GB618180A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB618180A
GB618180A GB32271/46A GB3227146A GB618180A GB 618180 A GB618180 A GB 618180A GB 32271/46 A GB32271/46 A GB 32271/46A GB 3227146 A GB3227146 A GB 3227146A GB 618180 A GB618180 A GB 618180A
Authority
GB
United Kingdom
Prior art keywords
grid
disc
cylinder
electric discharge
cathode
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
GB32271/46A
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 GB618180A publication Critical patent/GB618180A/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
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/38—Control electrodes, e.g. grid
    • 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
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0015—Non-sealed electrodes
    • H01J2893/0016—Planar grids

Landscapes

  • Electron Sources, Ion Sources (AREA)

Abstract

618,180. Making thermionic valve grids. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 30, 1946, No. 32271. Convention date, April 21, 1945. [Class 83 (ii)] [Also in Group XL (a)] A high-frequency electric discharge device of the type disclosed in Specification 584,787, [Croup XL], has a disc 1 carrying an anode 12, a disc 2 carrying a cylindrical mounting 30 within which grid member 27 is welded after being correctly spaced, and a disc 3 against which bears flanged member 15 supporting via cylindrical member 22 the cathode disc 21. The grid consists of a cylinder 27 with an inward flange 28<SP>1</SP> at one end, across which the grid wires extend. The flange is subsequently depressed or dished to tighten the grid wires. The grid-supporting cylinder 27 or its cylindrical mounting 30 or both extend downwards sufficiently to shield insulating cylinder 5 from deposition of material vaporized from the cathode. Specification 596,764, [Group XL], also is referred to.
GB32271/46A 1945-04-21 1946-10-30 Improvements in and relating to electric discharge devices Expired GB618180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US618180XA 1945-04-21 1945-04-21

Publications (1)

Publication Number Publication Date
GB618180A true GB618180A (en) 1949-02-17

Family

ID=22038322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32271/46A Expired GB618180A (en) 1945-04-21 1946-10-30 Improvements in and relating to electric discharge devices

Country Status (1)

Country Link
GB (1) GB618180A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116831B (en) * 1958-03-26 1961-11-09 Sylvania Electric Prod Tension grids for electron discharge devices and methods for their manufacture
DE1119419B (en) * 1958-01-29 1961-12-14 Gen Electric Process for the production of an electrical discharge tube composed of a plurality of ring-shaped sections of insulating material and for discharge tubes produced therefrom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119419B (en) * 1958-01-29 1961-12-14 Gen Electric Process for the production of an electrical discharge tube composed of a plurality of ring-shaped sections of insulating material and for discharge tubes produced therefrom
DE1116831B (en) * 1958-03-26 1961-11-09 Sylvania Electric Prod Tension grids for electron discharge devices and methods for their manufacture

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