GB1011441A - Electron gun - Google Patents

Electron gun

Info

Publication number
GB1011441A
GB1011441A GB28174/63A GB2817463A GB1011441A GB 1011441 A GB1011441 A GB 1011441A GB 28174/63 A GB28174/63 A GB 28174/63A GB 2817463 A GB2817463 A GB 2817463A GB 1011441 A GB1011441 A GB 1011441A
Authority
GB
United Kingdom
Prior art keywords
grid
cathode
sleeve
ceramic ring
ring
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
GB28174/63A
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.)
Kentucky Electronics Inc
Original Assignee
Kentucky Electronics Inc
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
Priority claimed from US217790A external-priority patent/US3204141A/en
Application filed by Kentucky Electronics Inc filed Critical Kentucky Electronics Inc
Publication of GB1011441A publication Critical patent/GB1011441A/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
    • H01J29/485—Construction of the gun or of parts thereof
    • 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

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1,011,441. Electron guns. KENTUCKY ELECTRONICS Inc. July 16, 1963 [Aug. 20, 1962], No. 28174/63. Heading H1D. In an electron gun assembly the tubular cathode 40, Fig. 8, in sliding fit engagement at its larger end 82 with a cathode base sleeve 42 which has a portion 92 of reduced diameter where it is fixed to a ceramic ring 44. The arrangement is such that a reduced portion 84 of the cathode is spaced from the sleeve 42 where the sleeve engages the ceramic ring. As shown, the sleeve 42 has a shoulder 90 and an outturned lip 94 engaging opposite sides of a reduced portion 96 of the ceramic ring. The ceramic ring is held in a mounting ring 46. The cathode base sleeve 42 is made of non-electron emissive material or is provided with a non- emissive coating 43 and the ceramic ring is formed with a ridge 98 and a valley 100 to avoid the formation of a leakage path. Holes 95 are provided in the cathode base sleeve for testing the spacing between the cathode 84 and the first grid 52 by the throughput of air during assembly. The grid 52 is corrugated, the corrugations permitting, where the grid engages the support ring 46, the escape of heat. The escape of heat is also facilitated by supporting the flat central portion of the grid by webs from the main body of the electrode. In another embodiment, Fig. 5, the first grid 20 is positioned relative to the cathode by a ceramic spider 80. In all embodiments the gun includes a second grid which may be planar or frusto-conical and complementary to the grid 52 shown in Fig. 8.
GB28174/63A 1962-08-20 1963-07-16 Electron gun Expired GB1011441A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US217790A US3204141A (en) 1962-08-20 1962-08-20 Electron gun
US408308A US3319102A (en) 1962-08-20 1964-11-02 Electron gun assembly with increased cooling surfaces

Publications (1)

Publication Number Publication Date
GB1011441A true GB1011441A (en) 1965-12-01

Family

ID=26912265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28174/63A Expired GB1011441A (en) 1962-08-20 1963-07-16 Electron gun

Country Status (4)

Country Link
US (1) US3319102A (en)
DE (1) DE1464759A1 (en)
GB (1) GB1011441A (en)
NL (1) NL296882A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790267A (en) * 1971-10-19 1973-04-19 Gte Sylvania Inc CATHODE BASE
US3936686A (en) * 1973-05-07 1976-02-03 Moore Donald W Reflector lamp cooling and containing assemblies
US3983442A (en) * 1975-05-19 1976-09-28 Westinghouse Electric Corporation Electron gun cathode support structure
US4595858A (en) * 1984-12-03 1986-06-17 Rca Corporation Reinforcing means for a cup-shaped electron gun electrode
US5637952A (en) * 1993-04-26 1997-06-10 Nokia Technology Gmbh High-current cathode for picture tubes including a grid 3-electrode having a diaphragm with reduced apertures
DE4313576C2 (en) * 1993-04-26 1996-07-18 Nokia Deutschland Gmbh Electron gun system
KR200190103Y1 (en) * 1995-04-25 2000-08-01 김순택 Electron gun for cathode ray tube

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1595665A (en) * 1922-07-12 1926-08-10 Thomas W Kirkman Lightning arrester and method of making the same
US2505095A (en) * 1946-05-09 1950-04-25 Rca Corp Diode for ultra high frequencies
US2443916A (en) * 1947-06-27 1948-06-22 Rca Corp Cathode-grid assembly for cathode-ray tubes
US2582454A (en) * 1950-05-13 1952-01-15 Du Mont Allen B Lab Inc Cathode grid assembly
US2788460A (en) * 1951-05-23 1957-04-09 Itt Electrodes for electron discharge devices and methods of making same
BE527412A (en) * 1953-03-20
US2963608A (en) * 1957-08-07 1960-12-06 Sylvania Electric Prod Cathode ray tube structure
US3027479A (en) * 1958-06-27 1962-03-27 Rca Corp Electron guns
US3204141A (en) * 1962-08-20 1965-08-31 Kentucky Electronics Inc Electron gun

Also Published As

Publication number Publication date
US3319102A (en) 1967-05-09
NL296882A (en)
DE1464759A1 (en) 1968-11-07

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