Color cathode ray tube with shadow mask having inwardly bent ski

Details Color cathode ray tube with shadow mask having inwardly bent ski Color cathode ray tube with shadow mask having inwardly bent ski

1980-02-20

1981-08-25

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313407, H01J 2907

Patent

active

042861896

ABSTRACT:
A color cathode ray tube wherein spring-back of a skirt of a shadow mask which causes the distortion of apertures of the shadow mask is prevented. The shadow mask is formed to exhibit a radius of curvature on an opposing pair of edges thereof. The shadow mask may be formed to exhibit a radius of curvature on four opposing edges. The radius of curvature is substantially equal to a radius of curvature of an apertured area of the shadow mask.

REFERENCES:
patent: 3358170 (1967-12-01), Fiore
patent: 3737703 (1973-06-01), Tsuneta et al.
patent: 3885190 (1975-05-01), Taniguchi et al.
patent: 4136300 (1979-01-01), Morrell

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