GB1436429A - Meshed cathode for electron tubes - Google Patents

Meshed cathode for electron tubes

Info

Publication number
GB1436429A
GB1436429A GB4160873A GB4160873A GB1436429A GB 1436429 A GB1436429 A GB 1436429A GB 4160873 A GB4160873 A GB 4160873A GB 4160873 A GB4160873 A GB 4160873A GB 1436429 A GB1436429 A GB 1436429A
Authority
GB
United Kingdom
Prior art keywords
parts
periphery
cathode
support
sept
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
GB4160873A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1436429A publication Critical patent/GB1436429A/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Microwave Tubes (AREA)

Abstract

1436429 Thermionic cathodes BBC BROWN BOVERI & CO Ltd 4 Sept 1973 [6 Sept 1972] 41608/73 Heading H1D A thermionie cathode comprises two aligned tubular parts 9, 9<SP>1</SP> each formed by winding two layers of wires 8 helically in opposite directions and a conducting support 5; the adjacent ends of the wires of the two parts being connected to the periphery of the support, the parts being angularly displaced so that there are alternate connections around the periphery to the cathode parts. The support is attached to a central current carrier 2 and its periphery comprises apertures 6 and recesses 7.
GB4160873A 1972-09-06 1973-09-04 Meshed cathode for electron tubes Expired GB1436429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1303172A CH549283A (en) 1972-09-06 1972-09-06 MESH CATHODE FOR ELECTRON TUBES.

Publications (1)

Publication Number Publication Date
GB1436429A true GB1436429A (en) 1976-05-19

Family

ID=4388683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4160873A Expired GB1436429A (en) 1972-09-06 1973-09-04 Meshed cathode for electron tubes

Country Status (6)

Country Link
US (1) US3875445A (en)
CH (1) CH549283A (en)
DE (1) DE2247364C2 (en)
FR (1) FR2198253B3 (en)
GB (1) GB1436429A (en)
NL (1) NL182184C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1042105A1 (en) * 1980-02-05 1983-09-15 Организация П/Я Х-5263 Grid-type filamentary cathode for vacuum tubes and its manufacture method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE863831C (en) * 1950-05-17 1953-01-19 Siemens Ag Cathode for electron tubes
DE1823411U (en) * 1958-07-01 1960-12-15 Siemens Ag CATHODE FOR ELECTRON TUBES.
GB987461A (en) * 1962-05-31 1965-03-31 Standard Telephones Cables Ltd Thermionic valves
FR1455956A (en) * 1965-07-20 1966-05-20 Thomson Houston Comp Francaise Direct heating cathode improvements
DE1901207A1 (en) * 1969-01-10 1970-08-06 Siemens Ag Mesh cathode for high-power electron tubes, especially transmission tubes
DE1901208A1 (en) * 1969-01-10 1970-07-30 Siemens Ag Tubular mesh cathode for high-power electron tubes, especially transmission tubes

Also Published As

Publication number Publication date
FR2198253A1 (en) 1974-03-29
DE2247364C2 (en) 1984-05-17
NL7312150A (en) 1974-03-08
NL182184B (en) 1987-08-17
DE2247364A1 (en) 1974-03-14
NL182184C (en) 1988-01-18
US3875445A (en) 1975-04-01
CH549283A (en) 1974-05-15
FR2198253B3 (en) 1976-08-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee