GB725719A - Improvements in and relating to cathodes for electric discharge devices - Google Patents

Improvements in and relating to cathodes for electric discharge devices

Info

Publication number
GB725719A
GB725719A GB8242/53A GB824253A GB725719A GB 725719 A GB725719 A GB 725719A GB 8242/53 A GB8242/53 A GB 8242/53A GB 824253 A GB824253 A GB 824253A GB 725719 A GB725719 A GB 725719A
Authority
GB
United Kingdom
Prior art keywords
cathode
thoria
sleeve
heated
heater
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
GB8242/53A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB725719A publication Critical patent/GB725719A/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
    • H01J1/26—Supports for the emissive material

Landscapes

  • Solid Thermionic Cathode (AREA)
GB8242/53A 1952-04-01 1953-03-25 Improvements in and relating to cathodes for electric discharge devices Expired GB725719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US279888A US2723363A (en) 1952-04-01 1952-04-01 Cathode and method of producing same

Publications (1)

Publication Number Publication Date
GB725719A true GB725719A (en) 1955-03-09

Family

ID=23070780

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8242/53A Expired GB725719A (en) 1952-04-01 1953-03-25 Improvements in and relating to cathodes for electric discharge devices

Country Status (5)

Country Link
US (1) US2723363A (sv)
BE (1) BE518861A (sv)
DE (1) DE967715C (sv)
FR (1) FR1073802A (sv)
GB (1) GB725719A (sv)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768321A (en) * 1955-05-02 1956-10-23 Rca Corp Indirectly heated electron emitter for power tubes and the like
BE571711A (sv) * 1957-10-04
US3034479A (en) * 1957-10-17 1962-05-15 Larsh Apparatus for flow coating the slots of a slotted stator
DE1080700B (de) * 1958-05-17 1960-04-28 Deutsche Elektronik Gmbh Verfahren zur Herstellung einer indirekt geheizten Kathode, insbesondere fuer Magnetrons hoher Schwingleistung, und nach diesem Verfahren hergestellte Kathode
NL272248A (sv) * 1960-12-15
GB1004776A (en) * 1961-03-15 1965-09-15 Gen Electric Improvements in cathode construction
DE1133835B (de) * 1961-12-16 1962-07-26 Telefunken Patent Verfahren zur Herstellung einer mittelbar geheizten Kathode fuer eine elektrische Entladungsroehre
US3475161A (en) * 1967-03-14 1969-10-28 Howmet Corp Method of forming cemented carbide coatings on metal surfaces by employing volatile,organic liquid solvents and organic binders
US3958146A (en) * 1974-02-08 1976-05-18 Gte Sylvania Incorporated Fast warm up picture tube cathode cap having high heat emissivity surface on the interior thereof
US3881126A (en) * 1974-03-06 1975-04-29 Gte Sylvania Inc Fast warm-up cathode assembly
US4569198A (en) * 1983-03-11 1986-02-11 Technion, Incorporated Heater/emitter assembly
USRE32918E (en) * 1983-03-11 1989-05-09 Technion, Inc. Heater/emitter assembly
US4730449A (en) * 1983-07-26 1988-03-15 Technion, Inc. Radiation transfer thrusters for low thrust applications
DE19828158C1 (de) * 1998-06-24 1999-11-25 Siemens Ag Indirekt geheizte Kathode, insbesondere für Röntgenröhren

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1886705A (en) * 1926-02-06 1932-11-08 Arsene N Lucian Indirect electron excitation for thermionic vacuum tubes
US2115828A (en) * 1935-04-13 1938-05-03 Bell Telephone Labor Inc Electron emitting cathode and method of preparation
DE710283C (de) * 1936-10-03 1941-09-09 Aeg UEberzug von Tantalkarbid auf nicht zur Emission dienende Elektroden elektrischer Entladungsgefaesse und Verfahren zu seiner Aufbringung
DE715156C (de) * 1937-07-23 1941-12-16 Aeg Verfahren zum Aufbringen eines UEberzuges von Zirkon- und/oder Niobcarbid oder eines UEberzuges aus einer Beimengung dieser Carbide zu Tantalcarbid auf nicht zur Emission dienende Elektroden
US2284655A (en) * 1939-10-26 1942-06-02 Lorenz C Ag Electric discharge tube
NL54775C (sv) * 1940-01-24
NL65083C (sv) * 1942-02-06
US2438732A (en) * 1947-03-15 1948-03-30 Eitel Mcculough Inc Electron tube cathode

Also Published As

Publication number Publication date
FR1073802A (fr) 1954-09-29
DE967715C (de) 1957-12-05
US2723363A (en) 1955-11-08
BE518861A (sv)

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