GB430975A - Improvements in or relating to electric discharge tubes - Google Patents
Improvements in or relating to electric discharge tubesInfo
- Publication number
- GB430975A GB430975A GB10723/35A GB1072335A GB430975A GB 430975 A GB430975 A GB 430975A GB 10723/35 A GB10723/35 A GB 10723/35A GB 1072335 A GB1072335 A GB 1072335A GB 430975 A GB430975 A GB 430975A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- discharge
- electrode
- helices
- turn
- 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
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
Landscapes
- Discharge Lamp (AREA)
Abstract
430,975. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS'GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. April 6, 1935, No. 10723. Convention date, June 4, 1934. [Class 39 (i)] In a lamp-more particularly with a high pressure metal vapour discharge-the electrodes 2, 3, are in the form of helices closed on themselves by parts passing through the centre of the helices, and each with the turn 5 remote from the discharge of larger diameter than the other turns; a large current may thereby be induced in the electrodes to drive out occluded gases. The electrode at the end near the pinch 6 may have its turn 5 flattened in one direction so that it may be placed close to the end of the tube which is also narrowed at this point. The electrodes have a tungsten core on which a thin wire is helically wound, a coating of electron emitting oxide being placed thereon. The electrodes are supported by wires 7 surrounded by insulating tubes 8; an auxiliary starting electrode consisting of a thin tungsten rod is placed near the electrode 2. The filling consists of neon and mercury vapour in unsaturated state.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE430975X | 1934-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB430975A true GB430975A (en) | 1935-06-27 |
Family
ID=6483859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10723/35A Expired GB430975A (en) | 1934-06-04 | 1935-04-06 | Improvements in or relating to electric discharge tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2087748A (en) |
| FR (1) | FR790768A (en) |
| GB (1) | GB430975A (en) |
| NL (1) | NL41671C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974049C (en) * | 1940-12-24 | 1960-08-25 | Patra Patent Treuhand | High pressure metal vapor discharge lamp |
| US3290538A (en) * | 1961-05-23 | 1966-12-06 | Westinghouse Electric Corp | Low-pressure electric discharge lamp with internal elongated structure that modifiesthe diffusion length of the discharge and improves the lamp performance |
-
0
- NL NL41671D patent/NL41671C/xx active
-
1935
- 1935-04-06 GB GB10723/35A patent/GB430975A/en not_active Expired
- 1935-05-31 US US24449A patent/US2087748A/en not_active Expired - Lifetime
- 1935-05-31 FR FR790768D patent/FR790768A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974049C (en) * | 1940-12-24 | 1960-08-25 | Patra Patent Treuhand | High pressure metal vapor discharge lamp |
| US3290538A (en) * | 1961-05-23 | 1966-12-06 | Westinghouse Electric Corp | Low-pressure electric discharge lamp with internal elongated structure that modifiesthe diffusion length of the discharge and improves the lamp performance |
Also Published As
| Publication number | Publication date |
|---|---|
| FR790768A (en) | 1935-11-27 |
| US2087748A (en) | 1937-07-20 |
| NL41671C (en) |
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