GB549278A - Improvements in or relating to cathode-ray tubes of the wall coated type - Google Patents
Improvements in or relating to cathode-ray tubes of the wall coated typeInfo
- Publication number
- GB549278A GB549278A GB14892/41A GB1489241A GB549278A GB 549278 A GB549278 A GB 549278A GB 14892/41 A GB14892/41 A GB 14892/41A GB 1489241 A GB1489241 A GB 1489241A GB 549278 A GB549278 A GB 549278A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- coatings
- ray tubes
- relating
- coating
- 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
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
549,278. Cathode-ray tubes. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Nov. 19, 1941, No. 14892. [Class 39 (i)] Post-deflection acceleration is obtained by two wall coatings 3, 4 at 1000 and 4000 volts respectively and in order to reduce wall discharges, one or more narrow insulated strip coatings 9, 10, 11 are placed between them near and parallel to the edge of one coating, preferably the low potential one 3. The spaces 12, 13, 14 between the strips and the nearby coating may be coated with a slightly conductive material such as phosphoric acid. All the coatings are of the same material, such as graphite, silver or platinum. The high potential electrode 4 has a separate contact pin 8. The subject-matter is identical with that of Specification 33019/45, as open to inspection under Sect. 91.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL219295X | 1940-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB549278A true GB549278A (en) | 1942-11-13 |
Family
ID=19779250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14892/41A Expired GB549278A (en) | 1940-08-28 | 1941-11-19 | Improvements in or relating to cathode-ray tubes of the wall coated type |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE442585A (en) |
| CH (1) | CH219295A (en) |
| FR (1) | FR874888A (en) |
| GB (1) | GB549278A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2483457A (en) * | 1945-04-05 | 1949-10-04 | Du Mont Allen B Lab Inc | Cathode-ray tube |
-
1941
- 1941-08-26 FR FR874888D patent/FR874888A/en not_active Expired
- 1941-08-26 CH CH219295D patent/CH219295A/en unknown
- 1941-08-28 BE BE442585A patent/BE442585A/xx unknown
- 1941-11-19 GB GB14892/41A patent/GB549278A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2483457A (en) * | 1945-04-05 | 1949-10-04 | Du Mont Allen B Lab Inc | Cathode-ray tube |
Also Published As
| Publication number | Publication date |
|---|---|
| FR874888A (en) | 1942-08-28 |
| BE442585A (en) | 1941-09-30 |
| CH219295A (en) | 1942-01-31 |
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