CH402197A - Process for the production of an impregnated cathode for electric discharge tubes and a cathode produced by this process - Google Patents

Process for the production of an impregnated cathode for electric discharge tubes and a cathode produced by this process

Info

Publication number
CH402197A
CH402197A CH60660A CH60660A CH402197A CH 402197 A CH402197 A CH 402197A CH 60660 A CH60660 A CH 60660A CH 60660 A CH60660 A CH 60660A CH 402197 A CH402197 A CH 402197A
Authority
CH
Switzerland
Prior art keywords
cathode
production
electric discharge
discharge tubes
produced
Prior art date
Application number
CH60660A
Other languages
German (de)
Inventor
Levi Roberto
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 CH402197A publication Critical patent/CH402197A/en

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
    • H01J9/047—Cathodes having impregnated bodies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249955—Void-containing component partially impregnated with adjacent component

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
CH60660A 1959-01-23 1960-01-20 Process for the production of an impregnated cathode for electric discharge tubes and a cathode produced by this process CH402197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78860359 US2972078A (en) 1959-01-23 1959-01-23 Carburization of dispenser cathodes

Publications (1)

Publication Number Publication Date
CH402197A true CH402197A (en) 1965-11-15

Family

ID=25144990

Family Applications (1)

Application Number Title Priority Date Filing Date
CH60660A CH402197A (en) 1959-01-23 1960-01-20 Process for the production of an impregnated cathode for electric discharge tubes and a cathode produced by this process

Country Status (9)

Country Link
US (1) US2972078A (en)
AT (1) AT219166B (en)
BE (1) BE586842A (en)
CH (1) CH402197A (en)
DE (1) DE1094887B (en)
DK (1) DK93307C (en)
FR (1) FR1245997A (en)
GB (1) GB919419A (en)
NL (1) NL108689C (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2242986C3 (en) * 1972-09-01 1981-05-07 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Hot cathode
DE2842079A1 (en) * 1978-09-27 1980-04-03 Siemens Ag SUPPLY CATHODE, ESPECIALLY METAL CAPILLARY CATHODE
GB2043991B (en) * 1978-11-30 1983-05-11 Varian Associates Method of fabricating a dispenser cathode
DE3334971A1 (en) * 1983-09-27 1985-04-18 Siemens AG, 1000 Berlin und 8000 München Dispenser cathode, in particular capillary metal cathode
KR910006044B1 (en) * 1988-11-12 1991-08-12 삼성전관 주식회사 Manufacturing method of an electron gun for crt
KR920003185B1 (en) * 1990-01-31 1992-04-23 삼성전관 주식회사 Dispensor cathode and the manufacturing method of the same
FR2803088B1 (en) * 1999-12-22 2002-02-01 Thomson Tubes & Displays METHOD FOR ASSEMBLING A CATHODE FOR A CATHODE RAY TUBE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922244A (en) * 1930-09-13 1933-08-15 Fansteel Prod Co Inc Electrode and method of making the same
BE509019A (en) * 1951-02-08
CH305546A (en) * 1951-02-16 1955-02-28 Siemens Ag Cathode for electrical discharge vessels.

Also Published As

Publication number Publication date
BE586842A (en) 1960-07-22
DK93307C (en) 1962-04-30
US2972078A (en) 1961-02-14
NL108689C (en) 1900-01-01
GB919419A (en) 1963-02-27
FR1245997A (en) 1960-11-10
AT219166B (en) 1962-01-10
DE1094887B (en) 1960-12-15

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