GB211825A - Improvements in or relating to electric discharge-tubes with a glow cathode - Google Patents

Improvements in or relating to electric discharge-tubes with a glow cathode

Info

Publication number
GB211825A
GB211825A GB20240/23A GB2024023A GB211825A GB 211825 A GB211825 A GB 211825A GB 20240/23 A GB20240/23 A GB 20240/23A GB 2024023 A GB2024023 A GB 2024023A GB 211825 A GB211825 A GB 211825A
Authority
GB
United Kingdom
Prior art keywords
tubes
relating
electric discharge
glow 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
GB20240/23A
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
Publication of GB211825A publication Critical patent/GB211825A/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
    • H01J1/14—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
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12812—Diverse refractory group metal-base components: alternative to or next to each other
    • 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
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/1284—W-base component

Landscapes

  • Discharge Lamp (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

211,825. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Feb. 21,1923, [Convention date]. Vacuum tubes; R÷ntgen-ray tubes.-A cathode is made wholly or partly of hafnium. It is stated that the metal has a high-electron emissivity with a low rate of volatilization. The surface of tungsten or other material may be coated wholly or partly with the metal.
GB20240/23A 1923-02-21 1923-08-08 Improvements in or relating to electric discharge-tubes with a glow cathode Expired GB211825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR423178X 1923-02-21

Publications (1)

Publication Number Publication Date
GB211825A true GB211825A (en) 1924-05-01

Family

ID=8898679

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20240/23A Expired GB211825A (en) 1923-02-21 1923-08-08 Improvements in or relating to electric discharge-tubes with a glow cathode

Country Status (5)

Country Link
US (1) US1701849A (en)
DE (1) DE423178C (en)
FR (1) FR573663A (en)
GB (1) GB211825A (en)
NL (1) NL13930C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174063A (en) * 1960-04-27 1965-03-16 Gen Electric Compatible electrode system in vacuum thermionic apparatus

Also Published As

Publication number Publication date
US1701849A (en) 1929-02-12
FR573663A (en) 1924-06-27
NL13930C (en)
DE423178C (en) 1925-12-21

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