FR2224866B1 - - Google Patents

Info

Publication number
FR2224866B1
FR2224866B1 FR7412243A FR7412243A FR2224866B1 FR 2224866 B1 FR2224866 B1 FR 2224866B1 FR 7412243 A FR7412243 A FR 7412243A FR 7412243 A FR7412243 A FR 7412243A FR 2224866 B1 FR2224866 B1 FR 2224866B1
Authority
FR
France
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
FR7412243A
Other versions
FR2224866A1 (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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2224866A1 publication Critical patent/FR2224866A1/fr
Application granted granted Critical
Publication of FR2224866B1 publication Critical patent/FR2224866B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/08—Manufacture of heaters for indirectly-heated cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/04—Cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
FR7412243A 1973-04-06 1974-04-08 Expired FR2224866B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2317446A DE2317446C3 (de) 1973-04-06 1973-04-06 Verfahren zum Herstellen eines Heizelementes für eine indirekt geheizte Kathode

Publications (2)

Publication Number Publication Date
FR2224866A1 FR2224866A1 (fr) 1974-10-31
FR2224866B1 true FR2224866B1 (fr) 1978-11-03

Family

ID=5877284

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7412243A Expired FR2224866B1 (fr) 1973-04-06 1974-04-08

Country Status (10)

Country Link
US (1) US3902093A (fr)
JP (1) JPS5513102B2 (fr)
BE (1) BE813271R (fr)
CA (1) CA1032592A (fr)
DE (1) DE2317446C3 (fr)
ES (1) ES425053A1 (fr)
FR (1) FR2224866B1 (fr)
GB (1) GB1461495A (fr)
IT (1) IT1007777B (fr)
NL (1) NL7404521A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000435A (en) * 1975-06-20 1976-12-28 Westinghouse Electric Corporation Electron gun cathode with a fast warm-up characteristic
JPS5952503B2 (ja) * 1975-11-07 1984-12-20 株式会社日立製作所 直熱形酸化物陰極用基体金属板
JPS5471550A (en) * 1977-11-18 1979-06-08 Hitachi Ltd Base metal material for direct heating oxide cathode
DE2835490C2 (de) * 1978-08-12 1986-09-18 Standard Elektrik Lorenz Ag, 7000 Stuttgart Verfahren zur Herstellung einer indirekt geheizten Kathode
DE2938248A1 (de) * 1979-09-21 1981-03-26 Standard Elektrik Lorenz AG, 70435 Stuttgart Heizelement fuer eine indirekt geheizte kathode
JPS573039U (fr) * 1980-06-06 1982-01-08
DE3029853C2 (de) * 1980-08-07 1982-08-26 Standard Elektrik Lorenz Ag, 7000 Stuttgart Indirekt durch Elektronenstoß geheizte Wehneltkathode
DE19828158C1 (de) * 1998-06-24 1999-11-25 Siemens Ag Indirekt geheizte Kathode, insbesondere für Röntgenröhren

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1017292B (de) * 1956-07-18 1957-10-10 Telefunken Gmbh Aluminiumoxydueberzug fuer den Heizdraht mittelbar geheizter Kathoden elektrischer Entladungsroehren und Verfahren zur Herstellung eines Isolierueberzuges auf einem Heizdraht
US3029360A (en) * 1958-04-29 1962-04-10 Rca Corp Heater wire coating process
NL268393A (fr) * 1960-08-19
DE1146594B (de) * 1961-10-31 1963-04-04 Standard Elektrik Lorenz Ag Aus zwei Schichten bestehender Isolationsueberzug fuer das Heizelement mittelbar geheizter Kathoden elektrischer Entladungsroehren und Verfahren zu seiner Herstellung
DE1133835B (de) * 1961-12-16 1962-07-26 Telefunken Patent Verfahren zur Herstellung einer mittelbar geheizten Kathode fuer eine elektrische Entladungsroehre
BE626373A (fr) * 1961-12-22
NL281567A (fr) * 1962-07-30
DE1281038B (de) * 1962-08-01 1968-10-24 Telefunken Patent Verfahren zur Herstellung einer mittelbar geheizten Kathode fuer eine elektrische Entladungsroehre
US3246197A (en) * 1962-10-02 1966-04-12 Westinghouse Electric Corp Cathode heater having an aluminum oxide and tungesten coating
US3372297A (en) * 1964-09-28 1968-03-05 Varian Associates High frequency electron discharge devices and thermionic cathodes having improved (cvd) refractory insulation coated heater wires
US3737714A (en) * 1964-12-18 1973-06-05 Sylvania Electric Prod Dark coated heater for vacuum tube cathode
US3401297A (en) * 1965-08-23 1968-09-10 Varian Associates Thermionic cathodes for electron discharge devices with improved refractory metal heater wires
US3558966A (en) * 1967-03-01 1971-01-26 Semicon Associates Inc Directly heated dispenser cathode
US3500454A (en) * 1967-11-16 1970-03-10 Sylvania Electric Prod Insulator heater coating for heater-cathode assembly
US3531678A (en) * 1968-06-24 1970-09-29 Raytheon Co Heater with boron nitride coating
US3765939A (en) * 1972-05-10 1973-10-16 Gte Sylvania Inc Method of coating cathode heaters

Also Published As

Publication number Publication date
DE2317446C3 (de) 1983-11-10
FR2224866A1 (fr) 1974-10-31
DE2317446A1 (de) 1974-10-24
IT1007777B (it) 1976-10-30
CA1032592A (fr) 1978-06-06
GB1461495A (en) 1977-01-13
ES425053A1 (es) 1976-11-16
DE2317446B2 (de) 1977-08-18
JPS5052962A (fr) 1975-05-10
US3902093A (en) 1975-08-26
JPS5513102B2 (fr) 1980-04-07
NL7404521A (fr) 1974-10-08
BE813271R (nl) 1974-10-04

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Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property
CD Change of name or company name
ST Notification of lapse