Method and apparatus for supporting a shadow mask

Details Method and apparatus for supporting a shadow mask Method and apparatus for supporting a shadow mask

1989-01-19

1990-10-16

Wieder, Kenneth

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313407, 445 30, H01J 918, H01J 2907

Patent

active

049637860

ABSTRACT:
In a color cathode ray tube according to this invention, there are provided a plurality of first elastic supporting members welded to a mask frame to support a shadow mask in a panel and each having a metal plate, and at least one second elastic supporting member each having a metal plate and a washer. The area of a polygon formed on a plane lying at right angles with the tube axis and having apices corresponding to the first elastic supporting members is at least about 1/2 of the area of the substantial quadrangle formed by projecting the shadow mask on said plane.

REFERENCES:
patent: 3334259 (1967-08-01), Shrader
patent: 4652792 (1987-03-01), Tokita et al.

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