GB1264087A - - Google Patents

Info

Publication number
GB1264087A
GB1264087A GB1264087DA GB1264087A GB 1264087 A GB1264087 A GB 1264087A GB 1264087D A GB1264087D A GB 1264087DA GB 1264087 A GB1264087 A GB 1264087A
Authority
GB
United Kingdom
Prior art keywords
layer
grains
sintered
compressed
pouring
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
English (en)
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 filed Critical
Publication of GB1264087A publication Critical patent/GB1264087A/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
    • 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
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
GB1264087D 1969-11-21 1970-11-18 Expired GB1264087A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6917538A NL6917538A (xx) 1969-11-21 1969-11-21

Publications (1)

Publication Number Publication Date
GB1264087A true GB1264087A (xx) 1972-02-16

Family

ID=19808445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1264087D Expired GB1264087A (xx) 1969-11-21 1970-11-18

Country Status (6)

Country Link
BE (1) BE759174A (xx)
CA (1) CA960007A (xx)
DE (1) DE2054698A1 (xx)
FR (1) FR2069601A5 (xx)
GB (1) GB1264087A (xx)
NL (1) NL6917538A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028954A1 (fr) * 1979-11-09 1981-05-20 Thomson-Csf Cathode thermo-ionique, son procédé de fabrication et tube électronique incorporant une telle cathode
GB2127617A (en) * 1981-12-11 1984-04-11 Tokyo Shibaura Electric Co Cathode structure for electron tube
GB2188771A (en) * 1986-04-01 1987-10-07 Ceradyne Inc Dispenser cathode
GB2196786A (en) * 1986-10-27 1988-05-05 Ceradyne Inc Cathode assembly
EP0510941A1 (en) * 1991-04-23 1992-10-28 Goldstar Co. Ltd. Method for manufacturing impregnated cathodes
EP0512280A1 (de) * 1991-05-07 1992-11-11 Licentia Patent-Verwaltungs-GmbH Vorratskathode und Verfahren zu deren Herstellung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808134A1 (de) * 1978-02-25 1979-08-30 Licentia Gmbh Vorratskathode
DE2822665A1 (de) * 1978-05-05 1979-11-08 Bbc Brown Boveri & Cie Gluehkathodenmaterial
DE2842079A1 (de) * 1978-09-27 1980-04-03 Siemens Ag Vorratskathode, insbesondere metall- kapillar-kathode
FR2494035A1 (fr) * 1980-11-07 1982-05-14 Thomson Csf Cathode thermo-electronique pour tube hyperfrequences et tube incorporant une telle cathode
DE3336489A1 (de) * 1983-10-07 1985-04-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Indirekt geheizte vorratskathode
FR2683090A1 (fr) * 1991-10-25 1993-04-30 Europ Composants Electron Cathode a reserve et procede de fabrication d'une telle cathode.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028954A1 (fr) * 1979-11-09 1981-05-20 Thomson-Csf Cathode thermo-ionique, son procédé de fabrication et tube électronique incorporant une telle cathode
GB2127617A (en) * 1981-12-11 1984-04-11 Tokyo Shibaura Electric Co Cathode structure for electron tube
US4524296A (en) * 1981-12-11 1985-06-18 Tokyo Shibaura Denki Kabushiki Kaisha Cathode structure for electron tube
GB2188771A (en) * 1986-04-01 1987-10-07 Ceradyne Inc Dispenser cathode
GB2188771B (en) * 1986-04-01 1990-12-19 Ceradyne Inc Dispenser cathode and method of manufacture therefor
GB2196786A (en) * 1986-10-27 1988-05-05 Ceradyne Inc Cathode assembly
EP0510941A1 (en) * 1991-04-23 1992-10-28 Goldstar Co. Ltd. Method for manufacturing impregnated cathodes
EP0512280A1 (de) * 1991-05-07 1992-11-11 Licentia Patent-Verwaltungs-GmbH Vorratskathode und Verfahren zu deren Herstellung

Also Published As

Publication number Publication date
NL6917538A (xx) 1971-05-25
BE759174A (fr) 1971-05-19
DE2054698A1 (de) 1971-11-18
FR2069601A5 (xx) 1971-09-03
CA960007A (en) 1974-12-31

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees