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

Similar Documents

Publication Publication Date Title
GB734311A (en) Improvements in or relating to cathodes for use in electric discharge tubes, tubes comprising such cathodes and methods of manufacturing such cathodes
US4279784A (en) Thermionic emission cathodes
GB705537A (en) Improvements in or relating to a method of manufacturing cathodes for use in electric discharge tubes and to cathodes manufactured by this method
US3159461A (en) Thermionic cathode
GB713140A (en) Improvements in or relating to the manufacture of dispenser cathodes
GB739367A (en) Improvements in or relating to electron emissive electrodes for electrical dischargedevices
GB1389636A (en) Short-arc gas discharge lamp
GB1378138A (en) Thermionic cathode for an electric discharge tube
GB1191463A (en) Improvements relating to Low-Pressure Mercury Vapour Discharge Lamps
GB666053A (en) Improvements in or relating to thermionic cathodes
US4117367A (en) High-pressure discharge lamp
GB739232A (en) Improvements in or relating to dispenser cathodes
GB899164A (en) Improvements in or relating to brazing or the like
GB1294383A (en) Discharge lamps having improved thermionic cathodes
GB1038775A (en) Improvements in or relating to cathode elements
US2737607A (en) Incandescible cathode
GB994151A (en) Improvements in or relating to electric discharge tubes
GB777142A (en) Improvements in or relating to cathode bodies for use in electric discharge tubes
US3105290A (en) Cathode for electron discharge device
GB2188771A (en) Dispenser cathode
JP3436609B2 (ja) 放電管及びその製造法
GB943535A (en) Improvements in or relating to discharge lamps
GB790899A (en) Improvements in or relating to supply cathodes
GB929668A (en) Improvements in or relating to electrodes for electric discharge apparatus
GB753280A (en) Improvements in or relating to cathodes for use in electric discharge tubes