FR797974A - Improvements to thermionic cathodes - Google Patents

Improvements to thermionic cathodes

Info

Publication number
FR797974A
FR797974A FR797974DA FR797974A FR 797974 A FR797974 A FR 797974A FR 797974D A FR797974D A FR 797974DA FR 797974 A FR797974 A FR 797974A
Authority
FR
France
Prior art keywords
thermionic cathodes
thermionic
cathodes
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
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR797974A publication Critical patent/FR797974A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • 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
FR797974D 1934-11-20 1935-11-19 Improvements to thermionic cathodes Expired FR797974A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US753875A US2107945A (en) 1934-11-20 1934-11-20 Cathode structure

Publications (1)

Publication Number Publication Date
FR797974A true FR797974A (en) 1936-05-07

Family

ID=25032529

Family Applications (1)

Application Number Title Priority Date Filing Date
FR797974D Expired FR797974A (en) 1934-11-20 1935-11-19 Improvements to thermionic cathodes

Country Status (2)

Country Link
US (1) US2107945A (en)
FR (1) FR797974A (en)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474211A (en) * 1939-07-07 1949-06-28 Int Standard Electric Corp Electron discharge device
BE443585A (en) * 1940-12-02
US2542656A (en) * 1941-01-31 1951-02-20 Hartford Nat Bank & Trust Co Indirectly heated cathode
US2542657A (en) * 1941-01-31 1951-02-20 Hartford Nat Bank & Trust Co Indirectly heated cathode
US2544104A (en) * 1941-04-01 1951-03-06 Radio Electr Soc Fr Electric discharge valve
NL59317C (en) * 1941-10-15 1946-06-15
US2416315A (en) * 1942-06-04 1947-02-25 Bell Telephone Labor Inc Electron discharge device
US2538873A (en) * 1942-11-14 1951-01-23 Hartford Nat Bank & Trust Co Electric discharge tube
FR915556A (en) * 1943-12-31 1946-11-12 Philips Nv Electric discharge tube
US2420014A (en) * 1944-04-18 1947-05-06 Eitel Mccullough Inc Cathode
BE460507A (en) * 1944-06-06
US2438899A (en) * 1944-06-26 1948-04-06 Standard Telephones Cables Ltd Electron discharge device
US2431020A (en) * 1944-09-11 1947-11-18 Jr Abraham Binneweg Assembly means for radio tubes
US2446270A (en) * 1945-05-21 1948-08-03 Eitel Mccullough Inc Electron tube
US2460575A (en) * 1945-05-21 1949-02-01 Raytheon Mfg Co Electron discharge device seal
US2508266A (en) * 1946-03-11 1950-05-16 Hartford Nat Bank & Trust Co Electric discharge tube
US2552045A (en) * 1946-09-11 1951-05-08 Rca Corp Cathode structure for magnetrons
US2455846A (en) * 1946-10-18 1948-12-07 Bell Telephone Labor Inc Coaxial leadin for electron discharge devices
US2492619A (en) * 1948-01-02 1949-12-27 Sylvania Electric Prod Electrical discharge tube
BE486753A (en) * 1948-01-15
US2549355A (en) * 1948-02-28 1951-04-17 Gen Electric Fluorescent lamp
US2675498A (en) * 1948-12-07 1954-04-13 Raytheon Mfg Co Cathode for electron discharge devices
US2534548A (en) * 1948-12-30 1950-12-19 Bell Telephone Labor Inc High-power water-cooled electron discharge device
US2624024A (en) * 1949-10-26 1952-12-30 Hartford Nat Bank & Trust Co Cathode for use in electron discharge tubes
US2647216A (en) * 1950-04-01 1953-07-28 Rca Corp Dispenser cathode
US2663822A (en) * 1950-11-04 1953-12-22 Hartford Nat Bank & Trust Co Ultrahigh-frequency electric discharge tube
US2640949A (en) * 1951-02-07 1953-06-02 Atomic Energy Commission Electron source
US2747120A (en) * 1951-06-05 1956-05-22 Gen Electric Single-ended thyratron discharge device
US2640950A (en) * 1951-06-06 1953-06-02 Atomic Energy Commission Point electron source
NL95281C (en) * 1952-04-09
US2777086A (en) * 1952-07-26 1957-01-08 Westinghouse Electric Corp Cathode
US2814754A (en) * 1952-08-28 1957-11-26 Raytheon Mfg Co Indirectly-heated cathodes
US2996637A (en) * 1953-02-26 1961-08-15 Rca Corp Electron tube construction
NL102367C (en) * 1955-03-08
US2941107A (en) * 1956-01-27 1960-06-14 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Flashtube
US3076913A (en) * 1959-09-10 1963-02-05 Tung Sol Electric Inc Cold cathode gas discharge device
GB931059A (en) * 1961-02-10 1963-07-10 Thorn Electrical Ind Ltd Improvements in and relating to thermionic cathodes
US3439210A (en) * 1966-01-03 1969-04-15 Hughes Aircraft Co Thermionic emission cathode having reduced frontal area and enlarged emission area for ion bombardment environment
US3421039A (en) * 1966-01-03 1969-01-07 Hughes Aircraft Co Thermionic cathode having emissive material and metallic paths which sputter away at the same rate
US3447015A (en) * 1967-02-24 1969-05-27 Nasa Ion thrustor cathode
GB1386251A (en) * 1971-03-24 1975-03-05 British Oxygen Co Ltd Source of sublimable material
NL8200903A (en) * 1982-03-05 1983-10-03 Philips Nv METHOD FOR DRILLING A SUPPLY CATHOD.
AU2002221136A1 (en) * 2000-12-13 2002-06-24 Hamamatsu Photonics K.K. Indirectly heated electrode for gas discharge tube, gas discharge tube with this, and its operating device
EP1351275A4 (en) * 2000-12-13 2008-01-09 Hamamatsu Photonics Kk Indirectly heated electrode for gas discharge tube
US9504946B2 (en) 2006-12-14 2016-11-29 Mycelx Technologies Corporation Process and system for separating finely aerosolized elemental mercury from gaseous streams
US7981298B2 (en) * 2006-12-14 2011-07-19 Hal Alper Process for removal of contaminants from industrial streams
US8105423B2 (en) * 2006-12-14 2012-01-31 Hal Alper Process and system for separating finely aerosolized elemental mercury from gaseous streams
AU2010307347B2 (en) 2009-08-28 2014-05-29 Hal Alper Method and system for analyzing concentrations of diverse mercury species present in a fluid medium

Also Published As

Publication number Publication date
US2107945A (en) 1938-02-08

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