Color picture tube mask frame

Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield

Patent

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Details

H01J 2981

Patent

active

050577379

ABSTRACT:
A color picture tube mask frame includes a mask frame body which has a rectangular shape and in which a skirt portion of a molded shadow mask is fitted. The skirt portion corresponds to a shape of the mask frame and is molded to surround an apertured portion having a large number of apertures at a central portion of the shadow mask and to extend in a direction substantially perpendicular to the apertured portion. The mask frame body has a groove formed at each corner on a skirt portion receiving side so as to receive a thick wall portion formed at a corresponding corner of the shadow mask.

REFERENCES:
patent: 4645968 (1987-02-01), Ragland, Jr.
patent: 4949009 (1990-08-01), Iwamoto

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