GB479270A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB479270A
GB479270A GB19109/37A GB1910937A GB479270A GB 479270 A GB479270 A GB 479270A GB 19109/37 A GB19109/37 A GB 19109/37A GB 1910937 A GB1910937 A GB 1910937A GB 479270 A GB479270 A GB 479270A
Authority
GB
United Kingdom
Prior art keywords
cathode
disc
ray tubes
relating
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
Application number
GB19109/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of GB479270A publication Critical patent/GB479270A/en
Expired legal-status Critical Current

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
    • H01J29/48—Electron guns
    • H01J29/481—Electron guns using field-emission, photo-emission, or secondary-emission electron source

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

479,270. Cathode-ray tubes. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Nov. 12, 1936, No. 19109/37. Divided out of and addition to 479,226 under which a Specification was laid open to inspection under Sect. 91 of the Acts, May 18, 1937. [Class 39 (i)] In a cathode-ray tube having a cold. cathode, the cathode disc b and a disc c with a helical slot d form the armatures of two motors k, l and rotate independently at different speeds. A third fixed disc e has a radial slot g; the two slots co-operate so that at some time the whole surface of the cathode is rendered active.
GB19109/37A 1935-11-15 1936-11-12 Improvements in or relating to cathode ray tubes Expired GB479270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR809079T 1935-11-15

Publications (1)

Publication Number Publication Date
GB479270A true GB479270A (en) 1938-02-02

Family

ID=9253346

Family Applications (2)

Application Number Title Priority Date Filing Date
GB30959/36A Expired GB479226A (en) 1935-11-15 1936-11-12 Improvements in or relating to cathode ray tubes
GB19109/37A Expired GB479270A (en) 1935-11-15 1936-11-12 Improvements in or relating to cathode ray tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB30959/36A Expired GB479226A (en) 1935-11-15 1936-11-12 Improvements in or relating to cathode ray tubes

Country Status (4)

Country Link
US (1) US2175582A (en)
BE (1) BE417525A (en)
FR (1) FR809079A (en)
GB (2) GB479226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290540A (en) * 1964-04-16 1966-12-06 Westinghouse Electric Corp Electron discharge tube having a movable cathode tape

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644031A (en) * 1949-04-22 1953-06-30 Time Inc Scanning device
US2825838A (en) * 1953-06-04 1958-03-04 Csf Electron sources
US3364373A (en) * 1964-03-23 1968-01-16 Westinghouse Electric Corp Electron discharge device having a cathode element with a renewable electron emissive surface
US3311774A (en) * 1964-03-23 1967-03-28 Westinghouse Electric Corp Electron discharge device having a rotatable cathode therein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290540A (en) * 1964-04-16 1966-12-06 Westinghouse Electric Corp Electron discharge tube having a movable cathode tape

Also Published As

Publication number Publication date
BE417525A (en)
US2175582A (en) 1939-10-10
GB479226A (en) 1938-02-02
FR809079A (en) 1937-02-23

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