US4259619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-way light dimmer switch
Assignee: POWER CONTROLS CORP A CORP OF TEXAS (CHARTER NO 544 785)
•
Filing: 1977-05-16
•
Granted: 1981-03-31
•
Expires: 1997-05-16
Abstract
Abstract A three-way light dimmer switch is shown wherein the brightness of a lamp or lamps is controlled by independent light dimmer switches with each dimmer switch having its own light dimmer circuit. Each of the light dimmer switches is vertically actuated with one end of the vertical movement turning the lamp or lamps ON, and the other end of the vertical movement turning the lamp or lamps OFF. Between the limits of vertical movement, either of the light dimmer switches may vary the voltage potential received by the lamp to thereby adjust the brightness of the lamp.
Inventors
- 👤 Bill R. Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:11
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/04; H05B39/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
243 words
A three-way switching circuit for varying power received by a load comprising: first switching means having a first power limiting circuit therein, said first switching means including a first contactor arm mounted therein actuated at first and second limit positions of a first arcuately moveable control, said actuation of said first contactor arm by said first arcuately moveable control changing electrical connections between said first contactor arm and said first power limiting circuit, said first contactor arm being connected to a first side of a voltage source; second switching means having a second power limiting circuit therein, said second switching means including a second contactor arm mounted therein actuated at third and fourth limit positions of a second arcuately moveable control, said actuation of said second contactor arm by said second arcuately moveable control changing electrical connections between said second contactor arm and said second power limiting circuit, said load being connected in series with a second side of said voltage source and said second contactor arm; first connecting means electrically connecting said first power limiting circuit to said second power limiting circuit; second connecting means for electrically connecting either of said first and second power limiting circuits through said first contactor arm to said first side of said voltage source and through said second contactor arm to said load to vary power received by said load, both said first and second switching means being independently operable to cause said variation of power.
Claim 2
Dependent Claim
243 words
A three-way switching circuit for varying power received by a load comprising: first switching means having a first power limiting circuit therein, said first switching means including a first contactor arm mounted therein actuated at first and second limit positions of a first arcuately moveable control, said actuation of said first contactor arm by said first arcuately moveable control changing electrical connections between said first contactor arm and said first power limiting circuit, said first contactor arm being connected to a first side of a voltage source; second switching means having a second power limiting circuit therein, said second switching means including a second contactor arm mounted therein actuated at third and fourth limit positions of a second arcuately moveable control, said actuation of said second contactor arm by said second arcuately moveable control changing electrical connections between said second contactor arm and said second power limiting circuit, said load being connected in series with a second side of said voltage source and said second contactor arm; first connecting means electrically connecting said first power limiting circuit to said second power limiting circuit; second connecting means for electrically connecting either of said first and second power limiting circuits through said first contactor arm to said first side of said voltage source and through said second contactor arm to said load to vary power received by said load, both said first and second switching means being independently operable to cause said variation of power.
Claim 3
Dependent Claim
48 words
The three-way circuit as given in claim 1 wherein said second connecting means includes third and fourth switching means having at least single pole, double-throw capabilities in said first and second switching means, respectively, said first and second contactor arms operating said third and fourth switching means, respectively.
Claim 4
Dependent Claim
44 words
The three-way circuit as given in claim 2 wherein said first and second contactor arms form fifth and sixth switching means having at least single pole, single-throw capabilities in said first and second switching means, respectively, for operatively connecting with said first connecting means.
Claim 5
Dependent Claim
66 words
The three-way circuit as given in claim 3 wherein a first end of said first and second contactor arms operates said fifth and sixth switching means, respectively; and a second end of said first and second contactor arms operate said third and fourth switching means, respectively; said first and second contactor arms operating in response to movement of said first and second arcuately moveable controls, respectively.
References Cited (Backward Citations)
US3011095A
Cited
US3037146A
Cited
US3534224A
Cited
US3893002A
Cited
US3846671A
Cited
US3868546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |