GB1129615A - Improvements in or relating to electron discharge device cathodes - Google Patents

Improvements in or relating to electron discharge device cathodes

Info

Publication number
GB1129615A
GB1129615A GB10403/65A GB1040365A GB1129615A GB 1129615 A GB1129615 A GB 1129615A GB 10403/65 A GB10403/65 A GB 10403/65A GB 1040365 A GB1040365 A GB 1040365A GB 1129615 A GB1129615 A GB 1129615A
Authority
GB
United Kingdom
Prior art keywords
wire
former
alumina
aluminate
molybdenum
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
GB10403/65A
Other languages
English (en)
Inventor
Walter John Honeyball
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve Co Ltd
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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Priority to GB10403/65A priority Critical patent/GB1129615A/en
Priority to US531621A priority patent/US3477110A/en
Priority to NL6603090A priority patent/NL6603090A/xx
Priority to DE19661539896 priority patent/DE1539896B1/de
Priority to CH341966A priority patent/CH443494A/fr
Publication of GB1129615A publication Critical patent/GB1129615A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/04—Cathodes
    • H01J23/05—Cathodes having a cylindrical emissive surface, e.g. cathodes for magnetrons
    • 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)
  • Microwave Tubes (AREA)
GB10403/65A 1965-03-11 1965-03-11 Improvements in or relating to electron discharge device cathodes Expired GB1129615A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB10403/65A GB1129615A (en) 1965-03-11 1965-03-11 Improvements in or relating to electron discharge device cathodes
US531621A US3477110A (en) 1965-03-11 1966-03-03 Method of making electron discharge device cathodes
NL6603090A NL6603090A (enrdf_load_stackoverflow) 1965-03-11 1966-03-09
DE19661539896 DE1539896B1 (de) 1965-03-11 1966-03-09 Verfahren zur Herstellung von Gluehkathoden mit Alunat-Material fuer Elektronenroehren
CH341966A CH443494A (fr) 1965-03-11 1966-03-10 Tube à décharge électronique et procédé pour sa fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10403/65A GB1129615A (en) 1965-03-11 1965-03-11 Improvements in or relating to electron discharge device cathodes

Publications (1)

Publication Number Publication Date
GB1129615A true GB1129615A (en) 1968-10-09

Family

ID=9967193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10403/65A Expired GB1129615A (en) 1965-03-11 1965-03-11 Improvements in or relating to electron discharge device cathodes

Country Status (5)

Country Link
US (1) US3477110A (enrdf_load_stackoverflow)
CH (1) CH443494A (enrdf_load_stackoverflow)
DE (1) DE1539896B1 (enrdf_load_stackoverflow)
GB (1) GB1129615A (enrdf_load_stackoverflow)
NL (1) NL6603090A (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3558966A (en) * 1967-03-01 1971-01-26 Semicon Associates Inc Directly heated dispenser cathode
GB8611967D0 (en) * 1986-05-16 1986-10-29 English Electric Valve Co Ltd Directly heated cathodes
GB2214704B (en) * 1988-01-20 1992-05-06 English Electric Valve Co Ltd Magnetrons
US7545089B1 (en) * 2005-03-21 2009-06-09 Calabazas Creek Research, Inc. Sintered wire cathode

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589521A (en) * 1952-03-18 Heater
US1946603A (en) * 1929-05-09 1934-02-13 Electrons Inc Cathode for electrical discharge devices
US2175345A (en) * 1935-07-12 1939-10-10 Gen Electric Electric gaseous discharge device
US2287460A (en) * 1940-11-29 1942-06-23 Rca Corp Insulated heater and method of manufacture
US2867032A (en) * 1950-10-27 1959-01-06 Sylvania Electric Prod Method for producing vacuum tube heater elements
US3201639A (en) * 1955-02-09 1965-08-17 Philips Corp Thermionic dispenser cathode
US2878409A (en) * 1957-04-29 1959-03-17 Philips Corp Dispenser-type cathode and method of making
US3117249A (en) * 1960-02-16 1964-01-07 Sperry Rand Corp Embedded heater cathode
NL268393A (enrdf_load_stackoverflow) * 1960-08-19
US3307241A (en) * 1963-10-14 1967-03-07 Litton Prec Products Inc Process for making cathodes

Also Published As

Publication number Publication date
DE1539896B1 (de) 1970-08-20
US3477110A (en) 1969-11-11
NL6603090A (enrdf_load_stackoverflow) 1966-09-12
CH443494A (fr) 1967-09-15

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