US3250956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballasts with integrally insulated base
Assignee: General Electric Co
•
Filing: 1963-10-23
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Granted: 1966-05-10
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Lovinger Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:21
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/02; Y; Y10; Y10S; Y10S174/00; Y10S174/02; Y10S315/00; Y10S315/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A BALLAST FOR STARTING AND OPERATING ELECTRIC DISCHARGE LAMPS, SAID BALLAST HAVING AN ELONGATED BALLAST CASE FORMED WITH FOUR WALLS AND A PAIR OF END WALLS, AND HAVING COMPONENTS INCLUDING AT LEAST A CAPACITOR, A LAMINATED MAGNETIC CORE WITH ELECTRICAL COILS DISPOSED THEREON, AND ELECTRICAL LEADS CONNECTING THE COILS AND THE CAPACITOR IN OPERATIVE CIRCUIT RELATION, SAID COMPONENTS BEING POSITIONED IN SAID BALLAST CASE, THE IMPROVEMENT COMPRISING: AN INTEGRAL FILM OF ELECTRICALLY INSULATING AND THERMALLY CONDUCTING RESIN MATERIAL FORMED ON THE INNER SURFACE OF AT LEAST OF SAID WALLS, SAID INTEGRAL FILM BEING DISPOSED BETWEEN SAID INNER SURFACE ND THE SIDE OF SAID
Claim 2
Dependent Claim
104 words
IN A BALLAST FOR STARTING AND OPERATING ELECTRIC DISCHARGE LAMPS, SAID BALLAST HAVING AN ELONGATED BALLAST CASE FORMED WITH FOUR WALLS AND A PAIR OF END WALLS, AND HAVING COMPONENTS INCLUDING AT LEAST A CAPACITOR, A LAMINATED MAGNETIC CORE WITH ELECTRICAL COILS DISPOSED THEREON, AND ELECTRICAL LEADS CONNECTING THE COILS AND THE CAPACITOR IN OPERATIVE CIRCUIT RELATION, SAID COMPONENTS BEING POSITIONED IN SAID BALLAST CASE, THE IMPROVEMENT COMPRISING: AN INTEGRAL FILM OF ELECTRICALLY INSULATING AND THERMALLY CONDUCTING RESIN MATERIAL FORMED ON THE INNER SURFACE OF AT LEAST OF SAID WALLS, SAID INTEGRAL FILM BEING DISPOSED BETWEEN SAID INNER SURFACE ND THE SIDE OF SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |