GB571503A - Cathode assembly - Google Patents

Cathode assembly

Info

Publication number
GB571503A
GB571503A GB16415/43A GB1641543A GB571503A GB 571503 A GB571503 A GB 571503A GB 16415/43 A GB16415/43 A GB 16415/43A GB 1641543 A GB1641543 A GB 1641543A GB 571503 A GB571503 A GB 571503A
Authority
GB
United Kingdom
Prior art keywords
axis
electron
cathode assembly
assembly
emitting
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
GB16415/43A
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 GB571503A publication Critical patent/GB571503A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/484—Eliminating deleterious effects due to thermal effects, electrical or magnetic fields; Preventing unwanted emission

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

571,503. Discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 7, 1943, No. 16415. Convention date, Sept. 29, 1942. [Class 39 (i)] In a cathode assembly an electron-emitting member 11 is supported at opposite sides by means 15 in a plane normal to the axis of the electron beam emitted so that thermal expansion of the assembly produces no movement of the member 11 along the axis, any motion produced consisting in a rotation round this axis. The members 15 may be tapered at the ends connected to the member 11 to reduce heat losses therefrom. A centrally-positioned substantially planar portion 13 of electron-emitting material is formed on member 11. In an alternative form member 11 may be square, the two supporting arms being attached at opposite corners thereof. The cathode assembly, an apertured control electrode 3, and a bottom cover-plate 3 are all mounted on ceramic rods 1. Reference has been directed by the Comptroller to Specification 558,429.
GB16415/43A 1942-09-29 1943-10-07 Cathode assembly Expired GB571503A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US460072A US2335818A (en) 1942-09-29 1942-09-29 Cathode assembly

Publications (1)

Publication Number Publication Date
GB571503A true GB571503A (en) 1945-08-28

Family

ID=23827299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16415/43A Expired GB571503A (en) 1942-09-29 1943-10-07 Cathode assembly

Country Status (2)

Country Link
US (1) US2335818A (en)
GB (1) GB571503A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432037A (en) * 1943-08-20 1947-12-02 Kreisler Mfg Corp Jacques Electron gun positioning means
US2468141A (en) * 1944-10-12 1949-04-26 Raytheon Mfg Co Electron discharge device
US2500355A (en) * 1944-11-14 1950-03-14 Sylvania Electric Prod Electron discharge tube
US2740067A (en) * 1952-10-13 1956-03-27 Eitel Mccullough Inc Ceramic vacuum tube
US2843785A (en) * 1954-04-19 1958-07-15 Sylvania Electric Prod Thermal insulation for cathode
US3065374A (en) * 1959-10-12 1962-11-20 Varian Associates Low noise electron discharge device
NL262042A (en) * 1960-03-11
US3289035A (en) * 1962-08-10 1966-11-29 Sfd Lab Inc Reverse magnetron having means to suppress undersired modes
US3333138A (en) * 1965-01-11 1967-07-25 Rauland Corp Support assembly for a low-wattage cathode
DE1639463C3 (en) * 1966-09-10 1978-08-10 Sony Corp., Tokio Electron source and process for its manufacture
DE2606897C3 (en) * 1976-02-20 1981-07-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electron gun of a cathode ray tube
US4740705A (en) * 1986-08-11 1988-04-26 Electron Beam Memories Axially compact field emission cathode assembly

Also Published As

Publication number Publication date
US2335818A (en) 1943-11-30

Similar Documents

Publication Publication Date Title
GB571503A (en) Cathode assembly
GB640255A (en) Improvements in magnetron electron-discharge devices
GB661836A (en) Improvements in or relating to rotary anode x-ray tubes
GB653750A (en) Improvements in or relating to magnetrons
GB588566A (en) Electron discharge device
JPS524772A (en) Field-emission electron gun
GB692239A (en) Improvements in electron discharge devices
GB582173A (en) Improvements in or relating to electron discharge devices employing hollow resonators
GB608677A (en) Improvements in gas-filled electron discharge devices
GB723987A (en) Improvements in or relating to electron discharge devices
GB703172A (en) Improvements in or relating to magnetrons
GB617248A (en) Electron discharge devices of the magnetron type
GB733655A (en) Improvements relating to high frequency electrical transmission devices
GB588370A (en) Improvements in or relating to electron discharge devices
GB670607A (en) Improvements in or relating to electron discharge devices employing secondary electron emission and electrodes for use therein
GB667061A (en) Improvements in or relating to electron discharge tubes
GB835023A (en) Improvements in electric discharge devices
GB626930A (en) Improvements in or relating to magnetrons
GB460700A (en) Improvements in or relating to electron valves
GB543400A (en) Improvements in or relating to electron discharge devices incorporating high-frequency resonators
GB675037A (en) Improvements in or relating to cathode ray tubes
GB602775A (en) Improvements in electron discharge apparatus
GB937449A (en) Improvements relating to magnetron valves
GB650560A (en) Grid-controlled gaseous electron discharge device
GB614264A (en) Improvements in or relating to electron discharge devices