GB460373A - Improvements in or relating to electric discharge devices having cold cathodes - Google Patents

Improvements in or relating to electric discharge devices having cold cathodes

Info

Publication number
GB460373A
GB460373A GB2128835A GB2128835A GB460373A GB 460373 A GB460373 A GB 460373A GB 2128835 A GB2128835 A GB 2128835A GB 2128835 A GB2128835 A GB 2128835A GB 460373 A GB460373 A GB 460373A
Authority
GB
United Kingdom
Prior art keywords
constriction
electric discharge
cold cathodes
discharge devices
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
GB2128835A
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.)
General Electric Co PLC
Original Assignee
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2128835A priority Critical patent/GB460373A/en
Publication of GB460373A publication Critical patent/GB460373A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes
    • H01J17/066—Cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
    • H01J2893/0065—Electrode systems
    • H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups

Landscapes

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

Abstract

460,373. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., and JENKINS, H. G. July 26, 1935, No. 21288. [Class 39 (i)] In electric discharge devices having cold cathodes, at least one of the main electrodes 5 is hollow with a glass coating 6 on its edge, which abuts on or is so near to a constriction 3 in the wall of the envelope, that the discharge cannot pass between the coated edge and the constriction. The electrode is supported solely by its leading-in wires 9. The constriction may be formed by a mica washer fixed to the envelope wall and pierced centrally. A filling of mercury is used. U.S.A. Specification 1,984,482 is referred to.
GB2128835A 1935-07-26 1935-07-26 Improvements in or relating to electric discharge devices having cold cathodes Expired GB460373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2128835A GB460373A (en) 1935-07-26 1935-07-26 Improvements in or relating to electric discharge devices having cold cathodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2128835A GB460373A (en) 1935-07-26 1935-07-26 Improvements in or relating to electric discharge devices having cold cathodes

Publications (1)

Publication Number Publication Date
GB460373A true GB460373A (en) 1937-01-26

Family

ID=10160346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2128835A Expired GB460373A (en) 1935-07-26 1935-07-26 Improvements in or relating to electric discharge devices having cold cathodes

Country Status (1)

Country Link
GB (1) GB460373A (en)

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