GB316678A - Improvements relating to electron discharge devices - Google Patents

Improvements relating to electron discharge devices

Info

Publication number
GB316678A
GB316678A GB23770/29A GB2377029A GB316678A GB 316678 A GB316678 A GB 316678A GB 23770/29 A GB23770/29 A GB 23770/29A GB 2377029 A GB2377029 A GB 2377029A GB 316678 A GB316678 A GB 316678A
Authority
GB
United Kingdom
Prior art keywords
electrodes
filament
slots
grid
disc
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
GB23770/29A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB316678A publication Critical patent/GB316678A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

316,678. British Thomson-Houston Co., Ltd., (Assignees of Thompson, B. J.). Aug. 2, 1928, [Convention date]. Vacuum. tubes.- Microphonic and other noises in valves &c. due to relative motion of the electrodes, particulaily of a filamentary cathode, are reduced by the provision at that end of the electrode structure remote from the stem of an insulating member having openended slots which frictionally engage the electrodes or their wire supports at opposite sides thereof. A screened grid valve, Fig. 1, described in Specification 292,563, is provided with a slotted semi-circular thin mica disc 12, Fig. 2, having slots for a control grid leak 6 and two wires which support an inner screen grid 8. A flexibly supported filament 2 contacts lightly with the sides of a slot 12a which is extended as shown beyond the filament to prevent lateral strain thereon. The Specification as open to inspection under Sect. 91 (3) (a) states also that the registering member may be placed at the lower end or at other portions of the structure and that when there are no horizontal supports it. may consist of a drilled circular disc. This subject-matter does not appear in the Specification as accepted.
GB23770/29A 1928-08-02 1929-08-02 Improvements relating to electron discharge devices Expired GB316678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US316678XA 1928-08-02 1928-08-02

Publications (1)

Publication Number Publication Date
GB316678A true GB316678A (en) 1930-11-03

Family

ID=21860771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23770/29A Expired GB316678A (en) 1928-08-02 1929-08-02 Improvements relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB316678A (en)

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