GB277997A - - Google Patents

Info

Publication number
GB277997A
GB277997A GB25145/27A GB2514527A GB277997A GB 277997 A GB277997 A GB 277997A GB 25145/27 A GB25145/27 A GB 25145/27A GB 2514527 A GB2514527 A GB 2514527A GB 277997 A GB277997 A GB 277997A
Authority
GB
United Kingdom
Prior art keywords
oxides
electron
emitting
supporting
binding agent
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
GB25145/27A
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.)
AEG AG
Original Assignee
Allgemeine Elektricitaets Gesellschaft
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 Allgemeine Elektricitaets Gesellschaft filed Critical Allgemeine Elektricitaets Gesellschaft
Publication of GB277997A publication Critical patent/GB277997A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material

Abstract

277,997. Allgemeine Elektricitõts- Ges. Sept. 23, 1926, [Convention date]. Vacuum tubes.-A cathode comprises one or more alkaline earth or other electron emitting oxides supported solely by one or more oxides, for instance of niobium, tungsten, molybdenum, chromium or uranium, which do not volatilize or dissociate at the working temperature. The supporting oxide may be formed as a rod or tube bv pressing with a binding agent, extruding, and drawing off the binding agent by heating in a vacuum or inert gas, the electron-emitting oxides being deposited subsequently on the rod etc.; or a mixture of the supporting and emitting oxides may be used. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a cathode in which the supporting oxide is sprayed in suspension on a metal support, or the corresponding metal is coated on a metal support and oxidized, the electron-emitting oxides being deposited subsequently. This subject-matter does not appear in the Specification as accepted.
GB25145/27A 1926-09-24 1927-09-23 Expired GB277997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA48813D DE581423C (en) 1926-09-24 1926-09-24 Oxide cathode for discharge vessels

Publications (1)

Publication Number Publication Date
GB277997A true GB277997A (en) 1928-03-01

Family

ID=6936542

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25145/27A Expired GB277997A (en) 1926-09-24 1927-09-23

Country Status (2)

Country Link
DE (1) DE581423C (en)
GB (1) GB277997A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445257A (en) * 1944-07-03 1948-07-13 Gen Electric X Ray Corp Thermionic emitting device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971413C (en) * 1953-10-02 1959-01-22 Siemens Ag Device for crucible zone melting
FR2745951B1 (en) * 1996-03-05 1998-06-05 Thomson Csf THERMOIONIC CATHODE AND MANUFACTURING METHOD THEREOF

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445257A (en) * 1944-07-03 1948-07-13 Gen Electric X Ray Corp Thermionic emitting device

Also Published As

Publication number Publication date
DE581423C (en) 1933-07-27

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