GB599498A - Improvements in electric discharge tubes - Google Patents
Improvements in electric discharge tubesInfo
- Publication number
- GB599498A GB599498A GB2236/45A GB223645A GB599498A GB 599498 A GB599498 A GB 599498A GB 2236/45 A GB2236/45 A GB 2236/45A GB 223645 A GB223645 A GB 223645A GB 599498 A GB599498 A GB 599498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- coating
- coiled
- filling
- filaments
- 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
599,498. Discharge lamps. LUMALAMPAN AKTIEBOLAG. Jan. 29, 1945, No. 2236. Convention date, July 12, 1943. [Class 39 (i)] In a discharge device with gas and/or vapour filling, especially a fluorescent lamp, the electrodes consist of coiled or coiled coil filaments 4 and are activated by an alkaline earth metal compound in the form of a coating applied solely at the points 3, 5 where the filaments 4 are secured to the leading-in wires 2, G, and the coating is supported on discs, bowls, or sleeves 8, 9 ; the electrodes 4 are directly heated at least during starting, but may be directly heated or self-heated during operation. In addition, the fastened ends of the electrodes 4 may be wound with a metal netting or thin coiled wire if relatively large quantities of emissive substance are used. The inside of the envelope may be provided with a fluorescent coating and the filling is mercury and a suitable gas mixture. Specification 434,276 is referred to. The Specification as open to inspection under Sect. 91 describes a modified form in which the supports 8, 9, are dispensed with. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE599498X | 1943-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB599498A true GB599498A (en) | 1948-03-15 |
Family
ID=20312790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2236/45A Expired GB599498A (en) | 1943-07-12 | 1945-01-29 | Improvements in electric discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB599498A (en) |
-
1945
- 1945-01-29 GB GB2236/45A patent/GB599498A/en not_active Expired
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