ES218620A1 - Cathode ray tubes for television and like purposes - Google Patents
Cathode ray tubes for television and like purposesInfo
- Publication number
- ES218620A1 ES218620A1 ES0218620A ES218620A ES218620A1 ES 218620 A1 ES218620 A1 ES 218620A1 ES 0218620 A ES0218620 A ES 0218620A ES 218620 A ES218620 A ES 218620A ES 218620 A1 ES218620 A1 ES 218620A1
- Authority
- ES
- Spain
- Prior art keywords
- neck
- television
- cathode ray
- ray tubes
- magnetic
- 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
- H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields
-
- 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
-
- 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
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Improvements, in cathode ray tubes for television and similar purposes, characterized by having focus and deflection coils around their neck close to each other and by mounting between the coils and the neck at least one magnetic screen subdivided and built to provide a large number of magnetic steps that together offer a relatively low reductance to the lines of magnetic force of practically radial direction with respect to the neck of the tube, and a relatively high reductance to the lines of force directed practically parallel to the axis of the tube. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1329/54A GB769401A (en) | 1954-01-15 | 1954-01-15 | Improvements in or relating to television and like cathode ray tube apparatus having magnetic screens |
Publications (1)
Publication Number | Publication Date |
---|---|
ES218620A1 true ES218620A1 (en) | 1955-04-16 |
Family
ID=9720104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0218620A Expired ES218620A1 (en) | 1954-01-15 | 1954-11-24 | Cathode ray tubes for television and like purposes |
Country Status (5)
Country | Link |
---|---|
US (1) | US2748305A (en) |
ES (1) | ES218620A1 (en) |
FR (1) | FR1115306A (en) |
GB (1) | GB769401A (en) |
NL (2) | NL193774A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2834901A (en) * | 1954-05-06 | 1958-05-13 | Rca Corp | Cathode ray tube adjunct |
BE585351A (en) * | 1958-12-06 | |||
JPS63144505A (en) * | 1986-12-09 | 1988-06-16 | Mitsubishi Electric Corp | Magnetic field leakage canceling device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2414925A (en) * | 1944-01-26 | 1947-01-28 | Farnsworth Television & Radio | Scanning and focusing yoke |
FR960167A (en) * | 1947-02-19 | 1950-04-14 |
-
0
- NL NL99008D patent/NL99008C/xx active
- NL NL193774D patent/NL193774A/xx unknown
-
1954
- 1954-01-15 GB GB1329/54A patent/GB769401A/en not_active Expired
- 1954-11-24 ES ES0218620A patent/ES218620A1/en not_active Expired
- 1954-12-09 FR FR1115306D patent/FR1115306A/en not_active Expired
- 1954-12-21 US US476667A patent/US2748305A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL99008C (en) | |
NL193774A (en) | |
GB769401A (en) | 1957-03-06 |
US2748305A (en) | 1956-05-29 |
FR1115306A (en) | 1956-04-23 |
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