GB691583A - Improvements in or relating to methods of making supply cathodes and supply cathodes manufactured by means of these methods - Google Patents

Improvements in or relating to methods of making supply cathodes and supply cathodes manufactured by means of these methods

Info

Publication number
GB691583A
GB691583A GB26770/51A GB2677051A GB691583A GB 691583 A GB691583 A GB 691583A GB 26770/51 A GB26770/51 A GB 26770/51A GB 2677051 A GB2677051 A GB 2677051A GB 691583 A GB691583 A GB 691583A
Authority
GB
United Kingdom
Prior art keywords
methods
supply cathodes
relating
cathodes
manufactured
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
GB26770/51A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB691583A publication Critical patent/GB691583A/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
    • H01J9/042—Manufacture, activation of the emissive part
    • H01J9/047—Cathodes having impregnated bodies

Landscapes

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

Abstract

A molybdenum casing forming part of an electron discharge tube cathode is pickled in a bath of three parts 70 per cent sulphuric acid, one part concentrated nitric and one part water, followed by rinsing, drying, and annealing in hyrodgen at 1100 DEG C.
GB26770/51A 1950-11-18 1951-11-15 Improvements in or relating to methods of making supply cathodes and supply cathodes manufactured by means of these methods Expired GB691583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL691583X 1950-11-18

Publications (1)

Publication Number Publication Date
GB691583A true GB691583A (en) 1953-05-13

Family

ID=19808176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26770/51A Expired GB691583A (en) 1950-11-18 1951-11-15 Improvements in or relating to methods of making supply cathodes and supply cathodes manufactured by means of these methods

Country Status (4)

Country Link
US (1) US2786259A (en)
BE (1) BE507171A (en)
FR (1) FR1045204A (en)
GB (1) GB691583A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188771B (en) * 1986-04-01 1990-12-19 Ceradyne Inc Dispenser cathode and method of manufacture therefor
DE102007038491B4 (en) * 2007-08-14 2010-08-12 Zf Friedrichshafen Ag Joint and / or bearing arrangement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1253906A (en) * 1916-10-28 1918-01-15 Jacob Sutter Soldering apparatus.
US2447038A (en) * 1945-10-31 1948-08-17 Raytheon Mfg Co Cathode structure
US2460738A (en) * 1946-04-17 1949-02-01 Gen Electric Electrode construction
US2542779A (en) * 1948-01-07 1951-02-20 Columbus Metal Products Inc Electropolishing composition and process
US2624024A (en) * 1949-10-26 1952-12-30 Hartford Nat Bank & Trust Co Cathode for use in electron discharge tubes
US2688709A (en) * 1949-11-12 1954-09-07 Westinghouse Electric Corp X-ray anode and method of making same by electric welding

Also Published As

Publication number Publication date
FR1045204A (en) 1953-11-24
US2786259A (en) 1957-03-26
BE507171A (en)

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