GB1345819A - Dispenser-type cathode and method for manufacturing a dispenser- type cathode - Google Patents

Dispenser-type cathode and method for manufacturing a dispenser- type cathode

Info

Publication number
GB1345819A
GB1345819A GB3553071A GB3553071A GB1345819A GB 1345819 A GB1345819 A GB 1345819A GB 3553071 A GB3553071 A GB 3553071A GB 3553071 A GB3553071 A GB 3553071A GB 1345819 A GB1345819 A GB 1345819A
Authority
GB
United Kingdom
Prior art keywords
dispenser
type cathode
manufacturing
cathode
type
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
GB3553071A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1345819A publication Critical patent/GB1345819A/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
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microwave Tubes (AREA)
  • Solid Thermionic Cathode (AREA)
  • Powder Metallurgy (AREA)
GB3553071A 1970-07-30 1971-07-28 Dispenser-type cathode and method for manufacturing a dispenser- type cathode Expired GB1345819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702037874 DE2037874B2 (en) 1970-07-30 1970-07-30 METHOD OF MAKING A SUPPLY CATHOD

Publications (1)

Publication Number Publication Date
GB1345819A true GB1345819A (en) 1974-02-06

Family

ID=5778400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3553071A Expired GB1345819A (en) 1970-07-30 1971-07-28 Dispenser-type cathode and method for manufacturing a dispenser- type cathode

Country Status (4)

Country Link
US (1) US3758808A (en)
DE (1) DE2037874B2 (en)
FR (1) FR2099382A5 (en)
GB (1) GB1345819A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168193A (en) * 1984-10-18 1986-06-11 Oxford Lasers Ltd Laser discharge tube

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983443A (en) * 1975-03-24 1976-09-28 Rca Corporation Vacuum electron device having directly-heated matrix-cathode-heater assembly
US4388551A (en) * 1980-11-24 1983-06-14 Zenith Radio Corporation Quick-heating cathode structure
US4781640A (en) * 1985-01-24 1988-11-01 Varian Associates, Inc. Basket electrode shaping
EP0641007A3 (en) * 1993-08-31 1995-06-21 Samsung Display Devices Co Ltd Direct-heating-type dispenser cathode structure.
US6455990B1 (en) * 1998-12-11 2002-09-24 United Technologies Corporation Apparatus for an electron gun employing a thermionic electron source

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666158A (en) * 1951-07-12 1954-01-12 Polaroid Corp Electric projection lamp
US2975317A (en) * 1959-04-07 1961-03-14 Univ California Beam control device
GB962926A (en) * 1962-03-19 1964-07-08 Rank Bush Murphy Ltd Improvements in thermionic cathodes and in methods of manufacturing such cathodes
US3312856A (en) * 1963-03-26 1967-04-04 Gen Electric Rhenium supported metallic boride cathode emitters
US3441767A (en) * 1967-02-01 1969-04-29 Sylvania Electric Prod Tensioned directly heated cathode having improved temperature characteristics
JPS464029Y1 (en) * 1968-05-28 1971-02-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168193A (en) * 1984-10-18 1986-06-11 Oxford Lasers Ltd Laser discharge tube
GB2168193B (en) * 1984-10-18 1989-05-24 Oxford Lasers Ltd Improvements in lasers

Also Published As

Publication number Publication date
FR2099382A5 (en) 1972-03-10
DE2037874B2 (en) 1972-12-14
US3758808A (en) 1973-09-11
DE2037874A1 (en) 1972-02-24

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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