FR1221240A - Cathode à forte densité d'émission pour tubes électroniques - Google Patents

Cathode à forte densité d'émission pour tubes électroniques

Info

Publication number
FR1221240A
FR1221240A FR788490A FR788490A FR1221240A FR 1221240 A FR1221240 A FR 1221240A FR 788490 A FR788490 A FR 788490A FR 788490 A FR788490 A FR 788490A FR 1221240 A FR1221240 A FR 1221240A
Authority
FR
France
Prior art keywords
high emission
electron tubes
emission density
density cathode
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
FR788490A
Other languages
English (en)
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.)
Varian Medical Systems Inc
Original Assignee
Eitel Mccullough Inc
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 Eitel Mccullough Inc filed Critical Eitel Mccullough Inc
Application granted granted Critical
Publication of FR1221240A publication Critical patent/FR1221240A/fr
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
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12007—Component of composite having metal continuous phase interengaged with nonmetal continuous phase
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12042—Porous component
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12139—Nonmetal particles in particulate component
    • 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
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12944—Ni-base component
FR788490A 1958-03-12 1959-03-05 Cathode à forte densité d'émission pour tubes électroniques Expired FR1221240A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US721039A US3031740A (en) 1958-03-12 1958-03-12 Matrix type cathode

Publications (1)

Publication Number Publication Date
FR1221240A true FR1221240A (fr) 1960-05-31

Family

ID=24896273

Family Applications (1)

Application Number Title Priority Date Filing Date
FR788490A Expired FR1221240A (fr) 1958-03-12 1959-03-05 Cathode à forte densité d'émission pour tubes électroniques

Country Status (3)

Country Link
US (1) US3031740A (fr)
FR (1) FR1221240A (fr)
GB (1) GB914509A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257703A (en) * 1961-09-29 1966-06-28 Texas Instruments Inc Composite electrode materials, articles made therefrom and methods of making the same
US3224906A (en) * 1963-06-18 1965-12-21 Deibel Charles Acid-resistant material for use in protecting battery terminals and the like
US3879830A (en) * 1971-06-30 1975-04-29 Gte Sylvania Inc Cathode for electron discharge device having highly adherent emissive coating of nickel and nickel coated carbonates
TW375753B (en) * 1995-12-27 1999-12-01 Mitsubishi Electric Corp Electron tube cathode

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899299A (en) * 1959-08-11 Method of manufacturing sintered
US2147447A (en) * 1936-09-21 1939-02-14 Siemens Ag Glow cathode
NL59317C (fr) * 1941-10-15 1946-06-15
US2543439A (en) * 1945-05-02 1951-02-27 Edward A Coomes Method of manufacturing coated elements for electron tubes
GB710648A (en) * 1951-04-12 1954-06-16 Standard Telephones Cables Ltd Improvements in or relating to thermionic cathodes

Also Published As

Publication number Publication date
US3031740A (en) 1962-05-01
GB914509A (en) 1963-01-02

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