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GB656459A - Improvements in or relating to electrode assemblies for electron discharge devices - Google Patents

Improvements in or relating to electrode assemblies for electron discharge devices

Info

Publication number
GB656459A
GB656459A GB2881047A GB2881047A GB656459A GB 656459 A GB656459 A GB 656459A GB 2881047 A GB2881047 A GB 2881047A GB 2881047 A GB2881047 A GB 2881047A GB 656459 A GB656459 A GB 656459A
Authority
GB
United Kingdom
Prior art keywords
cathode
disc
relating
electrode assemblies
discharge devices
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
GB2881047A
Inventor
James Barr Stevenson
Thomas Henry Fulcher
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB2881047A priority Critical patent/GB656459A/en
Publication of GB656459A publication Critical patent/GB656459A/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
    • H01J29/485—Construction of the gun or of parts thereof

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Solid Thermionic Cathode (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

656,459. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 29,1947, No. 28810. [Class 39 (i)] An electrode assembly especially for a cathode-ray tube comprises a sleeve 1 with an end wall 2 in which there is an opening accommodating the recessed and apertured portion 4 of a thinner element 3, the emissive surface 15 of the cathode lying within the recessed portion and closely adjacent the aperture 6. The cathode tube 7 with its heater 8 is held in a ceramic disc 10 which is spaced from the end wall 3 by a ring 12. A metal disc 14 shields the ceramic disc from deposition of material emitted from tube 7. The distance between the emissive surface 15 and the outer surface of disc 3 is given as 0.013-0.014 inches.
GB2881047A 1947-10-29 1947-10-29 Improvements in or relating to electrode assemblies for electron discharge devices Expired GB656459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2881047A GB656459A (en) 1947-10-29 1947-10-29 Improvements in or relating to electrode assemblies for electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2881047A GB656459A (en) 1947-10-29 1947-10-29 Improvements in or relating to electrode assemblies for electron discharge devices

Publications (1)

Publication Number Publication Date
GB656459A true GB656459A (en) 1951-08-22

Family

ID=10281542

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2881047A Expired GB656459A (en) 1947-10-29 1947-10-29 Improvements in or relating to electrode assemblies for electron discharge devices

Country Status (1)

Country Link
GB (1) GB656459A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606897A1 (en) * 1976-02-20 1977-12-22 Licentia Gmbh ELECTRON BEAM GENERATING SYSTEM FOR A CATHODE BEAM TUBE
US4104554A (en) * 1976-02-20 1978-08-01 Licentia Patent-Verwaltungs-G.M.B.H. Electron beam producing arrangement for a cathode ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606897A1 (en) * 1976-02-20 1977-12-22 Licentia Gmbh ELECTRON BEAM GENERATING SYSTEM FOR A CATHODE BEAM TUBE
US4104554A (en) * 1976-02-20 1978-08-01 Licentia Patent-Verwaltungs-G.M.B.H. Electron beam producing arrangement for a cathode ray tube

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