FR1113555A - Cathode body for electron tube - Google Patents

Cathode body for electron tube

Info

Publication number
FR1113555A
FR1113555A FR1113555DA FR1113555A FR 1113555 A FR1113555 A FR 1113555A FR 1113555D A FR1113555D A FR 1113555DA FR 1113555 A FR1113555 A FR 1113555A
Authority
FR
France
Prior art keywords
electron tube
cathode body
cathode
electron
tube
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 FR1113555A publication Critical patent/FR1113555A/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
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
FR1113555D 1953-11-18 1954-11-18 Cathode body for electron tube Expired FR1113555A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US345392XA 1953-11-18 1953-11-18

Publications (1)

Publication Number Publication Date
FR1113555A true FR1113555A (en) 1956-03-30

Family

ID=21877047

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1113555D Expired FR1113555A (en) 1953-11-18 1954-11-18 Cathode body for electron tube

Country Status (7)

Country Link
US (1) US2899592A (en)
BE (1) BE533455A (en)
CH (1) CH345392A (en)
DE (1) DE1043519B (en)
FR (1) FR1113555A (en)
GB (1) GB777142A (en)
NL (1) NL97571C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL261666A (en) * 1960-02-25
US3558966A (en) * 1967-03-01 1971-01-26 Semicon Associates Inc Directly heated dispenser cathode
US3693007A (en) * 1970-05-25 1972-09-19 Egyesuelt Izzolampa Oxide cathode for an electric discharge device
US4417173A (en) * 1980-12-09 1983-11-22 E M I-Varian Limited Thermionic electron emitters and methods of making them

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1954474A (en) * 1927-05-20 1934-04-10 Espe Werner Glow cathode
US2085605A (en) * 1934-05-11 1937-06-29 Gen Electric Thermionic cathode for electric discharge devices
US2121589A (en) * 1934-06-28 1938-06-21 Westinghouse Electric & Mfg Co Emissive incandescent cathode
US2147447A (en) * 1936-09-21 1939-02-14 Siemens Ag Glow cathode
DE707255C (en) * 1936-09-21 1941-06-17 Siemens Schuckertwerke Akt Ges High-performance glow cathode, especially for gas or vapor-filled discharge vessels
US2180988A (en) * 1937-06-16 1939-11-21 Gen Electric Electrode for electric discharge devices
US2389060A (en) * 1943-08-13 1945-11-13 Callite Tungsten Corp Refractory body of high electronic emission
US2473550A (en) * 1947-08-19 1949-06-21 Raytheon Mfg Co Directly heated cathode
BE486002A (en) * 1947-11-26
BE498869A (en) * 1949-10-25
US2741717A (en) * 1951-06-14 1956-04-10 Siemens Ag Dispenser type cathode having gettercoated parts
DE895479C (en) * 1951-11-20 1953-11-02 Siemens Ag Cathode for electrical discharge vessels
NL91131C (en) * 1951-11-29
BE515834A (en) * 1951-11-29
BE517981A (en) * 1952-02-27

Also Published As

Publication number Publication date
GB777142A (en) 1957-06-19
BE533455A (en)
DE1043519B (en) 1958-11-13
NL97571C (en)
CH345392A (en) 1960-03-31
US2899592A (en) 1959-08-11

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