US3130347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and systems for dimming and operating gaseous discharge lamps
Assignee: General Electric Co
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Filing: 1962-06-04
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Granted: 1964-04-21
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Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Harpley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:00
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/36; H05B41/38; H05B41/39; H05B41/392; H05B41/3921; H05B41/3924; Y; Y10; Y10S; Y10S315/00; Y10S315/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A SYSTEM FOR OPERATING AND DIMMING FLUORESCENT LAMPS FROM AN ALTERNATING POWER SOURCE COMPRISING A FIRST AND A SECOND INPUT LEAD FOR CONNECTION WITH THE ALTERNATING POWER SOURCE; A PAIR OF SUPPLY LINES CONNECTED IN CIRCUIT WITH SAID INPUT LEADS; A PHASE CONTROL CIRCUIT INCLUDING AT LEAST ONE PHASE CONTROLLED SWITCHING DEVICE AND A FIRING CIRCUIT TO SUPPLY A FIRING PULSE TO THE PHASE CONTROLLED SWITCHING DEVICE AT A PREDETERMINED POINT IN EACH HALF CYCLE OF THE ALTERNATING POWER SOURCE TO SWITCH SAID PHASE CONTROLLED SWITCHING DEVICE TO A CONDUCTING STATE; A SWITCHING LINE CONNECTED IN CIRCUIT WITH SAID PHASE CONTROLLED SWITCHING DEVICE, SAID DEVICE BEING CONNECTED IN CIRCUIT WITH SAID FIRST INPUT LEAD AND CAUSING SAID SWITCHING LINE AND SAID FIRST INPUT LEAD TO BE CONNECTED IN ELECTRICAL CIRCUIT WHEN SAID DEVICE IS FIRED TO SAID CONDUCTING STATE; AT LEAST ONE BALLAST INCLUDING A BALLAST TRANSFORMER, SAID BALLAST TRANSFORMER HAVING A PRIMARY WINDING CONNECTED ACROSS A PAIR OF INPUT TERMINAL LEADS CONNECTED IN CIRCUIT WITH SAID SUPPLY LINES, A HIGH REACTANCE SECONDARY WINDING INDUCTIVELY COUPLED WITH SAID PRIMARY WINDING, OUTPUT LEADS FOR CONNECTION IN CIRCUIT WITH AT LEAST ONE
Claim 2
Independent Claim
190 words
A SYSTEM FOR OPERATING AND DIMMING FLUORESCENT LAMPS FROM AN ALTERNATING POWER SOURCE COMPRISING A FIRST AND A SECOND INPUT LEAD FOR CONNECTION WITH THE ALTERNATING POWER SOURCE; A PAIR OF SUPPLY LINES CONNECTED IN CIRCUIT WITH SAID INPUT LEADS; A PHASE CONTROL CIRCUIT INCLUDING AT LEAST ONE PHASE CONTROLLED SWITCHING DEVICE AND A FIRING CIRCUIT TO SUPPLY A FIRING PULSE TO THE PHASE CONTROLLED SWITCHING DEVICE AT A PREDETERMINED POINT IN EACH HALF CYCLE OF THE ALTERNATING POWER SOURCE TO SWITCH SAID PHASE CONTROLLED SWITCHING DEVICE TO A CONDUCTING STATE; A SWITCHING LINE CONNECTED IN CIRCUIT WITH SAID PHASE CONTROLLED SWITCHING DEVICE, SAID DEVICE BEING CONNECTED IN CIRCUIT WITH SAID FIRST INPUT LEAD AND CAUSING SAID SWITCHING LINE AND SAID FIRST INPUT LEAD TO BE CONNECTED IN ELECTRICAL CIRCUIT WHEN SAID DEVICE IS FIRED TO SAID CONDUCTING STATE; AT LEAST ONE BALLAST INCLUDING A BALLAST TRANSFORMER, SAID BALLAST TRANSFORMER HAVING A PRIMARY WINDING CONNECTED ACROSS A PAIR OF INPUT TERMINAL LEADS CONNECTED IN CIRCUIT WITH SAID SUPPLY LINES, A HIGH REACTANCE SECONDARY WINDING INDUCTIVELY COUPLED WITH SAID PRIMARY WINDING, OUTPUT LEADS FOR CONNECTION IN CIRCUIT WITH AT LEAST ONE
References Cited (Backward Citations)
US3031598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |