GB639584A - Improvements in and relating to electrode mount assemblies for electric gaseous discharge devices - Google Patents

Improvements in and relating to electrode mount assemblies for electric gaseous discharge devices

Info

Publication number
GB639584A
GB639584A GB21076/47A GB2107647A GB639584A GB 639584 A GB639584 A GB 639584A GB 21076/47 A GB21076/47 A GB 21076/47A GB 2107647 A GB2107647 A GB 2107647A GB 639584 A GB639584 A GB 639584A
Authority
GB
United Kingdom
Prior art keywords
stem
electrodes
coated
bulb
relating
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
GB21076/47A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB639584A publication Critical patent/GB639584A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)

Abstract

639,584. Discharge apparatus. SYLVANIA ELECTRIC PRODUCTS, Inc. Aug. 1, 1947, No. 21076. Convention date, May 23, 1946. [Class 39 (i)] A pair of electrodes, which are supported on the stem of a discharge device. and are coated externally with electron-emissive material, comprise like halves of a frustoconical structure, the longitudinal adjacent edges of which are spaced apart a short distance. A glow discharge lamp has two wires which are sealed in a stem 8 and are spot-welded, each at one point, within crimped wings 26 of the electrodes 2, 3 which may be provided with strengthening ribs 29. The electrode structure is arranged to extend over the stem 8 and in such manner that the apex lies within the bulb. A ballast resistance is housed within the stem 'which is provided with an exhaust tube 15. The electrodes may be coated externally with one or more oxides of alkaline earth metals and internally with a getter such as zirconium or titanium powder which reduce electron emission. The bulb may be coated with fluorescent material.
GB21076/47A 1946-05-23 1947-08-01 Improvements in and relating to electrode mount assemblies for electric gaseous discharge devices Expired GB639584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US671688A US2446157A (en) 1946-05-23 1946-05-23 Electrode

Publications (1)

Publication Number Publication Date
GB639584A true GB639584A (en) 1950-06-28

Family

ID=24695517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21076/47A Expired GB639584A (en) 1946-05-23 1947-08-01 Improvements in and relating to electrode mount assemblies for electric gaseous discharge devices

Country Status (2)

Country Link
US (1) US2446157A (en)
GB (1) GB639584A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515699A (en) * 1946-09-20 1950-07-18 Gen Electric Glow discharge lamp
US2820920A (en) * 1952-09-17 1958-01-21 Claude Ets Manufacture of coated electrodes
US2976450A (en) * 1957-08-22 1961-03-21 Osmond D Benoliel Flickering electric candle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1816690A (en) * 1924-11-07 1931-07-28 Gen Electric Gaseous conduction lamp
US1879158A (en) * 1928-12-19 1932-09-27 Gen Electric Vapor Lamp Co Glow discharge lamp
US1965586A (en) * 1931-01-06 1934-07-10 Gen Electric Vapor Lamp Co Gaseous electric discharge device
GB411683A (en) * 1932-06-17 1934-06-14 British Thomson Houston Co Ltd Improvements in and relating to gaseous discharge lamps and methods of manufacturing the same
FR819881A (en) * 1936-07-03 1937-10-28 Silec Liaisons Elec Improvements to the projection of invisible radiation
FR855703A (en) * 1940-01-22 1940-05-18 Luminescent lamps
US2409769A (en) * 1944-07-28 1946-10-22 Sylvania Electric Prod Fluorescent glow lamp
US2413650A (en) * 1945-06-08 1946-12-31 Sylvania Electric Prod Glow discharge lamp

Also Published As

Publication number Publication date
US2446157A (en) 1948-07-27

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