GB500943A - Cathode-ray tubes, especially for television - Google Patents
Cathode-ray tubes, especially for televisionInfo
- Publication number
- GB500943A GB500943A GB1112/39A GB111239A GB500943A GB 500943 A GB500943 A GB 500943A GB 1112/39 A GB1112/39 A GB 1112/39A GB 111239 A GB111239 A GB 111239A GB 500943 A GB500943 A GB 500943A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- cathode
- metal tube
- ray tubes
- aug
- 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
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
500,943. Cathode-ray tubes. MICHAELIS, E. Aug. 17, 1937, Nb. 1112/39. Convention date, Aug. 28, 1936. Divided out of 491,050. [Class 39 (i)] The cathode consists of an insulating-tube G in which the heating filament C is longitudinally arranged, and the tube is surrounded by a metal tube D having one flat side B, which faces the screen and is coated with emissive oxide. In other forms, the insulating tube, which may consist of porcelain or quartz, may have a flat side corresponding to the side B of the metal tube, or both tubes G, D may be of triangular cross-section. All the sides of a triangular metal tube may be coated with emissive oxide, and the electrons from the sides remote from the screen may be deflected by suitable plates to join the main stream, or may impinge upon surfaces to release secondary electrons which join the main electron stream.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE500943X | 1936-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB500943A true GB500943A (en) | 1939-02-17 |
Family
ID=6545694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1112/39A Expired GB500943A (en) | 1936-08-28 | 1937-08-17 | Cathode-ray tubes, especially for television |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB500943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2674987A1 (en) * | 1989-08-18 | 1992-10-09 | Osaulenko Nikolai | Assembly for heating a thermoelectronic (thermionic) cathode for electron beam devices |
-
1937
- 1937-08-17 GB GB1112/39A patent/GB500943A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2674987A1 (en) * | 1989-08-18 | 1992-10-09 | Osaulenko Nikolai | Assembly for heating a thermoelectronic (thermionic) cathode for electron beam devices |
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