GB697581A - Improvements in cathode sleeves for electron tubes - Google Patents

Improvements in cathode sleeves for electron tubes

Info

Publication number
GB697581A
GB697581A GB28660/51A GB2866051A GB697581A GB 697581 A GB697581 A GB 697581A GB 28660/51 A GB28660/51 A GB 28660/51A GB 2866051 A GB2866051 A GB 2866051A GB 697581 A GB697581 A GB 697581A
Authority
GB
United Kingdom
Prior art keywords
sleeve
dec
electron tubes
cathode sleeves
embossment
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
GB28660/51A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB697581A publication Critical patent/GB697581A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26—Supports for the emissive material

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

697,581. Thermionic valves. RADIO CORPORATION OF AMERICA. Dec..' 6, 1951 [Dec. 8, 1950], No. 28660/51. Class 39(i) The sleeve of an indirectly heated cathode for an electron tube has a tapered end 12, Fig. 1. The wider opening thus obtained facilitates the insertion of the heater. Insertion of the sleeve into the centring hole 18 of a mica plate 16 is also facilitated, and enables a tighter fit to be obtained, reducing microphony effects. The pointed end 15 also forms a stiff integral tab for a lead connection. A locating embossment 19 is provided on the sleeve. In Fig. 5 the taper is formed by a helical edge to the sleeve. The sleeve is made by rolling up a suitably shaped piece of metal sheet, Figs. 4 (not shown) and 7 (not shown).
GB28660/51A 1950-12-08 1951-12-06 Improvements in cathode sleeves for electron tubes Expired GB697581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US199752A US2686889A (en) 1950-12-08 1950-12-08 Cathode sleeve

Publications (1)

Publication Number Publication Date
GB697581A true GB697581A (en) 1953-09-23

Family

ID=22738873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28660/51A Expired GB697581A (en) 1950-12-08 1951-12-06 Improvements in cathode sleeves for electron tubes

Country Status (6)

Country Link
US (1) US2686889A (en)
BE (1) BE507670A (en)
DE (1) DE886044C (en)
FR (1) FR1054093A (en)
GB (1) GB697581A (en)
NL (1) NL89871C (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612635A (en) * 1922-09-22 1926-12-28 Verona Tool Works Method of making rail bonds
US2001355A (en) * 1932-06-18 1935-05-14 Patent Button Co Die or anchor for tack buttons
US2029482A (en) * 1934-04-14 1936-02-04 Haslauer Adolf Cathode for thermionic valves
US2324177A (en) * 1942-01-01 1943-07-13 Rca Corp Cathode sleeve
US2536677A (en) * 1944-08-31 1951-01-02 Sylvania Electric Prod Base threading method and apparatus

Also Published As

Publication number Publication date
NL89871C (en)
DE886044C (en) 1953-08-10
US2686889A (en) 1954-08-17
FR1054093A (en) 1954-02-08
BE507670A (en)

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