GB974974A - Cathode-grid assembly for electron guns - Google Patents

Cathode-grid assembly for electron guns

Info

Publication number
GB974974A
GB974974A GB37743/61A GB3774361A GB974974A GB 974974 A GB974974 A GB 974974A GB 37743/61 A GB37743/61 A GB 37743/61A GB 3774361 A GB3774361 A GB 3774361A GB 974974 A GB974974 A GB 974974A
Authority
GB
United Kingdom
Prior art keywords
cathode
washer
grid
fixed
grid assembly
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
GB37743/61A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB974974A publication Critical patent/GB974974A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H01J29/506—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube guns in delta or circular configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/485—Construction of the gun or of parts thereof

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

974,974. Electron beam apparatus. RADIO CORPORATION OF AMERICA. Oct. 20, 1961 [Nov. 14, 1960], No. 37743/61. Heading H1D. A cathode-grid assembly for an electron gun comprises a tubular cathode 32, closed at one 'end, and extending through an aperture in a ceramic washer 44, a support sleeve 48 coaxially surrounding and fixed to the cathode and brazed to a metallized surface portion 52 of washer 44, and a grid cup 30 coaxially surrounding, and fixed to washer 44 by a mounting sleeve 46. As shown, the grid cup 30 is spotwelded to a mounting sleeve 46 brazed to an annular metallized area 50 of washer 44. Annular groove 54 and ridge 56 on the washer reduce the possibility of electrical leakage between grid and cathode. Support sleeve 48 has only a short section 62 in contact with the washer to minimize thermal conduction between these two parts. A colour television tube may comprise three electron guns each including a cathode-grid assembly as shown, a screen grid, a focusing electrode, and an accelerating electrode fixed to a dynamic convergence cage, Fig. 1 (not shown).
GB37743/61A 1960-11-14 1961-10-20 Cathode-grid assembly for electron guns Expired GB974974A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68817A US3128407A (en) 1960-11-14 1960-11-14 Cathode-grid assembly for electron guns

Publications (1)

Publication Number Publication Date
GB974974A true GB974974A (en) 1964-11-11

Family

ID=22084882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37743/61A Expired GB974974A (en) 1960-11-14 1961-10-20 Cathode-grid assembly for electron guns

Country Status (4)

Country Link
US (1) US3128407A (en)
DE (1) DE1195872B (en)
GB (1) GB974974A (en)
NL (2) NL134600C (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200283A (en) * 1961-05-26 1965-08-10 Gen Electric Ruggedized cathode mount
BE634599A (en) * 1962-07-06
US3244927A (en) * 1963-10-18 1966-04-05 Sylvania Electric Prod Supporting structure
US3250935A (en) * 1964-08-04 1966-05-10 Kentucky Electronics Inc Matrix multiple gun assembly for cathode ray tube
US3324328A (en) * 1964-09-28 1967-06-06 Sylvania Electric Prod Magnetic convergence assembly and electron beam shielding means for color cathode ray tubes
US3353049A (en) * 1965-06-18 1967-11-14 Rauland Corp Dynamic convergence assembly shielding and mounting structure
US3441769A (en) * 1967-04-26 1969-04-29 Kentucky Electronics Inc Slotted convergence cup electrode for color television tube with flanged rim snubber springs,and having flanged magnetic pole pieces therein
US3626231A (en) * 1969-03-05 1971-12-07 Sylvania Electric Prod Thermal shunt for a cathode structure
US3593396A (en) * 1970-03-09 1971-07-20 Kentucky Electronics Inc Methods of making convergence cup electrodes by affixing shields to inner cylinder walls
US3983442A (en) * 1975-05-19 1976-09-28 Westinghouse Electric Corporation Electron gun cathode support structure
NL7807757A (en) * 1978-07-20 1980-01-22 Philips Nv RECORDING TUBE AND METHOD FOR MANUFACTURE THEREOF.
US4298818A (en) * 1979-08-29 1981-11-03 Rca Corporation Electron gun
KR940006086Y1 (en) * 1991-12-24 1994-09-08 주식회사 금성사 Bead supporter positioning apparatus for crt electron gun
US5402035A (en) * 1992-09-23 1995-03-28 Goldstar Co., Ltd. Cathode structure for an electron tube
JPH10312757A (en) * 1997-05-12 1998-11-24 Hitachi Ltd Color cathode-ray tube
GB2414856B (en) * 2004-06-03 2008-11-12 Nanobeam Ltd Charged particle gun

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE527842A (en) * 1953-04-03
DE1005201B (en) * 1953-05-06 1957-03-28 Telefunken Gmbh Holder for the indirectly heated cathode of an electrical discharge tube, in particular an electron beam tube
US2833952A (en) * 1955-10-14 1958-05-06 Sylvania Electric Prod Cathode ray tube electrode assembly
US2963608A (en) * 1957-08-07 1960-12-06 Sylvania Electric Prod Cathode ray tube structure

Also Published As

Publication number Publication date
US3128407A (en) 1964-04-07
NL134600C (en)
NL271319A (en)
DE1195872B (en) 1965-07-01

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