US3403280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-ended electric incandescent lamp filament support
Assignee: General Electric Co
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Filing: 1966-03-04
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Granted: 1968-09-24
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Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 Jr John G Cardwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:41
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A SINGLE-ENDED ELECTRIC INCANDESCENT LAMP COMPRISING A GENERALLY TUBULAR BULB OF VITREOUS MATERIAL HAVING A PINCH SEAL AT ONE END, A PAIR OF LEAD-IN CONDUCTORS EXTENDING THROUGH SAID PINCH SEAL, A COILED FILAMENT EXTENDING LONGITUDINALLY OF SAID BULB AND HAVING A LEG PORTION AT ONE END CONNECTED TO ONE OF SAID LEAD-IN CONDUCTORS, AND A GENERALLY U-SHAPED SUPPORT MEMBER COMPRISING AN INTERMEDIATE BEND PORTION TO WHICH THE OTHER END OF SAID FILAMENT IS CONNECTED, AND SIDE LEG PORTIONS OF SAID SUPPORT MEMBER EXTENDING LONGITUDINALLY DOWNWARDLY FROM SAID INTERMEDIATE PORTION AND BEARING AGAINST THE INNER WALL OF THE BULB, ONE OF SAID SIDE LEG PORTIONS EXTENDING INTO SAID PINCH SEAL AND CONNECTED TO THE OTHER LEAD-IN CONDUCTOR, THE OTHER SIDE LEG PORTION EXTENDING INTO AND TERMINATING WITHIN SAID PINCH SEAL.
Claim 2
Dependent Claim
129 words
A SINGLE-ENDED ELECTRIC INCANDESCENT LAMP COMPRISING A GENERALLY TUBULAR BULB OF VITREOUS MATERIAL HAVING A PINCH SEAL AT ONE END, A PAIR OF LEAD-IN CONDUCTORS EXTENDING THROUGH SAID PINCH SEAL, A COILED FILAMENT EXTENDING LONGITUDINALLY OF SAID BULB AND HAVING A LEG PORTION AT ONE END CONNECTED TO ONE OF SAID LEAD-IN CONDUCTORS, AND A GENERALLY U-SHAPED SUPPORT MEMBER COMPRISING AN INTERMEDIATE BEND PORTION TO WHICH THE OTHER END OF SAID FILAMENT IS CONNECTED, AND SIDE LEG PORTIONS OF SAID SUPPORT MEMBER EXTENDING LONGITUDINALLY DOWNWARDLY FROM SAID INTERMEDIATE PORTION AND BEARING AGAINST THE INNER WALL OF THE BULB, ONE OF SAID SIDE LEG PORTIONS EXTENDING INTO SAID PINCH SEAL AND CONNECTED TO THE OTHER LEAD-IN CONDUCTOR, THE OTHER SIDE LEG PORTION EXTENDING INTO AND TERMINATING WITHIN SAID PINCH SEAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |