Color selecting electrode for color-picture tube and manufacturi

Details Color selecting electrode for color-picture tube and manufacturi Color selecting electrode for color-picture tube and manufacturi

1995-11-29

1997-06-03

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 37, H01J 2907

Patent

active

056348380

ABSTRACT:
A color selecting electrode for a color-picture tube, includes a rectangular frame-shaped frame having a pair of mutually-opposite long sides and a pair of mutually-opposite short sides, and a mask plate which is stretchedly supported on top surfaces of the frame while receiving a resilient spring force exerted from the frame, the long sides having a greater section modulus and a greater rigidity than the short sides. A method of manufacturing the color selecting electrode includes the step of welding, to the frame pressed inward by an equally-distributed force applied to the pair of long sides and the pair of short sides, the mask plate of which four sides are stretched outward by a distributed force which approximately counterbalances the equally distributed force.

REFERENCES:
patent: 3715906 (1973-02-01), Roper
patent: 4333034 (1982-06-01), Ohgoshi et al.
patent: 5214349 (1993-05-01), Sakata et al.

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