CH242721A - Elektronenröhre mit einer Sekundäremissionselektrode. - Google Patents

Elektronenröhre mit einer Sekundäremissionselektrode.

Info

Publication number: CH242721A
Authority: CH; Switzerland
Prior art keywords: electron tube; emission electrode; secondary emission; electrode; electron
Prior art date: 1941-07-03

Application number

Other languages

English (en)

Inventor

Gloeilampenfabrieken N Philips

Original Assignee

Philips 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.)

1941-07-03

Filing date

1942-07-01

Publication date

1946-05-31

1942-07-01 Application filed by Philips Nv filed Critical Philips Nv

1946-05-31 Publication of CH242721A publication Critical patent/CH242721A/de

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
- H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
- H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/183—Composition or manufacture of getters
- 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
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/32—Secondary emission electrodes
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9335—Product by special process
- Y10S428/938—Vapor deposition or gas diffusion
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12063—Nonparticulate metal component
- Y10T428/12069—Plural nonparticulate metal components
- Y10T428/12076—Next to each other
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12063—Nonparticulate metal component
- Y10T428/12097—Nonparticulate component encloses particles
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12778—Alternative base metals from diverse categories

Landscapes

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

CH242721D 1941-07-03 1942-07-01 Elektronenröhre mit einer Sekundäremissionselektrode. CH242721A (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL242721X		1941-07-03

Publications (1)

Publication Number	Publication Date
CH242721A true CH242721A (de)	1946-05-31

Family

ID=19780661

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH242721D CH242721A (de)	1941-07-03	1942-07-01	Elektronenröhre mit einer Sekundäremissionselektrode.

Country Status (6)

Country	Link
US (1)	US2472189A (de)
BE (1)	BE446289A (de)
CH (1)	CH242721A (de)
FR (1)	FR883717A (de)
GB (1)	GB613946A (de)
NL (1)	NL59008C (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2858470A (en) *	1955-02-02	1958-10-28	Bell Telephone Labor Inc	Cathode for electron discharge devices
US3041209A (en) *	1955-06-28	1962-06-26	Gen Electric	Method of making a thermionic cathode
US2996795A (en) *	1955-06-28	1961-08-22	Gen Electric	Thermionic cathodes and methods of making
BE638686A (de) *	1962-10-17
US3376461A (en) *	1964-12-28	1968-04-02	Varian Associates	Thermionic cathodes and high frequency electron discharge devices
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE419911A (de) *	1936-02-10
US2123024A (en) *	1936-05-29	1938-07-05	Rca Corp	Electrode for electric discharge devices
BE427143A (de) *	1937-03-25
NL50264C (de) *	1937-04-02
US2171227A (en) *	1937-08-09	1939-08-29	Philips Nv	Secondary electron emitter and method of making it
US2204252A (en) *	1938-07-28	1940-06-11	Fides Gmbh	Secondary electron emitter and method of making it

0
- BE BE446289D patent/BE446289A/xx unknown
- NL NL59008D patent/NL59008C/xx active
1942
- 1942-07-01 CH CH242721D patent/CH242721A/de unknown
- 1942-07-01 FR FR883717D patent/FR883717A/fr not_active Expired
1943
- 1943-03-22 US US480102A patent/US2472189A/en not_active Expired - Lifetime
1946
- 1946-03-09 GB GB7441/46A patent/GB613946A/en not_active Expired

Also Published As

Publication number	Publication date
NL59008C (de)
FR883717A (fr)	1943-07-13
BE446289A (de)
US2472189A (en)	1949-06-07
GB613946A (en)	1948-12-07

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