GB445087A - Improvements in and relating to electric discharge devices - Google Patents
Improvements in and relating to electric discharge devicesInfo
- Publication number
- GB445087A GB445087A GB25675/35A GB2567535A GB445087A GB 445087 A GB445087 A GB 445087A GB 25675/35 A GB25675/35 A GB 25675/35A GB 2567535 A GB2567535 A GB 2567535A GB 445087 A GB445087 A GB 445087A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- grid
- metal
- leads
- plate
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/02—Electron-emitting electrodes; Cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
Abstract
445,087. Discharge apparatus. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 16, 1935, No. 25675. Convention date, Sept. 15, 1934. [Class 39 (i)] A device comprises a metal envelope containing cathode, grid and anode, the leads of which are taken out through the same end of the envelope, and a metal barrier is interposed between the grid and anode leads. In one form, a metal plate 20 is mounted between the anode lead 15 and the leads 12 of the heater, 13 of the cathode 13 and 14 of the grid. The plate 20 may be welded to the metal envelope 1 and extends from the metal header 2 closing the envelope to the lower of two mica spacers 9. The screen grid posts 8 carry caps 11, the lower of which is in contact with the shield 20 and therefore with the envelope. The shield 20 may be insulated from the screen grid or the envelope or both and given any desired potential. A shield 21 outside the envelope may further screen the leads. In a modification, a flat plate may be used, engaging a flat member closing the envelope and the underside of the lower plate 11.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US445087XA | 1934-09-15 | 1934-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB445087A true GB445087A (en) | 1936-04-02 |
Family
ID=21932768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25675/35A Expired GB445087A (en) | 1934-09-15 | 1935-09-16 | Improvements in and relating to electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB445087A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE764008C (en) * | 1938-06-09 | 1945-01-11 | Philips Patentverwaltung | Electric discharge tubes |
| DE763641C (en) * | 1938-06-16 | 1953-10-12 | Aeg | Electrical discharge vessel with metal wall and electrode system arranged parallel to the tube axis |
-
1935
- 1935-09-16 GB GB25675/35A patent/GB445087A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE764008C (en) * | 1938-06-09 | 1945-01-11 | Philips Patentverwaltung | Electric discharge tubes |
| DE763641C (en) * | 1938-06-16 | 1953-10-12 | Aeg | Electrical discharge vessel with metal wall and electrode system arranged parallel to the tube axis |
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