FR1282691A - Further development of indirectly heated oxide cathodes for electron tubes - Google Patents

Further development of indirectly heated oxide cathodes for electron tubes

Info

Publication number
FR1282691A
FR1282691A FR847062A FR847062A FR1282691A FR 1282691 A FR1282691 A FR 1282691A FR 847062 A FR847062 A FR 847062A FR 847062 A FR847062 A FR 847062A FR 1282691 A FR1282691 A FR 1282691A
Authority
FR
France
Prior art keywords
further development
indirectly heated
electron tubes
heated oxide
oxide cathodes
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
FR847062A
Other languages
French (fr)
Inventor
Henri Provisor
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.)
Radiotechnique SA
Original Assignee
Radiotechnique SA
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 NL272248D priority Critical patent/NL272248A/xx
Application filed by Radiotechnique SA filed Critical Radiotechnique SA
Priority to FR847062A priority patent/FR1282691A/en
Priority to GB44443/61A priority patent/GB994471A/en
Priority to DEN20942A priority patent/DE1146207B/en
Priority to LU40949D priority patent/LU40949A1/xx
Priority to US159255A priority patent/US3262814A/en
Application granted granted Critical
Publication of FR1282691A publication Critical patent/FR1282691A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Powder Metallurgy (AREA)
FR847062A 1960-12-15 1960-12-15 Further development of indirectly heated oxide cathodes for electron tubes Expired FR1282691A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL272248D NL272248A (en) 1960-12-15
FR847062A FR1282691A (en) 1960-12-15 1960-12-15 Further development of indirectly heated oxide cathodes for electron tubes
GB44443/61A GB994471A (en) 1960-12-15 1961-12-12 Improvements relating to indirectly heated cathodes for use in electron valves
DEN20942A DE1146207B (en) 1960-12-15 1961-12-12 Process for the production of an indirectly heated cathode for electron tubes
LU40949D LU40949A1 (en) 1960-12-15 1961-12-12
US159255A US3262814A (en) 1960-12-15 1961-12-14 Method for coating an indirectly heated cathode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR847062A FR1282691A (en) 1960-12-15 1960-12-15 Further development of indirectly heated oxide cathodes for electron tubes

Publications (1)

Publication Number Publication Date
FR1282691A true FR1282691A (en) 1962-01-27

Family

ID=8744850

Family Applications (1)

Application Number Title Priority Date Filing Date
FR847062A Expired FR1282691A (en) 1960-12-15 1960-12-15 Further development of indirectly heated oxide cathodes for electron tubes

Country Status (6)

Country Link
US (1) US3262814A (en)
DE (1) DE1146207B (en)
FR (1) FR1282691A (en)
GB (1) GB994471A (en)
LU (1) LU40949A1 (en)
NL (1) NL272248A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500454A (en) * 1967-11-16 1970-03-10 Sylvania Electric Prod Insulator heater coating for heater-cathode assembly
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
NL8002665A (en) * 1980-05-09 1981-12-01 Philips Nv METHOD FOR PROVIDING A METAL PART ON A THERMAL BLACK SURFACE
JPH0677435B2 (en) * 1985-03-18 1994-09-28 株式会社日立製作所 Method for manufacturing indirectly heated cathode

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL81097C (en) * 1947-02-15 Gen Electric
BE518861A (en) * 1952-04-01
US2817572A (en) * 1954-04-06 1957-12-24 Telefunken Ges Fur Drahtlase T Electrodes for electron discharge tubes
US2891879A (en) * 1957-07-26 1959-06-23 Westinghouse Electric Corp Black coating of high thermal emissivity and process for applying the same
BE571711A (en) * 1957-10-04
US2987423A (en) * 1958-09-26 1961-06-06 Rca Corp Heat radiating coatings
US3068337A (en) * 1958-12-05 1962-12-11 Gen Electric Vaporizer and method for making the same
NL101694C (en) * 1959-03-06

Also Published As

Publication number Publication date
NL272248A (en)
DE1146207B (en) 1963-03-28
LU40949A1 (en) 1962-02-12
GB994471A (en) 1965-06-10
US3262814A (en) 1966-07-26

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