circuit connected between said first trigger circuit and said thyristor.
Claim 13
Dependent Claim
17 words
A power circuit according to claim 10 including a clock circuit connected to said first trigger circuit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |