GB1420111A - Tungsten-bromine cycle lamp - Google Patents
Tungsten-bromine cycle lampInfo
- Publication number
- GB1420111A GB1420111A GB3003773A GB3003773A GB1420111A GB 1420111 A GB1420111 A GB 1420111A GB 3003773 A GB3003773 A GB 3003773A GB 3003773 A GB3003773 A GB 3003773A GB 1420111 A GB1420111 A GB 1420111A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boron
- bromine
- gas
- june
- tungsten
- 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
- H01K1/50—Selection of substances for gas fillings; Specified pressure thereof
Landscapes
- Discharge Lamp (AREA)
Abstract
1420111 Incandescent electric lamp PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 25 June 1973 [28 June 1972] 30037/73 Heading H1F A regenerative cycle incandescent electric lamp comprises a tungsten filament, a gas filling comprising hydrogen and bromine in an atomic ratio of at least 1, and boron, wherein the quantity of gram atoms of boron in the gas atmosphere is less than 10% of the quantity of gram atoms of bromine and is at least equal to the quantity which corresponds to the vapour pressure above solid boron at a temperature of 200‹ C. The boron may be introduced as solid boron, e.g. a wire, on the wall of the lamp envelope at a place where the wall temperature is between 200 and 500‹ C. Alternatively a gaseous boron compound may be introduced with the fill gas, e.g. diborane, tetraborane, pentaborane, hexaborane or borazine. The fill gas may be N 2 , Ar, Kr or Xe or a mixture thereof together with HBr, CH 2 Br 2 , CH 3 Br or CHBr 3 .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7208874A NL7208874A (en) | 1972-06-28 | 1972-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1420111A true GB1420111A (en) | 1976-01-07 |
Family
ID=19816394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3003773A Expired GB1420111A (en) | 1972-06-28 | 1973-06-25 | Tungsten-bromine cycle lamp |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS552706B2 (en) |
| BE (1) | BE801467A (en) |
| DE (1) | DE2329691A1 (en) |
| FR (1) | FR2191264B1 (en) |
| GB (1) | GB1420111A (en) |
| IT (1) | IT989450B (en) |
| NL (1) | NL7208874A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55149975U (en) * | 1979-04-13 | 1980-10-29 | ||
| JPS5911966Y2 (en) * | 1979-11-30 | 1984-04-11 | 株式会社 泉井鉄工所 | Longline main line entanglement prevention device |
-
1972
- 1972-06-28 NL NL7208874A patent/NL7208874A/xx not_active Application Discontinuation
-
1973
- 1973-06-09 DE DE19732329691 patent/DE2329691A1/en not_active Withdrawn
- 1973-06-25 JP JP7090473A patent/JPS552706B2/ja not_active Expired
- 1973-06-25 GB GB3003773A patent/GB1420111A/en not_active Expired
- 1973-06-25 IT IT2581173A patent/IT989450B/en active
- 1973-06-26 BE BE132745A patent/BE801467A/en unknown
- 1973-06-26 FR FR7323347A patent/FR2191264B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE801467A (en) | 1973-12-26 |
| FR2191264B1 (en) | 1976-11-12 |
| FR2191264A1 (en) | 1974-02-01 |
| JPS4957685A (en) | 1974-06-04 |
| IT989450B (en) | 1975-05-20 |
| DE2329691A1 (en) | 1974-01-17 |
| JPS552706B2 (en) | 1980-01-22 |
| NL7208874A (en) | 1974-01-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |