GB1267074A - - Google Patents

Info

Publication number
GB1267074A
GB1267074A GB1267074DA GB1267074A GB 1267074 A GB1267074 A GB 1267074A GB 1267074D A GB1267074D A GB 1267074DA GB 1267074 A GB1267074 A GB 1267074A
Authority
GB
United Kingdom
Prior art keywords
sleeve
cathode
emission member
end portion
moulding
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
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 filed Critical
Publication of GB1267074A publication Critical patent/GB1267074A/en
Expired legal-status Critical Current

Links

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

Abstract

1,267,074. Moulding dispenser cathodes. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 2 May, 1969 [4 May, 1968], No. 22597/69. Heading B5A. [Also in Divisions C7 and H1] A dispenser cathode comprises a pre-formed cathode sleeve 2 e.g. of molybdenum, containing a porous sintered emission member 7 which has been compression moulded within the sleeve 2 from powdered material e.g. tungsten, and sintered subsequent to the moulding operation. A cylindrical cathode sleeve 2, having a recessed end portion formed with a double side wall by a pressing or drawing operation, is located over a bottom die 6 and the emission member 7 is then moulded within and above the recessed end portion from powder which is compressed by an upper plunger 5, the double wall being thereby deformed whereby the emission member is anchored to the cathode sleeve. The moulding is ejected by the upper plunger 5. A heater, whereby the cathode is heated to provide an emission, is located in the sleeve below the recessed end portion so that it is hermetically sealed from the sintered emission member.
GB1267074D 1968-05-04 1969-05-02 Expired GB1267074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681764260 DE1764260A1 (en) 1968-05-04 1968-05-04 Method for manufacturing a supply cathode

Publications (1)

Publication Number Publication Date
GB1267074A true GB1267074A (en) 1972-03-15

Family

ID=5697917

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1267074D Expired GB1267074A (en) 1968-05-04 1969-05-02

Country Status (4)

Country Link
US (1) US3623198A (en)
DE (1) DE1764260A1 (en)
FR (1) FR2007841A1 (en)
GB (1) GB1267074A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7608642A (en) * 1976-08-04 1978-02-07 Philips Nv PROCESS FOR MANUFACTURE OF A STOCK CATHOD AND STOCK CATHOD MANUFACTURED UNDER THAT PROCESS.
US4710344A (en) * 1983-10-07 1987-12-01 Union Carbide Corporation Method of forming a getter assembly
DE3600480A1 (en) * 1986-01-10 1987-07-16 Licentia Gmbh METHOD FOR PRODUCING A POROUS PRESSURE
NL8700935A (en) * 1987-04-21 1988-11-16 Philips Nv IMPREGNATED CATHODES WITH A CHECKED POROSITY.
KR930007461B1 (en) * 1991-04-23 1993-08-11 주식회사 금성사 Method of making a dispenser type cathode
JP3696720B2 (en) 1997-07-09 2005-09-21 松下電器産業株式会社 Impregnated cathode and manufacturing method thereof
JPH11102636A (en) 1997-09-26 1999-04-13 Matsushita Electron Corp Cathode, manufacture of cathode and image receiving tube

Also Published As

Publication number Publication date
FR2007841A1 (en) 1970-01-16
US3623198A (en) 1971-11-30
DE1764260A1 (en) 1971-07-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees