GB661564A - Improvements relating to electric discharge devices such as tubular lamps - Google Patents

Improvements relating to electric discharge devices such as tubular lamps

Info

Publication number
GB661564A
GB661564A GB1975648A GB1975648A GB661564A GB 661564 A GB661564 A GB 661564A GB 1975648 A GB1975648 A GB 1975648A GB 1975648 A GB1975648 A GB 1975648A GB 661564 A GB661564 A GB 661564A
Authority
GB
United Kingdom
Prior art keywords
filament
electric discharge
improvements relating
discharge devices
tubular lamps
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
GB1975648A
Inventor
William Harry Ridout
Maurice George Clarke
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1975648A priority Critical patent/GB661564A/en
Publication of GB661564A publication Critical patent/GB661564A/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

Landscapes

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

Abstract

661,564. Electric discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd. May 11, 1949 [July 23, 1948], No. 19756/48. Class 39 (i). An electrode structure for a low pressure metal vapour discharge device, e.g. a fluorescent lamp, comprises a coiled filament 1 shielded from the main discharge by two closely spaced flat plates 5 mounted either side by side or end to end, parallel to the axis of the filament 1, and connected one to each end of the filament. The plates may alternatively be curved to surround the filament.
GB1975648A 1948-07-23 1948-07-23 Improvements relating to electric discharge devices such as tubular lamps Expired GB661564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1975648A GB661564A (en) 1948-07-23 1948-07-23 Improvements relating to electric discharge devices such as tubular lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1975648A GB661564A (en) 1948-07-23 1948-07-23 Improvements relating to electric discharge devices such as tubular lamps

Publications (1)

Publication Number Publication Date
GB661564A true GB661564A (en) 1951-11-21

Family

ID=10134689

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1975648A Expired GB661564A (en) 1948-07-23 1948-07-23 Improvements relating to electric discharge devices such as tubular lamps

Country Status (1)

Country Link
GB (1) GB661564A (en)

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