GB655588A - Improvements in or relating to cathode-ray tubes - Google Patents
Improvements in or relating to cathode-ray tubesInfo
- Publication number
- GB655588A GB655588A GB23720/48A GB2372048A GB655588A GB 655588 A GB655588 A GB 655588A GB 23720/48 A GB23720/48 A GB 23720/48A GB 2372048 A GB2372048 A GB 2372048A GB 655588 A GB655588 A GB 655588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- wall
- layer
- screen
- sept
- 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
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
655,588. Cathode-ray tubes. PHILIPS ELECTRICAL, Ltd. Sept. 9, 1948, No. 23720. Convention date, Sept. 12, 1947. [Class 39 (i)] A cathode-ray tube, of the kind having an insulating wall 1 surrounding the space between two electrodes, has its cathode 2 secured to a cylindrical insulator 4 which fits inside the wall and which has on its surface adjacent the wall an adhesive conductive layer 7 which is connected either to the cathode or to a leading-out conductor. This layer tends to prevent undesirable discharges between the cathode and the wall, and as a further precaution against discharges a screen 9 connected to the layer 7 may be provided between the control electrode 6 and the first anode 3. The layer 7 is normally earthed and may be connected to the cathode if the cathode is at earth potential. The screen of the tube may be a luminescent screen or a thin metallic plate which is locally heated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL655588X | 1947-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB655588A true GB655588A (en) | 1951-07-25 |
Family
ID=19795220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23720/48A Expired GB655588A (en) | 1947-09-12 | 1948-09-09 | Improvements in or relating to cathode-ray tubes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2523099A (en) |
| DE (1) | DE814918C (en) |
| FR (1) | FR971541A (en) |
| GB (1) | GB655588A (en) |
| NL (1) | NL72660C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2701320A (en) * | 1950-05-26 | 1955-02-01 | Rca Corp | Electron gun structure and method for making the same |
| US2727176A (en) * | 1952-12-31 | 1955-12-13 | Westinghouse Electric Corp | Electrical discharge tube |
| US3034009A (en) * | 1960-01-18 | 1962-05-08 | Gen Electric | Pin seal accelerator tubes |
| US4585976A (en) * | 1982-01-19 | 1986-04-29 | Hewlett-Packard Company | Beam penetration CRT with internal automatic constant deflection factor and pattern correction |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB493790A (en) * | 1937-04-30 | 1938-10-14 | British Thomson Houston Co Ltd | Improvements in or relating to cathode ray devices |
| GB519111A (en) * | 1938-06-09 | 1940-03-18 | Pye Ltd | Improvements in and relating to cathode ray tubes |
| BE440695A (en) * | 1940-03-29 | |||
| US2379488A (en) * | 1943-10-08 | 1945-07-03 | Du Mont Allen B Lab Inc | Centering device for electron guns |
-
0
- NL NL72660D patent/NL72660C/xx active
-
1948
- 1948-07-29 US US41364A patent/US2523099A/en not_active Expired - Lifetime
- 1948-09-09 GB GB23720/48A patent/GB655588A/en not_active Expired
- 1948-09-10 FR FR971541D patent/FR971541A/en not_active Expired
- 1948-12-24 DE DEP26509D patent/DE814918C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR971541A (en) | 1951-01-18 |
| NL72660C (en) | |
| DE814918C (en) | 1951-09-27 |
| US2523099A (en) | 1950-09-19 |
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