GB706326A - Improvements in or relating to electric lamps - Google Patents
Improvements in or relating to electric lampsInfo
- Publication number
- GB706326A GB706326A GB28179/50A GB2817950A GB706326A GB 706326 A GB706326 A GB 706326A GB 28179/50 A GB28179/50 A GB 28179/50A GB 2817950 A GB2817950 A GB 2817950A GB 706326 A GB706326 A GB 706326A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- filament
- antimony trioxide
- nov
- per cent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
- H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
- H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter
Landscapes
- Discharge Lamp (AREA)
Abstract
706,326. Producing high vacua. LUMALAMPAN AKTIEBOLAG. Nov. 17, 1950 [Nov. 23, 1949], No. 28179/50. Class 8 (1). [Also in Groups XI and XL (a)] An electric incandescent lamp, or a discharge lamp provided with a filament as a supplementary light source, contains an alkali-combining getter, e.g. antimony trioxide, for the purpose of suppressing and neutralising alkali in a free state within the lamp, thereby avoiding flashover when in operation and also reducing brittleness of the filament. The antimony trioxide may be applied to the filament either alone or mixed with other getters; alternatively it may be sprayed on the lamp foot or contained in a separate holder and heated in known manner by induced high frequency current. It is stated that the inclusion of antimony trioxide enables the nitrogen content of an argon nitrogen filled lamp to be reduced from a normal 17 per cent to less than 10 per cent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE290124X | 1949-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB706326A true GB706326A (en) | 1954-03-31 |
Family
ID=20307220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28179/50A Expired GB706326A (en) | 1949-11-23 | 1950-11-17 | Improvements in or relating to electric lamps |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE499326A (en) |
| CH (1) | CH290124A (en) |
| FR (1) | FR1027206A (en) |
| GB (1) | GB706326A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422009A (en) * | 1982-04-28 | 1983-12-20 | Gte Products Corporation | Tungsten-halogen incandescent lamp containing additive to reduce filament sag |
-
0
- BE BE499326D patent/BE499326A/xx unknown
-
1950
- 1950-10-30 CH CH290124D patent/CH290124A/en unknown
- 1950-11-04 FR FR1027206D patent/FR1027206A/en not_active Expired
- 1950-11-17 GB GB28179/50A patent/GB706326A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1027206A (en) | 1953-05-08 |
| CH290124A (en) | 1953-04-15 |
| BE499326A (en) |
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