FR1370363A - Hot cathode for electron tubes and process for their manufacture - Google Patents

Hot cathode for electron tubes and process for their manufacture

Info

Publication number
FR1370363A
FR1370363A FR44028A FR69044028A FR1370363A FR 1370363 A FR1370363 A FR 1370363A FR 44028 A FR44028 A FR 44028A FR 69044028 A FR69044028 A FR 69044028A FR 1370363 A FR1370363 A FR 1370363A
Authority
FR
France
Prior art keywords
manufacture
hot cathode
electron tubes
tubes
electron
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
FR44028A
Other languages
French (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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Application granted granted Critical
Publication of FR1370363A publication Critical patent/FR1370363A/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
    • 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)
FR44028A 1962-09-27 1963-09-25 Hot cathode for electron tubes and process for their manufacture Expired FR1370363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1142262A CH403090A (en) 1962-09-27 1962-09-27 Hot cathode for electron tubes and process for their manufacture

Publications (1)

Publication Number Publication Date
FR1370363A true FR1370363A (en) 1964-08-21

Family

ID=4373329

Family Applications (1)

Application Number Title Priority Date Filing Date
FR44028A Expired FR1370363A (en) 1962-09-27 1963-09-25 Hot cathode for electron tubes and process for their manufacture

Country Status (4)

Country Link
CH (1) CH403090A (en)
FR (1) FR1370363A (en)
GB (1) GB1015272A (en)
NL (1) NL298401A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1987529A2 (en) * 2006-02-08 2008-11-05 Varian Medical Systems Technologies, Inc. Improved cathode structures for x-ray tubes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814016B2 (en) * 1978-03-31 1983-03-17 株式会社日立製作所 Substrate metal plate material for directly heated oxide cathode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1987529A2 (en) * 2006-02-08 2008-11-05 Varian Medical Systems Technologies, Inc. Improved cathode structures for x-ray tubes
EP1987529B1 (en) * 2006-02-08 2017-07-19 Varex Imaging Corporation Improved cathode structure for x-ray tubes

Also Published As

Publication number Publication date
GB1015272A (en) 1965-12-31
CH403090A (en) 1965-11-30
NL298401A (en) 1965-11-25

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