GB406905A - Improvements in or relating to electron emitting cathodes suitable for use in electron discharge devices - Google Patents

Improvements in or relating to electron emitting cathodes suitable for use in electron discharge devices

Info

Publication number
GB406905A
GB406905A GB18319/33A GB1831933A GB406905A GB 406905 A GB406905 A GB 406905A GB 18319/33 A GB18319/33 A GB 18319/33A GB 1831933 A GB1831933 A GB 1831933A GB 406905 A GB406905 A GB 406905A
Authority
GB
United Kingdom
Prior art keywords
oxide
gauze
cathode
electron
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
GB18319/33A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB406905A publication Critical patent/GB406905A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/027—Construction of the gun or parts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

406,905. Thermionic cathodes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. June 27, 1933, No. 18319. Convention date, June 27, 1932. [Class 39 (i).] Metallic oxide for a thermionic cathode is enclosed in a metal container having not less than 49 perforations per square millimeter, e.g. nickel wire gauze. Fig. 2 shows an indirectly heated cathode having a heating filament 1 enclosed in insulation 4 and a metal tube 5, outside which are the oxide 2 and metal gauze 3. Fig. 3 shows a cathode with a small emissive area for Braun tubes &c. comprising a body 7 of pencil shape enclosing a heater 6 and having a mass of oxide 2 at its end covered with gauze 3 of 81 meshes per square millimeter.
GB18319/33A 1932-06-27 1933-06-27 Improvements in or relating to electron emitting cathodes suitable for use in electron discharge devices Expired GB406905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE406905X 1932-06-27

Publications (1)

Publication Number Publication Date
GB406905A true GB406905A (en) 1934-03-08

Family

ID=6422112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18319/33A Expired GB406905A (en) 1932-06-27 1933-06-27 Improvements in or relating to electron emitting cathodes suitable for use in electron discharge devices

Country Status (2)

Country Link
FR (1) FR406905A (en)
GB (1) GB406905A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD242326A3 (en) * 1983-05-27 1987-01-28 Reiner Kinder PROCESS FOR THE PRODUCTION OF HYDROPHOBIC ADSORBENTS

Also Published As

Publication number Publication date
FR406905A (en) 1910-02-15

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