Glass funnel having concave portions to reduce rigidity

Abstract

Glass funnel suitable for use in cathode ray tubes having concave portions R3,11 formed substantially along diagonals of the body 6. The body 6 also comprises yoke portion 4 and neck portion 5 and may have a plurality of yoke and neck portions. The width and depth of the concave portions may be altered and may decrease from the open end portion 17 towards the yoke portion 4. The concave portions give a reduced rigidity to the diagonal portions of the body 6.

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    EP-0369770-A1May 23, 1990Kabushiki Kaisha ToshibaKathodenstrahlröhre
    US-5258688-ANovember 02, 1993Zenith Electronics CorporationCRI funnel with concave diagonals

NO-Patent Citations (0)

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Cited By (8)

    Publication numberPublication dateAssigneeTitle
    EP-1244130-A1September 25, 2002Nippon Electric Glass Company, LimitedTrichter für eine Kathodenstrahlröhre
    GB-2385461-AAugust 20, 2003Nippon Electric Glass CoGlass funnel and glass bulb for cathode ray tube
    GB-2385461-BApril 13, 2005Nippon Electric Glass CoGlass funnel for cathode-ray tube and glass bulb for cathode-ray tube
    GB-2385710-AAugust 27, 2003Nippon Electric Glass CoGlass funnel and glass bulb for cathode ray tube
    GB-2385710-BMay 18, 2005Nippon Electric Glass CoGlass funnel and glass bulb for cathode ray tube
    US-6608645-B2August 19, 2003Nippon Electric Galss Co., Ltd.Funnel for cathode ray tube
    WO-0247106-A1June 13, 2002Nippon Electric Glass Co., Ltd.Glass funnel and glass bulb for cathode ray tube
    WO-0247107-A1June 13, 2002Nippon Electric Glass Co., Ltd.Ampoule a col eclatee pour tube cathodique