GB524574A - Improvements in high-pressure metal-vapour electric discharge devices - Google Patents
Improvements in high-pressure metal-vapour electric discharge devicesInfo
- Publication number
- GB524574A GB524574A GB339039A GB339039A GB524574A GB 524574 A GB524574 A GB 524574A GB 339039 A GB339039 A GB 339039A GB 339039 A GB339039 A GB 339039A GB 524574 A GB524574 A GB 524574A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- helix
- electric discharge
- discharge devices
- pressure metal
- 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
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
524,574. Metal-vapour apparatus. GENERAL ELECTRIC CO., Ltd., FRANCIS, V. J., and KETTLEWELL, E. Feb. 1, 1939, No. 3390. Addition to 504,120. [Class 39 (i)] The electrode structure described in the parent Specification is supported by a rod 9 which projects inwardly from the seal 10 and is embraced by the helix 8 which connects the thermionically active part 7 of the electrode with the refractory part 6. The part 6 is of rod-like shape but may have an enlarged head 5, and the structure may be stiffened by tungsten wires 12, Fig. 2, overlying the helix 8 and held in place by an additional outer helix 13. The seal 10 may be formed by collapsing a quartz tube over a molybdenum strip 11 and the end of the rod 9 connected by an intervening molybdenum strip 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB339039A GB524574A (en) | 1939-02-01 | 1939-02-01 | Improvements in high-pressure metal-vapour electric discharge devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB339039A GB524574A (en) | 1939-02-01 | 1939-02-01 | Improvements in high-pressure metal-vapour electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB524574A true GB524574A (en) | 1940-08-09 |
Family
ID=9757428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB339039A Expired GB524574A (en) | 1939-02-01 | 1939-02-01 | Improvements in high-pressure metal-vapour electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB524574A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0269957A2 (en) * | 1986-12-01 | 1988-06-08 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High-pressure discharge lamp having a single pinch |
-
1939
- 1939-02-01 GB GB339039A patent/GB524574A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0269957A2 (en) * | 1986-12-01 | 1988-06-08 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High-pressure discharge lamp having a single pinch |
| EP0269957A3 (en) * | 1986-12-01 | 1989-10-18 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh | High-pressure discharge lamp having a single pinch |
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