Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1993-04-26
1995-05-16
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313402, 313403, 313404, H01J 2981
Patent
active
054163803
ABSTRACT:
An arm member for a color selection mechanism of a color cathode ray tube which is reduced in weight, can be produced at a reduced cost, can cope with a model change of a cathode ray tube readily and can be worked readily with a high degree of accuracy without the necessity of a special material and a color selection mechanism employing the arm member are disclosed. The color selection mechanism comprises a pair of support bars extending substantially in parallel to each other, a pair of arm members joined to and extending substantially in parallel to each other between the bars, and a mask having a plurality of parallel ribbon-shaped grid elements extending under tension between and joined to the bars. Portions of the arm members at which the arm members are joined to the bars have surfaces having complementary shapes to those of the bars. The arm members have opening areas formed therein in an opposing relationship to each other.
REFERENCES:
patent: 3529199 (1970-09-01), Duistermaat et al.
patent: 4495437 (1985-01-01), Kume et al.
patent: 4780641 (1988-10-01), Hashiba et al.
Esserman Matthew J.
O'Shea Sandra L.
Sony Corporation
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