BE517981A - - Google Patents

Info

Publication number: BE517981A
Authority: BE; Belgium

Application number

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.)

1952-02-27

Publication of BE517981A publication Critical patent/BE517981A/xx

Classifications

- 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
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
- H01J9/047—Cathodes having impregnated bodies
- 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
- H01J1/14—Solid thermionic cathodes characterised by the material
- 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

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Powder Metallurgy (AREA)
Solid Thermionic Cathode (AREA)
Discharge Lamp (AREA)

BE517981D 1952-02-27 BE517981A (sl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US273607A US2700000A (en)	1952-02-27	1952-02-27	Thermionic cathode and method of manufacturing same

Publications (1)

Publication Number	Publication Date
BE517981A true BE517981A (sl)

Family

ID=23044673

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE517981D BE517981A (sl)	1952-02-27

Country Status (9)

Country	Link
US (1)	US2700000A (sl)
BE (1)	BE517981A (sl)
CH (1)	CH318053A (sl)
DE (1)	DE1089483B (sl)
ES (2)	ES207960A1 (sl)
FR (1)	FR1077589A (sl)
GB (1)	GB734311A (sl)
IT (1)	IT500079A (sl)
NL (1)	NL96177C (sl)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE548876A (sl) *	1953-08-14
BE533455A (sl) *	1953-11-18
US2813807A (en) *	1954-07-19	1957-11-19	Philips Corp	Method of making a dispenser cathode
US3041209A (en) *	1955-06-28	1962-06-26	Gen Electric	Method of making a thermionic cathode
BE559450A (sl) *	1956-07-24
BE561832A (sl) *	1956-10-24
BE563664A (sl) *	1957-01-03
US3075066A (en) *	1957-12-03	1963-01-22	Union Carbide Corp	Article of manufacture and method of making same
US2975320A (en) *	1958-12-03	1961-03-14	Rca Corp	Low-temperature plasma source
US3076916A (en) *	1959-01-21	1963-02-05	Semicon Associates Inc	Impregnated tungsten cathode structures and methods for fabricating same
US2995674A (en) *	1959-02-27	1961-08-08	Raytheon Co	Impregnated cathodes
US3155864A (en) *	1960-03-21	1964-11-03	Gen Electric	Dispenser cathode
NL266639A (sl) *	1960-07-05
US3160780A (en) *	1961-01-17	1964-12-08	Philips Corp	Indirectly heated cathode
US3258636A (en) *	1961-09-01	1966-06-28		Electron emitter with activator of sill cide, boride or carbide of solid solu- tion of barium and at least one other alkaline earth metal
NL6515843A (sl) *	1965-12-07	1967-06-08
NL6602973A (sl) *	1966-03-08	1967-09-11
US3514324A (en) *	1967-05-01	1970-05-26	Kopco Ind	Tungsten coating of dispenser cathode
US3538570A (en) *	1968-02-28	1970-11-10	Otto G Koppius	Thermionic dispenser cathode
US4097762A (en) *	1975-08-14	1978-06-27	International Telephone & Telegraph Corporation	Xenon arc discharge lamp having a particular electrode composition and wherein the arc discharge is obtained without heating the electrode
US4636749A (en) *	1979-08-13	1987-01-13	Brunswick Corporation	Pulsed magnetron tube having improved electron emitter assembly
US4377505A (en) *	1980-12-29	1983-03-22	General Electric Company	Electrical resistor and fabrication thereof
FR2514945A1 (fr) *	1981-10-20	1983-04-22	Thomson Csf	Cathode a chauffage indirect et tube electronique, a rayons cathodiques notamment, muni d'une telle cathode
JPS61500290A (ja) *	1983-11-02	1986-02-20	ブランズウイツク　コ−ポレ−シヨン	無線周波電源装置のための同調装置
US4675570A (en) *	1984-04-02	1987-06-23	Varian Associates, Inc.	Tungsten-iridium impregnated cathode
US5418070A (en) *	1988-04-28	1995-05-23	Varian Associates, Inc.	Tri-layer impregnated cathode
KR920003185B1 (ko) *	1990-01-31	1992-04-23	삼성전관 주식회사	디스펜서형 음극 및 그 제조방법
JP2985467B2 (ja) *	1992-01-22	1999-11-29	三菱電機株式会社	含浸型カソードの製造方法
DE19652822A1 (de) *	1996-12-18	1998-06-25	Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh	Sinterelektrode
US20090284124A1 (en) *	2008-04-22	2009-11-19	Wolfgang Kutschera	Cathode composed of materials with different electron works functions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL15389C (sl) *	1923-01-12
CH159791A (de) *	1931-02-14	1933-01-31	Aeg	Glühkathode für elektrische Entladungsgefässe.
US2389060A (en) *	1943-08-13	1945-11-13	Callite Tungsten Corp	Refractory body of high electronic emission
US2547869A (en) *	1947-10-31	1951-04-03	Sylvania Electric Prod	Fluorescent lamp electrode

0
- NL NL96177D patent/NL96177C/xx active
- BE BE517981D patent/BE517981A/xx unknown
- IT IT500079D patent/IT500079A/it unknown
1952
- 1952-02-27 US US273607A patent/US2700000A/en not_active Expired - Lifetime
1953
- 1953-02-24 ES ES0207960A patent/ES207960A1/es not_active Expired
- 1953-02-25 CH CH318053D patent/CH318053A/de unknown
- 1953-02-25 GB GB5269/53A patent/GB734311A/en not_active Expired
- 1953-02-25 DE DEN6805A patent/DE1089483B/de active Pending
- 1953-02-25 FR FR1077589D patent/FR1077589A/fr not_active Expired
- 1953-06-01 ES ES0209589A patent/ES209589A1/es not_active Expired

Also Published As

Publication number	Publication date
ES207960A1 (es)	1953-07-16
DE1089483B (de)	1960-09-22
IT500079A (sl)
US2700000A (en)	1955-01-18
CH318053A (de)	1956-12-15
NL96177C (sl)
GB734311A (en)	1955-07-27
ES209589A1 (es)	1953-07-16
FR1077589A (fr)	1954-11-09

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