GB1349128A - Indirectly heated cathodes - Google Patents

Indirectly heated cathodes

Info

Publication number
GB1349128A
GB1349128A GB5738972A GB5738972A GB1349128A GB 1349128 A GB1349128 A GB 1349128A GB 5738972 A GB5738972 A GB 5738972A GB 5738972 A GB5738972 A GB 5738972A GB 1349128 A GB1349128 A GB 1349128A
Authority
GB
United Kingdom
Prior art keywords
indirectly heated
heated cathodes
cathodes
indirectly
heated
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
GB5738972A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1349128A publication Critical patent/GB1349128A/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
    • 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
GB5738972A 1971-12-16 1972-12-13 Indirectly heated cathodes Expired GB1349128A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7117226A NL7117226A (en) 1971-12-16 1971-12-16

Publications (1)

Publication Number Publication Date
GB1349128A true GB1349128A (en) 1974-03-27

Family

ID=19814707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5738972A Expired GB1349128A (en) 1971-12-16 1972-12-13 Indirectly heated cathodes

Country Status (8)

Country Link
US (1) US3823453A (en)
JP (1) JPS5228631B2 (en)
BE (1) BE792763A (en)
CA (1) CA956694A (en)
DE (1) DE2258160B2 (en)
FR (1) FR2163606B1 (en)
GB (1) GB1349128A (en)
NL (1) NL7117226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174237A (en) * 1985-03-18 1986-10-29 Hitachi Ltd Indirectly heated cathode manufacture

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5739010B2 (en) * 1973-11-02 1982-08-19
US3919751A (en) * 1974-02-08 1975-11-18 Gte Sylvania Inc Method of making fast warm up picture tube cathode cap having high heat emissivity surface on the interior thereof
JPS50146466U (en) * 1974-05-20 1975-12-04
JPS6016059B2 (en) * 1977-08-11 1985-04-23 ソニー株式会社 Cathode ray tube manufacturing method
NL8100928A (en) * 1981-02-26 1982-09-16 Philips Nv OXYD CATHODE.
US4781640A (en) * 1985-01-24 1988-11-01 Varian Associates, Inc. Basket electrode shaping
KR960007663Y1 (en) * 1990-12-29 1996-09-06 Lg Electronics Inc Cathode structure
TW259878B (en) * 1993-03-17 1995-10-11 Toshiba Co Ltd
CN101075515B (en) * 2007-06-28 2011-09-07 北京工业大学 High-curren density heterogeneous beam electron source

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1897933A (en) * 1928-08-02 1933-02-14 Peoples Gas By Products Corp Electrode for electron discharge tubes and method of forming the same
US2726308A (en) * 1952-02-13 1955-12-06 Cinamon Lionel Welding method
US2970204A (en) * 1958-02-27 1961-01-31 Piceu Electric welding method and composition
US2978606A (en) * 1959-01-02 1961-04-04 Sylvania Electric Prod Electron discharge device
US3535757A (en) * 1968-03-22 1970-10-27 Rca Corp Method for making cathode assembly for electron tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174237A (en) * 1985-03-18 1986-10-29 Hitachi Ltd Indirectly heated cathode manufacture
GB2174237B (en) * 1985-03-18 1989-10-04 Hitachi Ltd A manufacturing method of indirectly heated cathode
US5102363A (en) * 1985-03-18 1992-04-07 Hitachi, Ltd. Manufacturing method of indirectly heated cathode

Also Published As

Publication number Publication date
US3823453A (en) 1974-07-16
DE2258160B2 (en) 1977-06-02
DE2258160A1 (en) 1973-06-20
JPS4866968A (en) 1973-09-13
FR2163606B1 (en) 1977-04-08
CA956694A (en) 1974-10-22
JPS5228631B2 (en) 1977-07-27
FR2163606A1 (en) 1973-07-27
NL7117226A (en) 1973-06-19
BE792763A (en) 1973-06-14

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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