GB400058A - Improvements relating to indirectly heated cathodes for electron discharge devices - Google Patents

Improvements relating to indirectly heated cathodes for electron discharge devices

Info

Publication number
GB400058A
GB400058A GB4801/33A GB480133A GB400058A GB 400058 A GB400058 A GB 400058A GB 4801/33 A GB4801/33 A GB 4801/33A GB 480133 A GB480133 A GB 480133A GB 400058 A GB400058 A GB 400058A
Authority
GB
United Kingdom
Prior art keywords
indirectly heated
improvements relating
discharge devices
electron discharge
apertures
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
GB4801/33A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB400058A publication Critical patent/GB400058A/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

Landscapes

  • Electron Beam Exposure (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

400,058. Thermionic cathodes. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine, Elektricitõts.Ges.; 2, Friedrich Karl-Ufer, Berlin.) Feb. 16, 1933, No. 4801. Convention date, Feb. 16, 1932. [Class 39 (i).] A refractory insulating body for an indirectly heated cathode has apertures, in addition to those which may be provided for the reception of the heating element, for the purpose of reducing the volume and heat capacity of the body. As shown, the heating wire 4 is threaded through some only of a number of longitudinal apertures 6 in a refractory core 3 ; or the heater may be wound on a core provided with longitudinal apertures. Reference has been directed by the Comptroller o Specification 362,627.
GB4801/33A 1932-02-16 1933-02-16 Improvements relating to indirectly heated cathodes for electron discharge devices Expired GB400058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE415398X 1932-02-16

Publications (1)

Publication Number Publication Date
GB400058A true GB400058A (en) 1933-10-19

Family

ID=6448466

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4800/33A Expired GB415398A (en) 1932-02-16 1933-02-16 Improvements relating to indirectly heated cathodes for electron discharge devices
GB4801/33A Expired GB400058A (en) 1932-02-16 1933-02-16 Improvements relating to indirectly heated cathodes for electron discharge devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB4800/33A Expired GB415398A (en) 1932-02-16 1933-02-16 Improvements relating to indirectly heated cathodes for electron discharge devices

Country Status (3)

Country Link
FR (1) FR750565A (en)
GB (2) GB415398A (en)
NL (1) NL36127C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE411406A (en) * 1935-03-06
NL48805C (en) * 1936-09-01

Also Published As

Publication number Publication date
GB415398A (en) 1934-08-16
NL36127C (en)
FR750565A (en) 1933-08-12

Similar Documents

Publication Publication Date Title
GB400058A (en) Improvements relating to indirectly heated cathodes for electron discharge devices
GB478024A (en) Improvements in or relating to thermionic cathodes for high pressure metal vapour discharge devices
GB346957A (en) Improvements in and relating to electron discharge devices
GB430853A (en) Improvements in or relating to indirectly heated cathodes for electron discharge tubes
US2231610A (en) Discharge device
GB456402A (en) Improvements in or relating to gaseous discharge lamps
GB453154A (en) Improvements in or relating to indirectly heated cathodes for thermionic valves
GB447536A (en) Improvements in and relating to electric discharge devices
GB395529A (en) Improvements in and relating to electric discharge tubes
GB451353A (en) Improvements in and relating to electric discharge devices
GB377584A (en) Improvements in luminous electric discharge tubes
GB433437A (en) Improvements in electric discharge tubes
US2648024A (en) Heat retaining means for hydrogen thyratron
GB375481A (en) An indirectly heated cathode for thermionic valves
GB300614A (en) Improvements relating to electric discharge devices
GB387123A (en) Improvements in electronic discharge tubes
GB432950A (en) Improvements in electric discharge devices
GB515525A (en) Improvements in or relating to electron multipliers
GB207800A (en) Improvements in and relating to electron discharge devices
GB401638A (en) Cathode attachment
GB387275A (en) Improvements in and relating to cathode ray tubes
GB335573A (en) Improvements in thermionic cathodes of vacuum electric tube devices
GB413076A (en) Improvements in and relating to electric discharge devices
GB346193A (en) Improvements in and relating to electron discharge devices
GB486068A (en) Improvements in and relating to the gettering of metallic bulb electric discharge tubes