FR1173168A - Reserve cathode and discharge tube provided with such a cathode - Google Patents

Reserve cathode and discharge tube provided with such a cathode

Info

Publication number: FR1173168A
Authority: FR; France
Prior art keywords: cathode; discharge tube; reserve; tube provided; reserve cathode
Prior art date: 1955-08-15
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

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.)

Koninklijke Philips NV

Original Assignee

Philips Gloeilampenfabrieken NV

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.)

1955-08-15

Filing date

1956-08-14

Publication date

1959-02-20

1956-08-14 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1959-02-20 Application granted granted Critical

1959-02-20 Publication of FR1173168A publication Critical patent/FR1173168A/en

Status Expired legal-status Critical Current

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

FR1173168D 1955-08-15 1956-08-14 Reserve cathode and discharge tube provided with such a cathode Expired FR1173168A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US528296A US2864028A (en)	1955-08-15	1955-08-15	Thermionic dispenser cathode

Publications (1)

Publication Number	Publication Date
FR1173168A true FR1173168A (en)	1959-02-20

Family

ID=24105076

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1173168D Expired FR1173168A (en)	1955-08-15	1956-08-14	Reserve cathode and discharge tube provided with such a cathode

Country Status (6)

Country	Link
US (1)	US2864028A (en)
BE (1)	BE550302A (en)
CH (1)	CH344139A (en)
DE (1)	DE1047321B (en)
FR (1)	FR1173168A (en)
GB (1)	GB800219A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1180435B (en) *	1958-12-12	1964-10-29	Varta Ag	Continuous process for the production of sintered frameworks for foil electrodes, in particular strip electrodes, for electric accumulators
US3113236A (en) *	1959-06-23	1963-12-03	Philips Corp	Oxide dispenser type 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
US3594885A (en) *	1969-06-16	1971-07-27	Varian Associates	Method for fabricating a dimpled concave dispenser cathode incorporating a grid
GB1582837A (en) *	1976-07-10	1981-01-14	Emi Varian Ltd	Electron emitter
US4101800A (en) *	1977-07-06	1978-07-18	The United States Of America As Represented By The Secretary Of The Navy	Controlled-porosity dispenser cathode
GB2100502B (en) *	1978-11-30	1983-08-03	Varian Associates	Dispenser cathodes
FR2469792A1 (en) *	1979-11-09	1981-05-22	Thomson Csf	THERMO-IONIC CATHODE, ITS MANUFACTURING METHOD, AND ELECTRONIC TUBE INCORPORATING SUCH A CATHODE
WO1984001664A1 (en) *	1982-10-12	1984-04-26	Hughes Aircraft Co	Controlled porosity dispenser cathode
DE3913338C2 (en) *	1989-04-22	1999-12-02	Aeg Elektronische Roehren Gmbh	Investment material, in particular for cathodes of electron tubes, method for producing such an investment material and use of such an investment material
FR2647952A1 (en) *	1989-05-30	1990-12-07	Thomson Tubes Electroniques	IMPREGNATED THERMOELECTRONIC CATHODE FOR ELECTRONIC TUBE
JPH11339633A (en) *	1997-11-04	1999-12-10	Sony Corp	Impregnated cathode, method of manufacturing the same, electron gun and electron tube

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2121589A (en) *	1934-06-28	1938-06-21	Westinghouse Electric & Mfg Co	Emissive incandescent cathode
GB450035A (en) *	1935-05-07	1936-07-09	Ets Claude Paz & Silva	Improvements in electrodes for high-pressure metallic vapour electric discharge tubes
US2452075A (en) *	1941-12-18	1948-10-26	Raytheon Mfg Co	Velocity modulation electron discharge tube
DE879872C (en) *	1942-08-19	1953-06-15	Siemens Ag	Cathode for generating an electron beam
US2459841A (en) *	1943-06-08	1949-01-25	Glenn F Rouse	Cathode
US2647216A (en) *	1950-04-01	1953-07-28	Rca Corp	Dispenser cathode
DE895479C (en) *	1951-11-20	1953-11-02	Siemens Ag	Cathode for electrical discharge vessels
NL83577C (en) *	1952-07-23

0
- BE BE550302D patent/BE550302A/xx unknown
1955
- 1955-08-15 US US528296A patent/US2864028A/en not_active Expired - Lifetime
1956
- 1956-08-10 GB GB24558/56A patent/GB800219A/en not_active Expired
- 1956-08-11 DE DEN12600A patent/DE1047321B/en active Pending
- 1956-08-13 CH CH344139D patent/CH344139A/en unknown
- 1956-08-14 FR FR1173168D patent/FR1173168A/en not_active Expired

Also Published As

Publication number	Publication date
GB800219A (en)	1958-08-20
BE550302A (en)
US2864028A (en)	1958-12-09
DE1047321B (en)	1958-12-24
CH344139A (en)	1960-01-31

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