GB705537A - Improvements in or relating to a method of manufacturing cathodes for use in electric discharge tubes and to cathodes manufactured by this method - Google Patents

Improvements in or relating to a method of manufacturing cathodes for use in electric discharge tubes and to cathodes manufactured by this method

Info

Publication number
GB705537A
GB705537A GB7101/52A GB710152A GB705537A GB 705537 A GB705537 A GB 705537A GB 7101/52 A GB7101/52 A GB 7101/52A GB 710152 A GB710152 A GB 710152A GB 705537 A GB705537 A GB 705537A
Authority
GB
United Kingdom
Prior art keywords
per cent
cathodes
tungsten
march
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
GB7101/52A
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 GB705537A publication Critical patent/GB705537A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Discharge Lamp (AREA)
GB7101/52A 1951-03-22 1952-03-19 Improvements in or relating to a method of manufacturing cathodes for use in electric discharge tubes and to cathodes manufactured by this method Expired GB705537A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21697251A 1951-03-22 1951-03-22
US555221A US3010826A (en) 1951-03-22 1955-12-14 Method of making dispenser type cathodes

Publications (1)

Publication Number Publication Date
GB705537A true GB705537A (en) 1954-03-17

Family

ID=26911501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7101/52A Expired GB705537A (en) 1951-03-22 1952-03-19 Improvements in or relating to a method of manufacturing cathodes for use in electric discharge tubes and to cathodes manufactured by this method

Country Status (7)

Country Link
US (1) US3010826A (xx)
BE (1) BE510092A (xx)
CH (1) CH311391A (xx)
DE (1) DE927518C (xx)
FR (1) FR1066084A (xx)
GB (1) GB705537A (xx)
NL (1) NL91413C (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967137C (de) * 1953-02-05 1957-10-10 Csf Verfahren zur Herstellung einer Kathode fuer elektrische Entladungsgefaesse, bei der senkrecht zur emittierenden Oberflaeche sich erstreckende Draehte einen Vorrat an Emissionsstoffen abschliessen
US3258636A (en) * 1961-09-01 1966-06-28 Electron emitter with activator of sill cide, boride or carbide of solid solu- tion of barium and at least one other alkaline earth metal
JPH11339633A (ja) * 1997-11-04 1999-12-10 Sony Corp 含浸型陰極およびその製造方法、並びに電子銃および電子管

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1390243A (en) * 1919-09-15 1921-09-06 Gen Electric Method of welding low-melting-point metals and alloys to high-melting-point metals
US1671953A (en) * 1927-07-15 1928-05-29 Gen Electric Process for making x-ray anodes
US1904568A (en) * 1929-05-14 1933-04-18 Gen Electric Disk-like cutting tool
US2121589A (en) * 1934-06-28 1938-06-21 Westinghouse Electric & Mfg Co Emissive incandescent cathode
US2492142A (en) * 1945-10-17 1949-12-27 Kenneth J Germeshausen Electric system embodying coldcathode gaseous discharge device
US2677873A (en) * 1946-01-10 1954-05-11 Us Navy Method of making nickel sponge cathodes
BE486002A (xx) * 1947-11-26
BE498869A (xx) * 1949-10-25

Also Published As

Publication number Publication date
BE510092A (xx)
FR1066084A (fr) 1954-06-02
DE927518C (de) 1955-05-09
US3010826A (en) 1961-11-28
CH311391A (de) 1955-11-30
NL91413C (xx)

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