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Patent US4128783A successfully refreshed from Google Patents.
US4128783A
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Tungsten/bromine cycle lamp
Assignee: US Philips Corp
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Filing: 1977-04-18
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Granted: 1978-12-05
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Expires: 1997-04-18
Abstract
Abstract A tungsten/bromine cycle lamp having a metal getter containing compounds of the formula Me NH x Br x+1 , Ta Br 5 C 5 H 5 N or the decompositions products thereof. These compounds can be accurately dosed. They present the advantage that getter and reactive gas can be introduced into the lamp in mutually matched quantities and in one operation.
Inventors
- 👤 Henricus F. J. I. Giller
- 👤 Germain R. T'Jampens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:38
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/52; H01K1/54; H01K1/56
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A tungsten/bromine cycle lamp having a transparent lamp vessel and further including the following disposed in said envelope: a tungsten filament; a getter selected from the group consisting of Ti, Zr, Nb, Ta, V and Hf; a gas mixture containing inert gas, hydrogen and bromine; and a compound of the formula Me NH x Br y C z or decomposition products thereof, in which formula z has the value 0, Me is selected from the group consisting of vanadium, niobium, and tantalum, x = 1, 2 or 3 and y = x + 1, or Me is selected from the group consisting of titanium, zirconium, and hafnium, and x = 1 or 2 and y = x + 1.
Claim 2
Dependent Claim
119 words
A tungsten/bromine cycle lamp having a transparent lamp vessel and further including the following disposed in said envelope: a tungsten filament; a getter selected from the group consisting of Ti, Zr, Nb, Ta, V and Hf; a gas mixture containing inert gas, hydrogen and bromine; and a compound of the formula Me NH x Br y C z or decomposition products thereof, in which formula z has the value 0, Me is selected from the group consisting of vanadium, niobium, and tantalum, x = 1, 2 or 3 and y = x + 1, or Me is selected from the group consisting of titanium, zirconium, and hafnium, and x = 1 or 2 and y = x + 1.
Claim 3
Dependent Claim
79 words
A tungsten/bromine cycle lamp having a transparent lamp vessel further including the following disposed in said envelope: a tungsten filament; a getter selected from the group consisting of Ti, Zr, Nb, Ta, V and Hf; a gas mixture containing inert gas, hydrogen and bromine; and a compound of the formula Me NH x Br y C z or decomposition products thereof, in which formula z has the value 5 and Me is tantalum and x = y = 5.
Claim 4
Dependent Claim
79 words
A tungsten/bromine cycle lamp having a transparent lamp vessel further including the following disposed in said envelope: a tungsten filament; a getter selected from the group consisting of Ti, Zr, Nb, Ta, V and Hf; a gas mixture containing inert gas, hydrogen and bromine; and a compound of the formula Me NH x Br y C z or decomposition products thereof, in which formula z has the value 5 and Me is tantalum and x = y = 5.
Claim 5
Dependent Claim
27 words
A tungsten/bromine cycle lamp as claimed in claim 2 further including Ta Br 5 C 5 H 5 N or decomposition products thereof disposed in said envelope.
References Cited (Backward Citations)
US3810685A
Cited
US3829731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |