Color cathode ray tube and color selection electrode device of c

Details Color cathode ray tube and color selection electrode device of c Color cathode ray tube and color selection electrode device of c

1991-10-24

1993-05-25

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313348, 313403, H01J 2907

Patent

active

052143490

ABSTRACT:
A color selection electrode device mounts: a color selection electrode composed of filaments for regulating the position which an electron beam of the cathode ray tube reaches on a pair of U-shaped frame bodies between which the color selection electrode is stretched. Support pieces are provided for connecting both end portions of the pair of frame bodies and holding the frame bodies at a predetermined space. The color selection electrode is a metal electrode which is composed of, for example, a multiplicity of filaments. The support pieces are composed of an elastic material and are bent due to the load which is applied to the frame bodies, thereby shortening the distance between the frame bodies. In this state, the color selection electrode is stretched between the frame bodies and both ends thereof are welded to the frame bodies. Thereafter, when the load is removed, a predetermined tension is uniformly applied to the color selection electrode by the elastic restoring force. The pair of frame bodes may have either a large rigidity or an appropriate elasticity.

REFERENCES:
patent: 2397233 (1946-03-01), Bingley
patent: 4333034 (1982-06-01), Ohgoshi et al.

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