US3211950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric incandescent lamp with integral fuse
Assignee: General Electric Co
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Filing: 1963-02-20
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Granted: 1965-10-12
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John G Cardwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:04
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18; H01K1/24; H01K1/62; H01K1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
AN ELECTRIC INCANDESCENT LAMP COMPRISING AN ELONGATED ENVELOPE OF VITREOUS MATERIAL HAVING PINCH SEALS AT ITS ENDS, A HELICALLY COILED TUNGSTEN WIRE FILAMENT EXTENDING LONGITUDINALLY OF SAID ENVELOPE, LEAD-IN CONDUCTORS HERMETICALLY SEALED IN RESPECTIVE SAID PINCH SEALS AND EXTENDING EXTERIORLY THEREOF AND ELECTRICALLY CONNECTED TO RESPECTIVE ENDS OF SAID FILAMENT, AT LEAST ONE OF SAID LEADIN CONDUCTORS TERMINATING WITH ITS ASSOCIATED PINCH SEAL, THE END OF THE FILAMENT ASSOCIATED WITH SAID ONE LEAD-IN CONDUCTOR TERMINATING IN AN INTEGRAL STRAIGHT WIRE FUSE LEG PORTION WHICH EXTENDS FROM THE INTERIOR OF THE ENVELOPE DIRECTLY INTO THE ASSOCIATED PINCH SEAL AND IS CONNECTED TO SAID ONE LEAD-IN CONDUCTOR WITHIN SAID PINCH SEAL, AND A WIRE SUPPORT MEMBER HAVING ONE END EMBEDDED IN THE LAST-MENTIONED PINCH SEAL IN SPACED INSULATED RELATION TO THE SAID ONE LEAD-IN CONDUCTOR AND HAVING ITS OTHER END FIRMLY ENGAGING THE COILED PORTION OF SAID FILAMENT IMMEDIATELY ADJACENT TO SAID STRAIGHT WIRE FUSE LEG PORTION WHEREBY TO RELIEVE SAID STRAIGHT WIRE FUSE LEG PORTION OF MECHANICAL STRESS.
Claim 2
Dependent Claim
167 words
AN ELECTRIC INCANDESCENT LAMP COMPRISING AN ELONGATED ENVELOPE OF VITREOUS MATERIAL HAVING PINCH SEALS AT ITS ENDS, A HELICALLY COILED TUNGSTEN WIRE FILAMENT EXTENDING LONGITUDINALLY OF SAID ENVELOPE, LEAD-IN CONDUCTORS HERMETICALLY SEALED IN RESPECTIVE SAID PINCH SEALS AND EXTENDING EXTERIORLY THEREOF AND ELECTRICALLY CONNECTED TO RESPECTIVE ENDS OF SAID FILAMENT, AT LEAST ONE OF SAID LEADIN CONDUCTORS TERMINATING WITH ITS ASSOCIATED PINCH SEAL, THE END OF THE FILAMENT ASSOCIATED WITH SAID ONE LEAD-IN CONDUCTOR TERMINATING IN AN INTEGRAL STRAIGHT WIRE FUSE LEG PORTION WHICH EXTENDS FROM THE INTERIOR OF THE ENVELOPE DIRECTLY INTO THE ASSOCIATED PINCH SEAL AND IS CONNECTED TO SAID ONE LEAD-IN CONDUCTOR WITHIN SAID PINCH SEAL, AND A WIRE SUPPORT MEMBER HAVING ONE END EMBEDDED IN THE LAST-MENTIONED PINCH SEAL IN SPACED INSULATED RELATION TO THE SAID ONE LEAD-IN CONDUCTOR AND HAVING ITS OTHER END FIRMLY ENGAGING THE COILED PORTION OF SAID FILAMENT IMMEDIATELY ADJACENT TO SAID STRAIGHT WIRE FUSE LEG PORTION WHEREBY TO RELIEVE SAID STRAIGHT WIRE FUSE LEG PORTION OF MECHANICAL STRESS.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |