Supporting frame structure for tension-type shadow mask of...

Details Supporting frame structure for tension-type shadow mask of... Supporting frame structure for tension-type shadow mask of...

2005-07-05

2005-07-05

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

C313S402000

Reexamination Certificate

active

06914376

ABSTRACT:
A frame for supporting a tension-type shadow mask of a color CRT, which can increase the contact force of a damper wire at the peripheral portion of the shadow mask thus to improve the howling phenomenon is disclosed. The frame comprises a pair of first frames, each having a portion for supporting a shadow mask, respectively; and a pair of second frames combined with the first frames for applying elastic force to the shadow mask, wherein each of the portions for supporting in the first frames has inflection points where the curvature of the portions for supporting is increased at peripheral portions thereof after the first frames are compressed, for supporting the shadow mask and increasing a friction force for a damper wire at the periphery of the shadow mask.

REFERENCES:
patent: 5644192 (1997-07-01), Ragland, Jr.
patent: 5949183 (1999-09-01), Saita et al.
patent: 6188169 (2001-02-01), Takayanagi
patent: 6339283 (2002-01-01), Horiuchi
patent: 6366010 (2002-04-01), Suganuma et al.
patent: 6420823 (2002-07-01), Tanaka
patent: 09007528 (1997-01-01), None
patent: 10106449 (1998-04-01), None
patent: 10199440 (1998-07-01), None
patent: 11273586 (1999-10-01), None

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