US3080503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballast apparatus for starting and operating gaseous discharge lamps
Assignee: General Electric Co
•
Filing: 1961-06-01
•
Granted: 1963-03-05
•
Expires: 1981-06-01
Abstract
No abstract record available.
Inventors
- 👤 Wesley W Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:41
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/232; H05B41/2325; Y; Y10; Y10S; Y10S315/00; Y10S315/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A BALLAST APPARATUS FOR STARTING AND OPERATING AT LEAST A PAIR OF GASEOUS DISCHARGE LAMPS FROM AN ALTERNATING CURRENT SUPPLY COMPRISING A TRANSFORMER HAVING A MAGNETIC CORE, A PRIMARY WINDING AND A SECONDARY WINDING INDUCTIVELY COUPLED THEREWITH, A PAIR OF INPUT TERMINAL LEADS CONNECTED ACROSS SAID PRIMARY WINDING, A CAPACITOR CONNECTED IN SERIES CIRCUIT RELATIONSHIP WITH SAID SECONDARY WINDING, SAID CAPACITOR INCLUDING A CAPACITOR ROLL HAVING AN OUTER FOIL AND DISPOSED IN AN ELECTRICALLY CONDUCTIVE CASE FILLED WITH A DIELECTRIC MATERIAL, CIRCUIT MEANS INCLUDING ELECTRICAL LEADS FOR APPLYING THE OUTPUT OF SAID TRANSFORMER ACROSS SAID PAIR OF LAMPS AND FOR CONNECTING THE CAPACITANCE DEVELOPED BETWEEN SAID CONDUCTIVE CASE AND THE OUTER FOIL OF SAID CAPACITOR IN SHUNT ACROSS ONE OF SAID LAMPS TO AID IN STARTING SAID PAIR OF LAMPS.
Claim 2
Dependent Claim
130 words
A BALLAST APPARATUS FOR STARTING AND OPERATING AT LEAST A PAIR OF GASEOUS DISCHARGE LAMPS FROM AN ALTERNATING CURRENT SUPPLY COMPRISING A TRANSFORMER HAVING A MAGNETIC CORE, A PRIMARY WINDING AND A SECONDARY WINDING INDUCTIVELY COUPLED THEREWITH, A PAIR OF INPUT TERMINAL LEADS CONNECTED ACROSS SAID PRIMARY WINDING, A CAPACITOR CONNECTED IN SERIES CIRCUIT RELATIONSHIP WITH SAID SECONDARY WINDING, SAID CAPACITOR INCLUDING A CAPACITOR ROLL HAVING AN OUTER FOIL AND DISPOSED IN AN ELECTRICALLY CONDUCTIVE CASE FILLED WITH A DIELECTRIC MATERIAL, CIRCUIT MEANS INCLUDING ELECTRICAL LEADS FOR APPLYING THE OUTPUT OF SAID TRANSFORMER ACROSS SAID PAIR OF LAMPS AND FOR CONNECTING THE CAPACITANCE DEVELOPED BETWEEN SAID CONDUCTIVE CASE AND THE OUTER FOIL OF SAID CAPACITOR IN SHUNT ACROSS ONE OF SAID LAMPS TO AID IN STARTING SAID PAIR OF LAMPS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |