GB452054A - Improvements in and relating to heater elements for indirectly heated thermionic cathodes - Google Patents

Improvements in and relating to heater elements for indirectly heated thermionic cathodes

Info

Publication number
GB452054A
GB452054A GB613935A GB613935A GB452054A GB 452054 A GB452054 A GB 452054A GB 613935 A GB613935 A GB 613935A GB 613935 A GB613935 A GB 613935A GB 452054 A GB452054 A GB 452054A
Authority
GB
United Kingdom
Prior art keywords
helix
relating
thermionic cathodes
heater elements
indirectly heated
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
GB613935A
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.)
MO Valve Co Ltd
Original Assignee
MO Valve 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
Priority to BE413564D priority Critical patent/BE413564A/xx
Application filed by MO Valve Co Ltd filed Critical MO Valve Co Ltd
Priority to GB613935A priority patent/GB452054A/en
Priority to FR801403D priority patent/FR801403A/en
Publication of GB452054A publication Critical patent/GB452054A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/22—Heaters

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

452,054. Thermionic cathodes. M-O VALVE CO., Ltd., Electra House, Victoria Embankment, London, and WARREN, G. W., c/o General Electric Co., Ltd., Wembley, Middlesex. Feb. 26, 1935, No. 6139. [Class 39 (i)] The helix 4 of a cathode heater is wound on a mandrel which is withdrawn from the helix and may be replaced by an insulating tube 2 surrounding the central lead wire 3; or if the central wire is stout enough it is sprayed with insulating material and placed inside the helix without a surrounding insulating tube. The end of the helix may be wound for a few turns on the central wire before it is welded thereto. Reference has been directed by the Comptroller to Specification 313,691, [Class 37].
GB613935A 1935-02-26 1935-02-26 Improvements in and relating to heater elements for indirectly heated thermionic cathodes Expired GB452054A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE413564D BE413564A (en) 1935-02-26
GB613935A GB452054A (en) 1935-02-26 1935-02-26 Improvements in and relating to heater elements for indirectly heated thermionic cathodes
FR801403D FR801403A (en) 1935-02-26 1936-01-29 heating elements for indirectly heated tubular cathodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB613935A GB452054A (en) 1935-02-26 1935-02-26 Improvements in and relating to heater elements for indirectly heated thermionic cathodes

Publications (1)

Publication Number Publication Date
GB452054A true GB452054A (en) 1936-08-17

Family

ID=9809130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB613935A Expired GB452054A (en) 1935-02-26 1935-02-26 Improvements in and relating to heater elements for indirectly heated thermionic cathodes

Country Status (3)

Country Link
BE (1) BE413564A (en)
FR (1) FR801403A (en)
GB (1) GB452054A (en)

Also Published As

Publication number Publication date
FR801403A (en) 1936-08-04
BE413564A (en)

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