FR1245997A - Impregnated cathode for an electron tube and its manufacturing process - Google Patents

Impregnated cathode for an electron tube and its manufacturing process

Info

Publication number
FR1245997A
FR1245997A FR816505A FR816505A FR1245997A FR 1245997 A FR1245997 A FR 1245997A FR 816505 A FR816505 A FR 816505A FR 816505 A FR816505 A FR 816505A FR 1245997 A FR1245997 A FR 1245997A
Authority
FR
France
Prior art keywords
manufacturing process
electron tube
impregnated cathode
impregnated
cathode
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
FR816505A
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 FR1245997A publication Critical patent/FR1245997A/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
    • H01J1/28—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)
FR816505A 1959-01-23 1960-01-23 Impregnated cathode for an electron tube and its manufacturing process Expired FR1245997A (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
FR1245997A true FR1245997A (en) 1960-11-10

Family

ID=25144990

Family Applications (1)

Application Number Title Priority Date Filing Date
FR816505A Expired FR1245997A (en) 1959-01-23 1960-01-23 Impregnated cathode for an electron tube and its manufacturing 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
US2972078A (en) 1961-02-14
GB919419A (en) 1963-02-27
DK93307C (en) 1962-04-30
CH402197A (en) 1965-11-15
AT219166B (en) 1962-01-10
BE586842A (en) 1960-07-22
NL108689C (en) 1900-01-01
DE1094887B (en) 1960-12-15

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