US3249805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light control circuit
Assignee: Superior Electric Co
•
Filing: 1962-04-26
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Granted: 1966-05-03
•
Expires: 1982-04-26
Abstract
No abstract record available.
Inventors
- 👤 Owen J Mccabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:01
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/04; H05B39/08; H05B39/083; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/445; Y; Y10; Y10S; Y10S315/00; Y10S315/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
AN ELECTRIC CIRCUIT ADAPTED TO BE CONNECTED IN SERIES WITH AN ELECTRIC LAMP ACROSS AN ALTERNATING CURRENT SOURCE FOR ADJUSTABLY CONTROLLING THE AMOUNT TO POWER TO THE ELECTRIC LAMP TO THEREBY VARY THE ILLUMINATION THEREOF COMPRISING A PAIR OF TERMINALS, A PAIR OF SILICON CONTROLLED RECTIFIERS CONNECTED TO CONDUCT OPPOSITELY ACROSS SAID TERMINALS WITH EACH HAVING A GATE ANODE AND CATHODE, A TRANSFORMER HAVING A PRIMARY WINDING AND A PAIR OF SECONDARY WINDINGS, MEANS CONNECTING ONE OF THE SECONDARY WINDINGS BETWEEN THE CATHODE AND GATE OF ONE CONTROLLED RECTIFIER AND THE OTHER WINDING BETWEEN THE CATHODE AND GATE OF THE OTHER CONTROLLED RECTIFIER, A FOUR JUNCTION RECTIFYING BRIDGE HAVING A DIODE IN EACH ONE OF A PAIR OF ADJACENT LEGS AND A RESISTOR IN EACH OF THE OTHER PAIR OF ADJACENT LEGS, MEANS CONNECTING A JUNCTION OF ONE PAIR OF ADJACENT LEGS TO ONE TERMINAL AND THE JUNCTION OF THE OTHER PAIR OF ADJACENT LEGS TO THE OTHER TERMINAL, A UNIJUNCTION TRANSISTOR HAVING TWO BASES AND AN EMITTER, MEANS CONNECTING THE TWO BASES AND THE PRIMARY WINDING OF THE TRANSFORMER IN SERIES ACROSS THE OTHER TWO JUNCTIONS OF THE BRIDGE, A REISTANCE-CAPACITOR NETWORK CONNECTED BETWEEN THE BASES
Claim 2
Dependent Claim
197 words
AN ELECTRIC CIRCUIT ADAPTED TO BE CONNECTED IN SERIES WITH AN ELECTRIC LAMP ACROSS AN ALTERNATING CURRENT SOURCE FOR ADJUSTABLY CONTROLLING THE AMOUNT TO POWER TO THE ELECTRIC LAMP TO THEREBY VARY THE ILLUMINATION THEREOF COMPRISING A PAIR OF TERMINALS, A PAIR OF SILICON CONTROLLED RECTIFIERS CONNECTED TO CONDUCT OPPOSITELY ACROSS SAID TERMINALS WITH EACH HAVING A GATE ANODE AND CATHODE, A TRANSFORMER HAVING A PRIMARY WINDING AND A PAIR OF SECONDARY WINDINGS, MEANS CONNECTING ONE OF THE SECONDARY WINDINGS BETWEEN THE CATHODE AND GATE OF ONE CONTROLLED RECTIFIER AND THE OTHER WINDING BETWEEN THE CATHODE AND GATE OF THE OTHER CONTROLLED RECTIFIER, A FOUR JUNCTION RECTIFYING BRIDGE HAVING A DIODE IN EACH ONE OF A PAIR OF ADJACENT LEGS AND A RESISTOR IN EACH OF THE OTHER PAIR OF ADJACENT LEGS, MEANS CONNECTING A JUNCTION OF ONE PAIR OF ADJACENT LEGS TO ONE TERMINAL AND THE JUNCTION OF THE OTHER PAIR OF ADJACENT LEGS TO THE OTHER TERMINAL, A UNIJUNCTION TRANSISTOR HAVING TWO BASES AND AN EMITTER, MEANS CONNECTING THE TWO BASES AND THE PRIMARY WINDING OF THE TRANSFORMER IN SERIES ACROSS THE OTHER TWO JUNCTIONS OF THE BRIDGE, A REISTANCE-CAPACITOR NETWORK CONNECTED BETWEEN THE BASES
References Cited (Backward Citations)
US2790898A
Cited
US2920240A
Cited
US3019355A
Cited
US3097314A
Cited
US3146392A
Cited
US3075136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |