GB1461495A - Heater element suitable for use with indirectly heated cathodes and a method of producing such a heater element - Google Patents

Heater element suitable for use with indirectly heated cathodes and a method of producing such a heater element

Info

Publication number
GB1461495A
GB1461495A GB1525974A GB1525974A GB1461495A GB 1461495 A GB1461495 A GB 1461495A GB 1525974 A GB1525974 A GB 1525974A GB 1525974 A GB1525974 A GB 1525974A GB 1461495 A GB1461495 A GB 1461495A
Authority
GB
United Kingdom
Prior art keywords
heater element
indirectly heated
producing
cathode
heated 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
GB1525974A
Other languages
English (en)
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 GB1461495A publication Critical patent/GB1461495A/en
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)
GB1525974A 1973-04-06 1974-04-05 Heater element suitable for use with indirectly heated cathodes and a method of producing such a heater element Expired GB1461495A (en)

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 (1)

Publication Number Publication Date
GB1461495A true GB1461495A (en) 1977-01-13

Family

ID=5877284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1525974A Expired GB1461495A (en) 1973-04-06 1974-04-05 Heater element suitable for use with indirectly heated cathodes and a method of producing such a heater element

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025946A1 (fr) * 1979-09-21 1981-04-01 International Standard Electric Corporation Elément chauffant pour cathode à chauffage indirect

Families Citing this family (7)

* 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
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025946A1 (fr) * 1979-09-21 1981-04-01 International Standard Electric Corporation Elément chauffant pour cathode à chauffage indirect

Also Published As

Publication number Publication date
DE2317446A1 (de) 1974-10-24
IT1007777B (it) 1976-10-30
FR2224866B1 (fr) 1978-11-03
CA1032592A (fr) 1978-06-06
DE2317446B2 (de) 1977-08-18
DE2317446C3 (de) 1983-11-10
BE813271R (nl) 1974-10-04
ES425053A1 (es) 1976-11-16
US3902093A (en) 1975-08-26
JPS5513102B2 (fr) 1980-04-07
NL7404521A (fr) 1974-10-08
FR2224866A1 (fr) 1974-10-31
JPS5052962A (fr) 1975-05-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee