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CH423001A - Process for covering a filament for an indirectly heated cathode with a dark-colored insulating layer, filament produced according to this process and use of such filament for the cathode of an electrical discharge tube - Google Patents

Process for covering a filament for an indirectly heated cathode with a dark-colored insulating layer, filament produced according to this process and use of such filament for the cathode of an electrical discharge tube

Info

Publication number
CH423001A
CH423001A CH1493362A CH1493362A CH423001A CH 423001 A CH423001 A CH 423001A CH 1493362 A CH1493362 A CH 1493362A CH 1493362 A CH1493362 A CH 1493362A CH 423001 A CH423001 A CH 423001A
Authority
CH
Switzerland
Prior art keywords
filament
cathode
dark
covering
insulating layer
Prior art date
Application number
CH1493362A
Other languages
German (de)
Inventor
Raymund Almer Friedric Hermann
Kuiper Adrianus
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH423001A publication Critical patent/CH423001A/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
CH1493362A 1961-12-22 1962-12-19 Process for covering a filament for an indirectly heated cathode with a dark-colored insulating layer, filament produced according to this process and use of such filament for the cathode of an electrical discharge tube CH423001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL272882 1961-12-22

Publications (1)

Publication Number Publication Date
CH423001A true CH423001A (en) 1966-10-31

Family

ID=19753496

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1493362A CH423001A (en) 1961-12-22 1962-12-19 Process for covering a filament for an indirectly heated cathode with a dark-colored insulating layer, filament produced according to this process and use of such filament for the cathode of an electrical discharge tube

Country Status (5)

Country Link
BE (1) BE626373A (en)
CH (1) CH423001A (en)
DE (1) DE1234859B (en)
GB (1) GB976012A (en)
NL (1) NL113095C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317446C3 (en) * 1973-04-06 1983-11-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Method of manufacturing a heating element for an indirectly heated cathode

Also Published As

Publication number Publication date
NL113095C (en)
GB976012A (en) 1964-11-25
BE626373A (en)
DE1234859B (en) 1967-02-23

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