FR58542E - heating element intended in particular for the indirect heating of cathodes of discharge tubes - Google Patents

heating element intended in particular for the indirect heating of cathodes of discharge tubes

Info

Publication number
FR58542E
FR58542E FR58542DA FR58542E FR 58542 E FR58542 E FR 58542E FR 58542D A FR58542D A FR 58542DA FR 58542 E FR58542 E FR 58542E
Authority
FR
France
Prior art keywords
cathodes
discharge tubes
heating
element intended
heating element
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
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR58542E publication Critical patent/FR58542E/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
    • H01J1/22—Heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H05B3/30—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material on or between metallic plates
FR58542D 1948-06-14 1948-06-14 heating element intended in particular for the indirect heating of cathodes of discharge tubes Expired FR58542E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR58542T 1948-06-14

Publications (1)

Publication Number Publication Date
FR58542E true FR58542E (en) 1954-01-27

Family

ID=8692438

Family Applications (1)

Application Number Title Priority Date Filing Date
FR58542D Expired FR58542E (en) 1948-06-14 1948-06-14 heating element intended in particular for the indirect heating of cathodes of discharge tubes

Country Status (2)

Country Link
BE (1) BE483164A (en)
FR (1) FR58542E (en)

Also Published As

Publication number Publication date
BE483164A (en)

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