US3089980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballast apparatus for starting and operating electric discharge lamps
Assignee: General Electric Co
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Filing: 1961-06-01
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Granted: 1963-05-14
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Expires: 1981-06-01
Abstract
No abstract record available.
Inventors
- 👤 Frank A Neusbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:52
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/232; Y; Y10; Y10S; Y10S315/00; Y10S315/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A BALLAST APPARATUS FOR STARTING AND OPERATING AT LEAST ONE FLUORESCENT LAMP DISPOSED IN A CAPACITIVE RELATION WITH A CONDUCTIVE FIXTURE, SAID APPARATUS COMPRISING A HIGH REACTANCE TRANSFORMER HAVING A PRIMARY WINDING ANMD A SECONDARY WINDING INDUCTIVELY COUPLED THEREWITH ON A MAGNETIC CORE, A PAIR OF INPUT TERMINAL LEADS CONNECTED ACROSS SAID PRIMARY WINDING, A CIRCUIT MEANS INCLUDING A PAIR OF OUTPUT LEADS FOR APPLYING THE OUTPUT OF SAID TRANSFORMER ACROSS SAID LAMP, A CAPACITOR SERIALLY CONNECTED WITH SAID SECONDARY WINDING TO CASE A LEADING CURRENT TO FLOW THERETHROUGH, A CONDUCTIVE BALLAST CASE, SAID HIGH REACTANCE TRANSFORMER AND CAPACITOR BEING DISPOSED IN SAID BALLAST CASE, SAID CAPACITOR INCLUDING A CAPACITOR ROLL HAVING ELECTRODES OF INTERLEAVED FOIL LAYERS AND A CONDUCTIVE CONTAINER FOR HOUSING SAID CAPACITOR AND DISPOSED IN CAPACITIVE RELATION WITH THE OUTER FOIL LAYER AND CIRCUIT MEANS FOR CONNECTING SAID CONTAINER IN ELEC-
Claim 2
Dependent Claim
144 words
A BALLAST APPARATUS FOR STARTING AND OPERATING AT LEAST ONE FLUORESCENT LAMP DISPOSED IN A CAPACITIVE RELATION WITH A CONDUCTIVE FIXTURE, SAID APPARATUS COMPRISING A HIGH REACTANCE TRANSFORMER HAVING A PRIMARY WINDING ANMD A SECONDARY WINDING INDUCTIVELY COUPLED THEREWITH ON A MAGNETIC CORE, A PAIR OF INPUT TERMINAL LEADS CONNECTED ACROSS SAID PRIMARY WINDING, A CIRCUIT MEANS INCLUDING A PAIR OF OUTPUT LEADS FOR APPLYING THE OUTPUT OF SAID TRANSFORMER ACROSS SAID LAMP, A CAPACITOR SERIALLY CONNECTED WITH SAID SECONDARY WINDING TO CASE A LEADING CURRENT TO FLOW THERETHROUGH, A CONDUCTIVE BALLAST CASE, SAID HIGH REACTANCE TRANSFORMER AND CAPACITOR BEING DISPOSED IN SAID BALLAST CASE, SAID CAPACITOR INCLUDING A CAPACITOR ROLL HAVING ELECTRODES OF INTERLEAVED FOIL LAYERS AND A CONDUCTIVE CONTAINER FOR HOUSING SAID CAPACITOR AND DISPOSED IN CAPACITIVE RELATION WITH THE OUTER FOIL LAYER AND CIRCUIT MEANS FOR CONNECTING SAID CONTAINER IN ELEC-
References Cited (Backward Citations)
US2802143A
Cited
US2960624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |