Method of manufacturing a tied slit mask CRT

Details Method of manufacturing a tied slit mask CRT Method of manufacturing a tied slit mask CRT

1990-02-21

1990-11-27

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 47, H01J 2907

Patent

active

049732838

ABSTRACT:
A slit-type foil tension mask and associated front assembly for a color cathode ray tube comprise a series of parallel strips separated by slits. The strips are loosely coupled by widely spaced ties, the wide tie spacing being such as to produce a strip coupling which promotes handleability of the mask during mask and tube fabrication and facilitates damping of strip vibration when mounted in a tube, but which is insufficient to induce unacceptable Poisson contraction of the mask when uniaxially tensed along the direction of the strips in the plane of the mask, or to permit an unacceptable thermal expansion perpendicular to said strips.

REFERENCES:
patent: 2701847 (1955-02-01), Yanagisawa et al.
patent: 2813213 (1957-11-01), Cramer
patent: 2905845 (1959-09-01), Vincent
patent: 3638063 (1972-01-01), Tachikawa
patent: 3894321 (1975-07-01), Moore
patent: 3944867 (1976-03-01), Kaplan
patent: 3989254 (1976-11-01), Palac
patent: 4100451 (1978-07-01), Palac
patent: 4495437 (1985-01-01), Kume
patent: 4686416 (1987-08-01), Dougherty
patent: 4695761 (1987-09-01), Fendley
Grimes et al., Proceedings of the I-R-E, Jan., 1954, pp. 315-325.

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