FR775737A - Indirectly heated cathode for electric discharge tubes - Google Patents

Indirectly heated cathode for electric discharge tubes

Info

Publication number
FR775737A
FR775737A FR775737DA FR775737A FR 775737 A FR775737 A FR 775737A FR 775737D A FR775737D A FR 775737DA FR 775737 A FR775737 A FR 775737A
Authority
FR
France
Prior art keywords
electric discharge
discharge tubes
indirectly heated
heated cathode
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
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR775737A publication Critical patent/FR775737A/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
    • H01J1/26—Supports for the emissive material
FR775737D 1933-07-13 1934-07-11 Indirectly heated cathode for electric discharge tubes Expired FR775737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL430853X 1933-07-13

Publications (1)

Publication Number Publication Date
FR775737A true FR775737A (en) 1935-01-08

Family

ID=19786148

Family Applications (1)

Application Number Title Priority Date Filing Date
FR775737D Expired FR775737A (en) 1933-07-13 1934-07-11 Indirectly heated cathode for electric discharge tubes

Country Status (5)

Country Link
US (1) US2057124A (en)
BE (1) BE404192A (en)
FR (1) FR775737A (en)
GB (1) GB430853A (en)
NL (1) NL40799C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855606C (en) * 1943-01-15 1952-11-13 Philips Nv Electric discharge tubes and processes for their manufacture
US2889445A (en) * 1955-03-28 1959-06-02 Herman B Wolf Electrically heated mat
US3062507A (en) * 1957-11-18 1962-11-06 Smith Corp A O Multi-layer vessel having a heat transfer material disposed between layers
US3009044A (en) * 1960-07-11 1961-11-14 Doehler Hans Electric resistance element for space heaters
GB970426A (en) * 1961-02-09 1964-09-23 Scholemann Ag Improvements in electrically heated billet-containers for metal-extrusion or tube presses
US3662211A (en) * 1961-03-15 1972-05-09 Gen Electric Cathode construction
US3958146A (en) * 1974-02-08 1976-05-18 Gte Sylvania Incorporated Fast warm up picture tube cathode cap having high heat emissivity surface on the interior thereof
US4009409A (en) * 1975-09-02 1977-02-22 Gte Sylvania Incorporated Fast warmup cathode and method of making same
US5156728A (en) * 1987-02-12 1992-10-20 Terumo Kabushiki Kaisha Ion sensor

Also Published As

Publication number Publication date
GB430853A (en) 1935-06-26
US2057124A (en) 1936-10-13
BE404192A (en)
NL40799C (en)

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