GB1011587A - Grid electrode - Google Patents

Grid electrode

Info

Publication number
GB1011587A
GB1011587A GB8073/63A GB807363A GB1011587A GB 1011587 A GB1011587 A GB 1011587A GB 8073/63 A GB8073/63 A GB 8073/63A GB 807363 A GB807363 A GB 807363A GB 1011587 A GB1011587 A GB 1011587A
Authority
GB
United Kingdom
Prior art keywords
graphite
grid
orientated
grid electrode
coated
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
GB8073/63A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of GB1011587A publication Critical patent/GB1011587A/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
    • 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
    • H01J2893/0021—Chemical composition and manufacture chemical carbon

Abstract

A grid electrode comprises at least a surface layer of orientated graphite applied so that its maximum heat conductivity is generally parallel to the surface. The grid may comprise a core of ordinary commercial graphite coated with orientated graphite by heating to 1500 DEG C. or more in a hydrocarbon, e.g. methane, acetylene or benzene. Alternatively, the grid may be constituted entirely of orientated graphite, an ordinary graphite core being coated as above and subsequently separated from the deposited coating. Specification 1,011,588 is referred to. <PICT:1011587/C1/1>
GB8073/63A 1962-03-02 1963-02-28 Grid electrode Expired GB1011587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR889759A FR1344220A (en) 1962-03-02 1962-03-02 Grid for electron tubes

Publications (1)

Publication Number Publication Date
GB1011587A true GB1011587A (en) 1965-12-01

Family

ID=8773876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8073/63A Expired GB1011587A (en) 1962-03-02 1963-02-28 Grid electrode

Country Status (7)

Country Link
US (1) US3307063A (en)
CH (1) CH415872A (en)
DE (1) DE1194988C2 (en)
ES (1) ES285347A1 (en)
FR (1) FR1344220A (en)
GB (1) GB1011587A (en)
NL (1) NL139841B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190470A1 (en) * 1985-01-28 1986-08-13 Koninklijke Philips Electronics N.V. Electron tube

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1523248A (en) * 1967-03-07 1968-05-03 Thomson Houston Comp Francaise Improvements in methods of manufacturing electrodes in the form of grids for electron tubes, electrodes manufactured using these improved methods and electron tubes containing such electrodes
FR1593831A (en) * 1967-12-13 1970-06-01
DE2450261C3 (en) * 1974-10-23 1980-06-26 Philips Patentverwaltung Gmbh, 2000 Hamburg Process for the production of grid electrodes for electron tubes
DE2623828A1 (en) * 1976-05-28 1977-12-08 Philips Patentverwaltung ELECTRODE, IN PARTICULAR GRID-SHAPED ELECTRODE FOR ELECTRONIC TUBES, AND METHOD FOR MANUFACTURING THEREOF
DE2613170B2 (en) * 1976-03-27 1978-10-12 Philips Patentverwaltung Gmbh, 2000 Hamburg Process for the production of grid electrodes for electron tubes
FR2432215A1 (en) * 1978-07-27 1980-02-22 Thomson Csf ELECTRONIC TUBE WITH CYLINDRICAL GRID IN PYROLYTIC GRAPHITE
DE2838020B2 (en) * 1978-08-31 1981-04-02 Siemens AG, 1000 Berlin und 8000 München Directly heated cathode for an electron tube with a coaxial electrode structure and process for its manufacture
FR2437060A1 (en) * 1978-09-19 1980-04-18 Thomson Csf PROCESS FOR MANUFACTURING PLANAR GRIDS IN PYROLYTIC GRAPHITE FOR ELECTRONIC TUBES
US4277718A (en) * 1979-11-07 1981-07-07 Varian Associates, Inc. Modular electron tube with carbon grid
CS224267B1 (en) * 1980-12-24 1984-01-16 Slavomir Ing Zizka Power tube grid
SU1149329A1 (en) * 1981-02-13 1985-04-07 Организация П/Я Х-5263 Grid electrode for electronic equipment and process for manufacturing it
NL8300191A (en) * 1983-01-19 1984-08-16 Philips Nv ELECTRIC DISCHARGE TUBE.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172774A (en) * 1965-03-09 Method of forming composite graphite coated article
US1612835A (en) * 1917-01-23 1927-01-04 Siemens Ag Intermediate electrode in incandescent cathode tube
CA353329A (en) * 1931-11-09 1935-10-01 The Canadian General Electric Company Arc discharge apparatus
US2054234A (en) * 1933-07-29 1936-09-15 Hygrade Sylvania Corp Electric discharge device
US2101462A (en) * 1935-03-13 1937-12-07 Farnsworth Television Inc Grid
US2193600A (en) * 1935-04-10 1940-03-12 Westinghouse Electric & Mfg Co Carbon grid for transmitting vacuum tubes
GB830532A (en) * 1957-07-12 1960-03-16 Standard Telephones Cables Ltd Improvements in or relating to electron discharge tubes
NL259428A (en) * 1959-12-23
US3187502A (en) * 1961-01-23 1965-06-08 Gen Electric Rocket nozzle
US3138434A (en) * 1961-04-26 1964-06-23 Gen Electric Deposition method of forming a pyrolytic graphite article
FR1323676A (en) * 1962-02-28 1963-04-12 Thomson Houston Comp Francaise electrode for electron tubes and method of its manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190470A1 (en) * 1985-01-28 1986-08-13 Koninklijke Philips Electronics N.V. Electron tube
US4739213A (en) * 1985-01-28 1988-04-19 Spitters Antonius M M Electron tube with support for pyrolytic graphite electrode

Also Published As

Publication number Publication date
DE1194988B (en) 1965-06-16
FR1344220A (en) 1963-11-29
CH415872A (en) 1966-06-30
ES285347A1 (en) 1963-06-16
NL139841B (en) 1973-09-17
US3307063A (en) 1967-02-28
DE1194988C2 (en) 1976-01-15

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