GB675456A - Improvements in or relating to cathodes for electric discharge tubes - Google Patents

Improvements in or relating to cathodes for electric discharge tubes

Info

Publication number
GB675456A
GB675456A GB25609/50A GB2560950A GB675456A GB 675456 A GB675456 A GB 675456A GB 25609/50 A GB25609/50 A GB 25609/50A GB 2560950 A GB2560950 A GB 2560950A GB 675456 A GB675456 A GB 675456A
Authority
GB
United Kingdom
Prior art keywords
tube
porous
molybdenum
welded
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
GB25609/50A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB675456A publication Critical patent/GB675456A/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
    • 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
    • Y10T428/1209—Plural particulate metal components

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Powder Metallurgy (AREA)
GB25609/50A 1949-10-25 1950-10-20 Improvements in or relating to cathodes for electric discharge tubes Expired GB675456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL292225X 1949-10-25

Publications (1)

Publication Number Publication Date
GB675456A true GB675456A (en) 1952-07-09

Family

ID=19782811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25609/50A Expired GB675456A (en) 1949-10-25 1950-10-20 Improvements in or relating to cathodes for electric discharge tubes

Country Status (6)

Country Link
US (1) US2673277A (enrdf_load_stackoverflow)
BE (1) BE498869A (enrdf_load_stackoverflow)
CH (1) CH292225A (enrdf_load_stackoverflow)
DE (1) DE837273C (enrdf_load_stackoverflow)
FR (1) FR1026424A (enrdf_load_stackoverflow)
GB (1) GB675456A (enrdf_load_stackoverflow)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL91413C (enrdf_load_stackoverflow) * 1951-03-22
DE890390C (de) * 1951-07-12 1953-09-17 Siemens Ag Kathode fuer elektrische Entladungsgefaesse
CH315203A (de) * 1952-03-24 1956-07-31 Siemens Ag Kathode für elektrische Entladungsgefässe
US2814754A (en) * 1952-08-28 1957-11-26 Raytheon Mfg Co Indirectly-heated cathodes
NL89470C (enrdf_load_stackoverflow) * 1953-03-04
DE1025999B (de) * 1953-03-04 1958-03-13 Egyesuelt Izzolampa Vorratskathode, bei der der Vorrat, mindestens nach der Aktivierung, einen Gehalt an Bariumoxyd aufweist
BE548876A (enrdf_load_stackoverflow) * 1953-08-14
NL96853C (enrdf_load_stackoverflow) * 1953-09-24
BE533455A (enrdf_load_stackoverflow) * 1953-11-18
DE1021956B (de) * 1953-12-22 1958-01-02 Siemens Ag Verfahren zur Herstellung einer Kathode fuer elektrische Entladungsgefaesse
BE534280A (enrdf_load_stackoverflow) * 1953-12-22
DE1068818B (enrdf_load_stackoverflow) * 1954-06-16 1959-11-12
NL96647C (enrdf_load_stackoverflow) * 1955-08-23
NL100722C (enrdf_load_stackoverflow) * 1956-10-24
JPS5537920A (en) * 1978-09-11 1980-03-17 Toyota Motor Corp Production of oxygen sensor element
DE2842079A1 (de) * 1978-09-27 1980-04-03 Siemens Ag Vorratskathode, insbesondere metall- kapillar-kathode
EP0272881B1 (en) * 1986-12-19 1995-03-15 Kabushiki Kaisha Toshiba Indirectly heated cathode structure for electron tubes
KR920004900B1 (ko) * 1990-03-13 1992-06-22 삼성전관 주식회사 함침형 음극구조체와 그 제조방법

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2011121A (en) * 1934-06-06 1935-08-13 Smith Corp A O Method of making welded irregular shaped hollow articles
US2021119A (en) * 1934-06-22 1935-11-12 Mccord Radiator & Mfg Co Method of making pressure cartridges
US2121589A (en) * 1934-06-28 1938-06-21 Westinghouse Electric & Mfg Co Emissive incandescent cathode
US2131204A (en) * 1936-01-15 1938-09-27 Siemens Ag Indirectly heated thermionic cathode
US2354947A (en) * 1940-08-30 1944-08-01 Thompson Prod Inc Hollow head poppet valve
US2375808A (en) * 1943-02-16 1945-05-15 Samuel C Miller Electrode for luminous tubes
US2506747A (en) * 1946-06-18 1950-05-09 Smith Roger Olof Device for the end welding of studs
BE486002A (enrdf_load_stackoverflow) * 1947-11-26
US2492619A (en) * 1948-01-02 1949-12-27 Sylvania Electric Prod Electrical discharge tube

Also Published As

Publication number Publication date
DE837273C (de) 1952-04-21
FR1026424A (fr) 1953-04-28
BE498869A (enrdf_load_stackoverflow)
CH292225A (de) 1953-07-31
US2673277A (en) 1954-03-23

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