GB743200A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB743200A GB743200A GB691/53A GB69153A GB743200A GB 743200 A GB743200 A GB 743200A GB 691/53 A GB691/53 A GB 691/53A GB 69153 A GB69153 A GB 69153A GB 743200 A GB743200 A GB 743200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- gun
- strip
- coating
- cathode
- 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
-
- 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
-
- 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
- H01J29/96—One or more circuit elements structurally associated with the tube
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/88—Coatings
- H01J2229/882—Coatings having particular electrical resistive or conductive properties
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
743,200. Cathode-ray tubes. RAULAND CORPORATION. Jan. 9, 1953 [Jan. 9, 1952], No. 691/53. Class 39 (1). A cathode-ray receiving tube has a first conductive wall coating 22 between the gun and fluorescent screen, a second conductive wall coating 40 encompassing at least some of the gun electrodes and at least one bi-metal strip 41 secured to one of the gun electrodes and arranged to make contact with coating 40 under normal operating conditions and to be withdrawn from contact when a foreseen rise in temperature occurs during the manufacture of the tube, as during sealing in of the gun and degassing. In this way risk of fracture of the envelope due to unequal heating of the envelope and bi-metal strip is avoided. Bi-metal spring strips 41, of which there may one or any desired number, may be made of an alloy of 22 per cent Ni, 3 per cent Cr, 75 per cent Fe, or 72 per cent Mn, 18 per cent Cu, 10 per cent Ni (for strip 42) and 36 per cent Ni, 64 per cent Fe (for strip 43). The electrode structure preferably incorporates an ion trap and a " unipotential " electron lens as described in Specification 743,181. Conducting coating 40, preferably of silver paint, is provided to minimize cold emission and sparking, which would cause loss of brightness or " tearing out " of small parts of the picture. Specifications 679,348 and 715,235 also are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US265627A US2658161A (en) | 1952-01-09 | 1952-01-09 | Image-reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB743200A true GB743200A (en) | 1956-01-11 |
Family
ID=23011239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB691/53A Expired GB743200A (en) | 1952-01-09 | 1953-01-09 | Improvements in or relating to cathode ray tubes |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2658161A (en) |
| GB (1) | GB743200A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2793312A (en) * | 1952-12-24 | 1957-05-21 | Rca Corp | Electron gun structure |
| DE1073638B (en) * | 1953-02-19 | 1960-01-21 | Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen | Beam generation system for cathode ray tubes with ion trap |
| US2903612A (en) * | 1954-09-16 | 1959-09-08 | Rca Corp | Positive ion trap gun |
| US2847599A (en) * | 1956-01-09 | 1958-08-12 | Rca Corp | Bulb spacer shield |
| US2918640A (en) * | 1956-03-23 | 1959-12-22 | Gen Instrument Corp | Transformer construction |
| US3038094A (en) * | 1958-11-10 | 1962-06-05 | Gen Electric | Ruggedized electric discharge device structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE423568A (en) * | 1936-10-10 | |||
| US2323140A (en) * | 1942-04-29 | 1943-06-29 | Rca Corp | Mount support and contact for electron discharge devices |
| US2432037A (en) * | 1943-08-20 | 1947-12-02 | Kreisler Mfg Corp Jacques | Electron gun positioning means |
| NL141001B (en) * | 1948-06-15 | Superpack Vending Curacao N V | VENDING MACHINE. | |
| US2596508A (en) * | 1950-04-19 | 1952-05-13 | Rauland Corp | Electron gun for cathode-ray tubes |
-
1952
- 1952-01-09 US US265627A patent/US2658161A/en not_active Expired - Lifetime
-
1953
- 1953-01-09 GB GB691/53A patent/GB743200A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2658161A (en) | 1953-11-03 |
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