GB407377A - Improvements in cathode ray tubes - Google Patents

Improvements in cathode ray tubes

Info

Publication number
GB407377A
GB407377A GB33089/33A GB3308933A GB407377A GB 407377 A GB407377 A GB 407377A GB 33089/33 A GB33089/33 A GB 33089/33A GB 3308933 A GB3308933 A GB 3308933A GB 407377 A GB407377 A GB 407377A
Authority
GB
United Kingdom
Prior art keywords
cathode
june
ray tubes
cathode ray
shutter
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
GB33089/33A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB407377A publication Critical patent/GB407377A/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

  • X-Ray Techniques (AREA)

Abstract

407,377. Cathode ray tubes. ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde, Berlin. June 16, 1932, No. 33089/33. Convention date, June 19, 1931. Divided on 405,977 under which a Specification was laid open to inspection under Sect. 91 of the Acts, June 20, 1932. [Class 39 (i).] Destruction of the cathode of a Braun tube due to ionic bombardment is prevented by a metallic ring- shaped screen 14 attracting the ions and provided on the outside of the Wehnelt cylinder 6 surrounding the cathode 5. A perforated shutter 11 may be arranged inside, and connected to, the cylinder 6. The cathode may be an indirectly-heated emissive cup near the shutter 11.
GB33089/33A 1931-06-19 1932-06-16 Improvements in cathode ray tubes Expired GB407377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE407377X 1931-06-19

Publications (1)

Publication Number Publication Date
GB407377A true GB407377A (en) 1934-03-16

Family

ID=6422170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33089/33A Expired GB407377A (en) 1931-06-19 1932-06-16 Improvements in cathode ray tubes

Country Status (1)

Country Link
GB (1) GB407377A (en)

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