[go: up one dir, main page]

GB639797A - Improvements in and relating to oxide-coated electrodes for electric discharge lamps - Google Patents

Improvements in and relating to oxide-coated electrodes for electric discharge lamps

Info

Publication number
GB639797A
GB639797A GB2264047A GB2264047A GB639797A GB 639797 A GB639797 A GB 639797A GB 2264047 A GB2264047 A GB 2264047A GB 2264047 A GB2264047 A GB 2264047A GB 639797 A GB639797 A GB 639797A
Authority
GB
United Kingdom
Prior art keywords
oxide
relating
electric discharge
discharge lamps
coated electrodes
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
GB2264047A
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.)
RONALD OSMOND JENKINS
General Electric Co PLC
Original Assignee
RONALD OSMOND JENKINS
General Electric Co PLC
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 RONALD OSMOND JENKINS, General Electric Co PLC filed Critical RONALD OSMOND JENKINS
Priority to GB2264047A priority Critical patent/GB639797A/en
Publication of GB639797A publication Critical patent/GB639797A/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

Landscapes

  • Discharge Lamp (AREA)

Abstract

An arc discharge lamp contains an oxide-coated electrode, the core of which consists of an alloy consisting of not less than 10 per cent, preferably 50 per cent, by weight of each of tungsten and molybdenum. The alloy may be produced by pressing and sintering a mixture of metal powders, or by reducing the mixed oxides in hydrogen.
GB2264047A 1947-08-14 1947-08-14 Improvements in and relating to oxide-coated electrodes for electric discharge lamps Expired GB639797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2264047A GB639797A (en) 1947-08-14 1947-08-14 Improvements in and relating to oxide-coated electrodes for electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2264047A GB639797A (en) 1947-08-14 1947-08-14 Improvements in and relating to oxide-coated electrodes for electric discharge lamps

Publications (1)

Publication Number Publication Date
GB639797A true GB639797A (en) 1950-07-05

Family

ID=10182706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2264047A Expired GB639797A (en) 1947-08-14 1947-08-14 Improvements in and relating to oxide-coated electrodes for electric discharge lamps

Country Status (1)

Country Link
GB (1) GB639797A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998027575A1 (en) * 1996-12-18 1998-06-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Sintering electrode
WO2006077516A2 (en) * 2005-01-19 2006-07-27 Koninklijke Philips Electronics N.V. High-pressure discharge lamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998027575A1 (en) * 1996-12-18 1998-06-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Sintering electrode
US6218025B1 (en) 1996-12-18 2001-04-17 Patent- Truchand-Gesellschaft Fuer Elektrische Gluelampen Mbh Sintering electrode
WO2006077516A2 (en) * 2005-01-19 2006-07-27 Koninklijke Philips Electronics N.V. High-pressure discharge lamp
WO2006077516A3 (en) * 2005-01-19 2007-10-11 Koninkl Philips Electronics Nv High-pressure discharge lamp
US7952284B2 (en) 2005-01-19 2011-05-31 Koninklijke Philips Electronics N.V. High-pressure discharge lamp

Similar Documents

Publication Publication Date Title
GB504120A (en) Improvements in electrodes for high-pressure mercury-vapour discharge devices
GB588074A (en) Improvements in and connected with sparking plugs
GB739367A (en) Improvements in or relating to electron emissive electrodes for electrical dischargedevices
GB639797A (en) Improvements in and relating to oxide-coated electrodes for electric discharge lamps
GB666053A (en) Improvements in or relating to thermionic cathodes
GB978004A (en) Improvements in or relating to electric discharge devices
GB670593A (en) Improvements in or relating to electron discharge devices employing secondary-electron-emission and electrodes for use therein
GB670561A (en) Improvements in or relating to electron discharge devices employing secondary-electron emission and electrodes for use therein
GB697613A (en) High intensity positive carbon electrodes
GB639044A (en) Improvements in or relating to electric discharge and electrodes therefor
GB586150A (en) Improvements in or relating to electron discharge apparatus
GB639584A (en) Improvements in and relating to electrode mount assemblies for electric gaseous discharge devices
GB450552A (en) Improvements in or relating to electric arc electrodes
GB707265A (en) Improvements in or relating to electrical discharge lamps
GB640681A (en) Improvements in and relating to resistance welding electrodes
GB719356A (en) Controlled electric sparking system for stroboscopes and the like
GB580655A (en) Improvements in hermetically sealed spark gaps
FR2298882A1 (en) Three-phase gas discharge lamp - has four main electrodes forming three subsequent axial discharge paths
GB688825A (en) Improvements in or relating to electrical condensers
GB215347A (en) Improvements in and relating to the manufacture of sintered tungsten and filaments made therefrom
GB459038A (en) Improvements in and relating to electric discharge devices
GB657202A (en) Non-alloying zirconium coating material
GB690792A (en) Device for igniting single or multi-anode electric converters of the mercury pool type
ES209091A1 (en) An electric discharge device in gas (Machine-translation by Google Translate, not legally binding)
GB665342A (en) Improvements relating to electric discharge lamps