GB429045A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB429045A GB429045A GB35738/33A GB3573833A GB429045A GB 429045 A GB429045 A GB 429045A GB 35738/33 A GB35738/33 A GB 35738/33A GB 3573833 A GB3573833 A GB 3573833A GB 429045 A GB429045 A GB 429045A
- Authority
- GB
- United Kingdom
- Prior art keywords
- end portion
- tube
- screen
- diameter
- cathode ray
- 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
- H01J29/861—Vessels or containers characterised by the form or the structure thereof
-
- 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
- H01J29/87—Arrangements for preventing or limiting effects of implosion of vessels or containers
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
429,045. Cathode-ray tubes. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, DUDDING, B. P., and JESTY, L. C., c/o General Electric Co., Wembley, Middlesex. Dec. 19, 1933, No. 35738. [Class 39 (i)] The envelope of a cathode ray tube which contains a fluorescent screen either on the end wall or separately has a conical or cylindrical portion a, Fig. 1, adjacent to an end portion b which surrounds the end c, and the end portion which is at least 15 cm. in diameter, has a radius of curvature everywhere so great that no part of it is in dangerous tension, that is, a tension exceeding two-thirds of the breaking stress of the material of the envelope. The ratio of the radius of curvature of the end portion b to that of the screen c is generally not less than 1 : 7À5, for example 1 : 5. The ratio of the maximum diameter of the tube to the diameter of that part of the screen on which an image can be reproduced is preferably no greater than 4:3. Dimensions of two examples of tube are given.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE406715D BE406715A (en) | 1933-12-19 | ||
NL49145D NL49145C (en) | 1933-12-19 | ||
GB35738/33A GB429045A (en) | 1933-12-19 | 1933-12-19 | Improvements in or relating to cathode ray tubes |
FR781725D FR781725A (en) | 1933-12-19 | 1934-11-23 | Cathode ray tube casings |
US755336A US2089546A (en) | 1933-12-19 | 1934-11-30 | Cathode ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35738/33A GB429045A (en) | 1933-12-19 | 1933-12-19 | Improvements in or relating to cathode ray tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB429045A true GB429045A (en) | 1935-05-23 |
Family
ID=10381027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35738/33A Expired GB429045A (en) | 1933-12-19 | 1933-12-19 | Improvements in or relating to cathode ray tubes |
Country Status (5)
Country | Link |
---|---|
US (1) | US2089546A (en) |
BE (1) | BE406715A (en) |
FR (1) | FR781725A (en) |
GB (1) | GB429045A (en) |
NL (1) | NL49145C (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2533334A (en) * | 1945-10-18 | 1950-12-12 | Philco Corp | Cathode-ray tube |
US2538852A (en) * | 1945-12-29 | 1951-01-23 | Rauland Corp | Kinescope projection by refractive optical system mounted on tube neck |
US2629838A (en) * | 1949-08-04 | 1953-02-24 | Technicolor Motion Picture | Color television screen with correction for overplay |
US2904713A (en) * | 1952-07-15 | 1959-09-15 | Heraeus Schott Quarzschmelze | Casings for gas discharge tubes and lamps and process |
US3128166A (en) * | 1953-11-25 | 1964-04-07 | Heraeus Schott Quarzschmelze | Process for producing quartz glass |
-
0
- BE BE406715D patent/BE406715A/xx unknown
- NL NL49145D patent/NL49145C/xx active
-
1933
- 1933-12-19 GB GB35738/33A patent/GB429045A/en not_active Expired
-
1934
- 1934-11-23 FR FR781725D patent/FR781725A/en not_active Expired
- 1934-11-30 US US755336A patent/US2089546A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR781725A (en) | 1935-05-21 |
BE406715A (en) | |
US2089546A (en) | 1937-08-10 |
NL49145C (en) |
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