US3912960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogen lamp with internal molybdenum parts
Assignee: General Electric Co
•
Filing: 1974-06-21
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Granted: 1975-10-14
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Expires: 1994-06-21
Abstract
Abstract A regenerative cycle incandescent lamp containing bromine or iodine as a halogen has a mount structure all of which is made of a highly ductile molybdenum. The particular molybdenum has a percentage of elongation which is greater than 20%.
Inventors
- 👤 George K Danko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:16
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18; H01K1/20; H01K1/50; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A REGENERATIVE CYCLE INCANDESCENT HALOGEN LAMP COMPRISING AN ENVELOPE OF VITREOUS MATERIAL WITH AT LEAST ONE PINCH SEAL, AND A MOUNT STRUCTURE, SAID MOUNT STRUCTURE HAVING OUTER LEAD-IN WIRES CONNECTED TO FOILS WHICH ARE HEMETICALLY SEALED IN SAID PINCH SEAL, INNER LEAD WIRES CONNECTED TO AN INCANDESCIBLE TUNGSTEN FILAMENT AT ONE END AND TO THE MOLYBDENUM FOILS AT THE OTHER END, SAID ENVELOPE BEING FILLED WITH A INERT GAS AND A HALOGEN GAS SELECTED FROM THE GROUP COMPRISING IODINE AND BROMINE WHEREIN THE IMPROVEMENT COMPRISES THAT THE INNER LEADS OF THE MOUNT STRUCTURE ARE MADE OF A HIGHLY DUCTILE MOLYBDENUM BETTER THEN 99.95% MOLBDENUM AND HAVING A MINIMUM OF 20% ELONGATION.
Claim 2
Dependent Claim
111 words
A REGENERATIVE CYCLE INCANDESCENT HALOGEN LAMP COMPRISING AN ENVELOPE OF VITREOUS MATERIAL WITH AT LEAST ONE PINCH SEAL, AND A MOUNT STRUCTURE, SAID MOUNT STRUCTURE HAVING OUTER LEAD-IN WIRES CONNECTED TO FOILS WHICH ARE HEMETICALLY SEALED IN SAID PINCH SEAL, INNER LEAD WIRES CONNECTED TO AN INCANDESCIBLE TUNGSTEN FILAMENT AT ONE END AND TO THE MOLYBDENUM FOILS AT THE OTHER END, SAID ENVELOPE BEING FILLED WITH A INERT GAS AND A HALOGEN GAS SELECTED FROM THE GROUP COMPRISING IODINE AND BROMINE WHEREIN THE IMPROVEMENT COMPRISES THAT THE INNER LEADS OF THE MOUNT STRUCTURE ARE MADE OF A HIGHLY DUCTILE MOLYBDENUM BETTER THEN 99.95% MOLBDENUM AND HAVING A MINIMUM OF 20% ELONGATION.
Claim 3
Dependent Claim
29 words
The lamp claimed in claim 1 wherein said mount structure contains a filament support made of highly ductile molybdenum having a percentage of elongation which is equal to 20.
Claim 4
Dependent Claim
13 words
A lamp as claimed in claim 1 wherein said halogen gas is iodine.
Claim 5
Dependent Claim
17 words
The lamp claimed in claim 3 wherein said iodine is added to said lamp as methyl iodide.
Claim 6
Dependent Claim
11 words
The lamp claimed in claim 1 wherein said halogen is bromine.
Claim 7
Dependent Claim
17 words
The lamp claimed in claim 5 wherein said bromine is added to said lamp as methyl bromide.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |