FR51138E - Perfectionnements aux dispositifs thermioniques à décharge - Google Patents

Perfectionnements aux dispositifs thermioniques à décharge

Info

Publication number: FR51138E
Authority: FR; France
Prior art keywords: discharge devices; thermionic discharge; thermionic; devices; discharge
Prior art date: 1938-11-30
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.)

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.)

1938-11-30

Filing date

1940-03-11

Publication date

1941-08-08

1940-03-11 Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA

1941-08-08 Application granted granted Critical

1941-08-08 Publication of FR51138E publication Critical patent/FR51138E/fr

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
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/16—Cathodes heated directly by an electric current characterised by the shape
- 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
- 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
- H01J17/063—Indirectly heated cathodes, e.g. by the discharge itself

FR51138D 1938-11-30 1940-03-11 Perfectionnements aux dispositifs thermioniques à décharge Expired FR51138E (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
US243101A US2201731A (en)	1938-11-30	1938-11-30	Discharge tube electrode assembly
US261395A US2201720A (en)	1938-11-30	1939-03-11	Thermionic cathode structure
US266803A US2246176A (en)	1938-11-30	1939-04-08	Thermionic discharge device
US283803A US2201721A (en)	1938-11-30	1939-07-11	Thermionic cathode structure

Publications (1)

Publication Number	Publication Date
FR51138E true FR51138E (fr)	1941-08-08

Family

ID=42358497

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
FR861969D Expired FR861969A (fr)	1938-11-30	1939-11-30	Perfectionnements aux dispositifs thermioniques à décharge
FR51138D Expired FR51138E (fr)	1938-11-30	1940-03-11	Perfectionnements aux dispositifs thermioniques à décharge

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
FR861969D Expired FR861969A (fr)	1938-11-30	1939-11-30	Perfectionnements aux dispositifs thermioniques à décharge

Country Status (5)

Country	Link
US (4)	US2201731A (fr)
BE (1)	BE438749A (fr)
FR (2)	FR861969A (fr)
GB (2)	GB536070A (fr)
NL (1)	NL55022C (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE477491A (fr) *	1943-05-28
US2456649A (en) *	1943-06-12	1948-12-21	Glenn F Rouse	Cathode
US2675498A (en) *	1948-12-07	1954-04-13	Raytheon Mfg Co	Cathode for electron discharge devices
US2605432A (en) *	1949-10-19	1952-07-29	Electrons Inc	Indirectly heated cathode structure
US2647216A (en) *	1950-04-01	1953-07-28	Rca Corp	Dispenser cathode
US2610305A (en) *	1951-01-05	1952-09-09	Chatham Electronics Corp	Control electrode for discharge tubes
DE962188C (de) *	1951-10-12	1957-04-18	Philips Nv	Elektrische Entladungsroehre mit Quecksilberkathode und Gasfuellung
DE1018164B (de) *	1952-12-04	1957-10-24	Siemens Ag	Gasentladungsroehre
GB931059A (en) *	1961-02-10	1963-07-10	Thorn Electrical Ind Ltd	Improvements in and relating to thermionic cathodes
NL141698B (nl) *	1964-12-10	1974-03-15	Philips Nv	Indirect verhitte kathode voor een elektrische ontladingsbuis.
GB1204316A (en) *	1966-09-26	1970-09-03	Atomic Energy Authority Uk	Improvements in or relating to electron emitting cathodes for irradiation machines
US3534218A (en) *	1967-03-30	1970-10-13	Atomic Energy Authority Uk	Electron emitting cathodes for irradiation machines
US4611147A (en) *	1984-04-05	1986-09-09	The United States Of America As Represented By The United States Department Of Energy	Thermionic gas switch

1938
- 1938-11-30 US US243101A patent/US2201731A/en not_active Expired - Lifetime
1939
- 1939-03-11 US US261395A patent/US2201720A/en not_active Expired - Lifetime
- 1939-04-08 US US266803A patent/US2246176A/en not_active Expired - Lifetime
- 1939-07-11 US US283803A patent/US2201721A/en not_active Expired - Lifetime
- 1939-11-30 FR FR861969D patent/FR861969A/fr not_active Expired
- 1939-11-30 NL NL96091A patent/NL55022C/xx active
- 1939-11-30 GB GB31133/39A patent/GB536070A/en not_active Expired
1940
- 1940-03-11 FR FR51138D patent/FR51138E/fr not_active Expired
- 1940-07-09 GB GB11440/40A patent/GB542495A/en not_active Expired
- 1940-09-21 BE BE438749D patent/BE438749A/xx unknown

Also Published As

Publication number	Publication date
US2246176A (en)	1941-06-17
FR861969A (fr)	1941-02-22
NL55022C (fr)	1943-08-16
US2201731A (en)	1940-05-21
US2201721A (en)	1940-05-21
BE438749A (fr)	1940-10-31
GB536070A (en)	1941-05-01
GB542495A (en)	1942-01-12
US2201720A (en)	1940-05-21

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