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GB397132A - Improvements in oxide coated thermionic cathodes - Google Patents

Improvements in oxide coated thermionic cathodes

Info

Publication number
GB397132A
GB397132A GB4585/32A GB458532A GB397132A GB 397132 A GB397132 A GB 397132A GB 4585/32 A GB4585/32 A GB 4585/32A GB 458532 A GB458532 A GB 458532A GB 397132 A GB397132 A GB 397132A
Authority
GB
United Kingdom
Prior art keywords
titanium
core
oxide coated
thermionic cathodes
aluminium
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
GB4585/32A
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.)
Mi O Valve Co Ltd
Original Assignee
Mi O Valve Co Ltd
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
Priority to BE394417D priority Critical patent/BE394417A/xx
Application filed by Mi O Valve Co Ltd filed Critical Mi O Valve Co Ltd
Priority to GB4585/32A priority patent/GB397132A/en
Priority to FR750898D priority patent/FR750898A/en
Publication of GB397132A publication Critical patent/GB397132A/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

Landscapes

  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

A core for an oxide-coated thermionic cathode contains titanium or aluminium, or both, in a proportion of not more than 5 per cent, the core, when aluminium is present, containing not substantially less than 2 per cent thereof. The main constituent of the core is nickel, nickel alloys, iron, or platinum. Titanium may be introduced in the form of ferro-titanium, the final alloy containing iron and titanium. Specifications 274,027, [Class 39 (i), Electric lamps, Arc &c.], 279,890, 330,280, and 334,460, [all in Class 82 (i), Metals, Extracting &c.], are referred to.
GB4585/32A 1932-02-16 1932-02-16 Improvements in oxide coated thermionic cathodes Expired GB397132A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE394417D BE394417A (en) 1932-02-16
GB4585/32A GB397132A (en) 1932-02-16 1932-02-16 Improvements in oxide coated thermionic cathodes
FR750898D FR750898A (en) 1932-02-16 1933-02-16 Thermionic cathodes, oxide coated

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4585/32A GB397132A (en) 1932-02-16 1932-02-16 Improvements in oxide coated thermionic cathodes

Publications (1)

Publication Number Publication Date
GB397132A true GB397132A (en) 1933-08-16

Family

ID=9779939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4585/32A Expired GB397132A (en) 1932-02-16 1932-02-16 Improvements in oxide coated thermionic cathodes

Country Status (3)

Country Link
BE (1) BE394417A (en)
FR (1) FR750898A (en)
GB (1) GB397132A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE889812C (en) * 1941-03-14 1953-09-14 Telefunken Gmbh Incandescent cathode for electric discharge tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE889812C (en) * 1941-03-14 1953-09-14 Telefunken Gmbh Incandescent cathode for electric discharge tubes

Also Published As

Publication number Publication date
FR750898A (en) 1933-08-21
BE394417A (en)

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