GB1183278A - Improvements in or relating to Mesh-Type Cathodes for Electric Discharge Tubes - Google Patents

Improvements in or relating to Mesh-Type Cathodes for Electric Discharge Tubes

Info

Publication number
GB1183278A
GB1183278A GB4246968A GB4246968A GB1183278A GB 1183278 A GB1183278 A GB 1183278A GB 4246968 A GB4246968 A GB 4246968A GB 4246968 A GB4246968 A GB 4246968A GB 1183278 A GB1183278 A GB 1183278A
Authority
GB
United Kingdom
Prior art keywords
mesh
arms
cathode
cap
relating
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
GB4246968A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1183278A publication Critical patent/GB1183278A/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

  • Electrolytic Production Of Metals (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1,183,278. Thermionic-cathode tubes. SIEMENS A.G. 6 Sept., 1968 [8 Sept., 1967], No. 42469/68. Heading H1D. In a mesh-type cathode comprising a tubular mesh-grid of cathode wire 1 which is attached at one end to an annular heater conductor 3 and at the other end, through a cap 4 having regularly disposed sprung arms, to a coaxial support pillar 5 forming the second heater conductor, the cap 4 is formed of a number of star-washers 6, see Fig. 5, superposed one upon another with their arms staggered, Fig. 4 (not shown). The ends of the arms 7 may be bent up at right-angles at the edge of the cup 4 where they are of such width that they just fail to overlap one another, and preferably the total number of arms in the cap is equal to the number of points of intersection of the cathode wires around the periphery of the mesh-grid. A part washer (10), Fig. 7 (not shown), may be used to make up the number of arms required. Adjacent star-washers may be separated from each other by a plain washer. In the mesh cathode at all the points of intersection the pairs of wires may be welded together.
GB4246968A 1967-09-08 1968-09-06 Improvements in or relating to Mesh-Type Cathodes for Electric Discharge Tubes Expired GB1183278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1967S0111729 DE1278024B (en) 1967-09-08 1967-09-08 Mesh cathode for high-power electron tubes, especially transmission tubes

Publications (1)

Publication Number Publication Date
GB1183278A true GB1183278A (en) 1970-03-04

Family

ID=7531182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4246968A Expired GB1183278A (en) 1967-09-08 1968-09-06 Improvements in or relating to Mesh-Type Cathodes for Electric Discharge Tubes

Country Status (4)

Country Link
DE (1) DE1278024B (en)
FR (1) FR1582286A (en)
GB (1) GB1183278A (en)
NL (1) NL139411B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532468A1 (en) * 1982-08-31 1984-03-02 Thomson Csf IMPROVEMENT TO CATHODES WITH DIRECT HEATING

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839235C (en) * 1950-08-20 1952-05-19 Siemens Ag Electron tubes, in particular transmitter tubes
GB987461A (en) * 1962-05-31 1965-03-31 Standard Telephones Cables Ltd Thermionic valves

Also Published As

Publication number Publication date
DE1278024B (en) 1968-09-19
NL139411B (en) 1973-07-16
NL6810304A (en) 1969-03-11
FR1582286A (en) 1969-09-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee