GB1483120A - Grid electrodes for thermionic valves and a method for their manufacture - Google Patents

Grid electrodes for thermionic valves and a method for their manufacture

Info

Publication number
GB1483120A
GB1483120A GB47851/74A GB4785174A GB1483120A GB 1483120 A GB1483120 A GB 1483120A GB 47851/74 A GB47851/74 A GB 47851/74A GB 4785174 A GB4785174 A GB 4785174A GB 1483120 A GB1483120 A GB 1483120A
Authority
GB
United Kingdom
Prior art keywords
electrographite
fibres
nov
manufacture
grid electrodes
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
GB47851/74A
Other languages
English (en)
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1483120A publication Critical patent/GB1483120A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • 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
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/38—Control electrodes, e.g. grid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • 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
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0015—Non-sealed electrodes
    • H01J2893/0017—Cylindrical, helical or annular grids
    • 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
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Fibers (AREA)
  • Carbon And Carbon Compounds (AREA)
GB47851/74A 1973-11-07 1974-11-05 Grid electrodes for thermionic valves and a method for their manufacture Expired GB1483120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1564973A CH566072A5 (US06236872-20010522-M00003.png) 1973-11-07 1973-11-07

Publications (1)

Publication Number Publication Date
GB1483120A true GB1483120A (en) 1977-08-17

Family

ID=4410811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47851/74A Expired GB1483120A (en) 1973-11-07 1974-11-05 Grid electrodes for thermionic valves and a method for their manufacture

Country Status (6)

Country Link
US (1) US3971964A (US06236872-20010522-M00003.png)
CH (1) CH566072A5 (US06236872-20010522-M00003.png)
DE (2) DE2358583A1 (US06236872-20010522-M00003.png)
FR (1) FR2250195B3 (US06236872-20010522-M00003.png)
GB (1) GB1483120A (US06236872-20010522-M00003.png)
NL (1) NL7414383A (US06236872-20010522-M00003.png)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623828A1 (de) * 1976-05-28 1977-12-08 Philips Patentverwaltung Elektrode, insbesondere gitterfoermige elektrode fuer elektronenroehren, und verfahren zu deren herstellung
GB1514591A (en) * 1976-01-29 1978-06-14 English Electric Valve Co Ltd Electronic valves
FR2439474A1 (fr) * 1978-10-20 1980-05-16 Thomson Csf Procede de preparation de grilles en graphite pyrolytique de tube electronique, grille preparee suivant ce procede, et tube electronique comportant une telle grille
SU1149329A1 (ru) * 1981-02-13 1985-04-07 Организация П/Я Х-5263 Сетчатый электрод дл электронного прибора и способ его изготовлени
US4417175A (en) * 1981-05-15 1983-11-22 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ion sputter textured graphite electrode plates
EP0155464B1 (de) 1984-02-07 1988-05-11 Asea Brown Boveri Ag Hochleistungs-Elektronenröhre
IT1252474B (it) * 1991-07-31 1995-06-16 Proel Tecnologie Spa Metodo per la realizzazione di griglie di estrazione per la generazione di ioni e griglie realizzate secondo detto metodo
US10424455B2 (en) * 2017-07-22 2019-09-24 Modern Electron, LLC Suspended grid structures for electrodes in vacuum electronics
US10811212B2 (en) 2017-07-22 2020-10-20 Modern Electron, LLC Suspended grid structures for electrodes in vacuum electronics

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2264735A (en) * 1938-12-13 1941-12-02 Western Electric Co Vacuum tube grid
US2513387A (en) * 1947-08-26 1950-07-04 Standard Telephones Cables Ltd Grid electrode
US2946915A (en) * 1954-07-21 1960-07-26 Gen Electric Grid construction
US3304458A (en) * 1963-07-25 1967-02-14 Machlett Lab Inc Vibration resistant electron tube
US3465400A (en) * 1967-02-01 1969-09-09 Varian Associates Method of making cylindrical mesh electrode for electron tubes

Also Published As

Publication number Publication date
NL7414383A (nl) 1975-05-12
DE2358583A1 (de) 1975-05-22
US3971964A (en) 1976-07-27
CH566072A5 (US06236872-20010522-M00003.png) 1975-08-29
FR2250195B3 (US06236872-20010522-M00003.png) 1977-08-05
DE7341925U (de) 1975-11-20
FR2250195A1 (US06236872-20010522-M00003.png) 1975-05-30

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed