GB519278A - Improvements in or relating to electron discharge tubes - Google Patents

Improvements in or relating to electron discharge tubes

Info

Publication number
GB519278A
GB519278A GB29607/38A GB2960738A GB519278A GB 519278 A GB519278 A GB 519278A GB 29607/38 A GB29607/38 A GB 29607/38A GB 2960738 A GB2960738 A GB 2960738A GB 519278 A GB519278 A GB 519278A
Authority
GB
United Kingdom
Prior art keywords
grid
rods
rod
oct
anode
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
GB29607/38A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB519278A publication Critical patent/GB519278A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/065—Devices for short wave tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

519,278. Thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 12, 1938, No. 29607. Convention date, Oct. 19, 1937. [Class 39 (i)] A thermionic valve has a multi-filament cathode 15 surrounded by a flat grid 18, both being supported on. insulating spacers 16, 17 carried by side rods 20 secured to terminals 11, 12. The anode 24 is a corrugated U-shaped member closed at the side by a channel member 25, Fig. 2. Leads to the anode and grid are taken to terminals 13, 14 respectively at the opposite end of the envelope. The ends of the filament 15 are connected together and to one rod 20, the mid-point being connected to the other rod. The rods 20 are held in channel 'members 21 which have been split up into fingers to allow for variations in rod spacing each finger being separately welded to the rods. Screen members 28 limit the electron stream axially. The flexible grid lead 27 is secured to a bridge 26 between the grid supports 19, which have a limited movement within the lower spacer 17.
GB29607/38A 1937-10-19 1938-10-12 Improvements in or relating to electron discharge tubes Expired GB519278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US169770A US2195474A (en) 1937-10-19 1937-10-19 Electron discharge device

Publications (1)

Publication Number Publication Date
GB519278A true GB519278A (en) 1940-03-20

Family

ID=22617099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29607/38A Expired GB519278A (en) 1937-10-19 1938-10-12 Improvements in or relating to electron discharge tubes

Country Status (2)

Country Link
US (1) US2195474A (en)
GB (1) GB519278A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446460A (en) * 1944-04-07 1948-08-03 Bruce A Coffin Top cap for electron tubes
US2536636A (en) * 1946-11-15 1951-01-02 Rca Corp Lead-in conductor for electron discharge devices
US2547287A (en) * 1948-03-26 1951-04-03 Sanders Louis Liquid applicator
US2867741A (en) * 1949-09-27 1959-01-06 Siemens Ag Electrical discharge tube
US2841734A (en) * 1953-03-27 1958-07-01 Gen Electric High frequency electric discharge device

Also Published As

Publication number Publication date
US2195474A (en) 1940-04-02

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