Faceplate stress-relief in tension mask color cathode ray tube m

Details Faceplate stress-relief in tension mask color cathode ray tube m Faceplate stress-relief in tension mask color cathode ray tube m

1991-08-05

1992-09-08

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

65115, 65 41, H01J 926

Patent

active

051454378

ABSTRACT:
An apparatus for use in the manufacture of a color cathode ray tube that includes a faceplate with a screen embraced by which rails support a flat tension mask. The apparatus includes a radiant heat source for heating the faceplate, and shielding means including a heat shield for shielding a central area of the faceplate from the radient heat source. Stresses induced in the corners of the faceplate by the rails during thermal cycling of the tube are dispersed in the cooler central area of the faceplate.

REFERENCES:
patent: 3251670 (1966-05-01), Acloque
patent: 3298553 (1967-01-01), Lusher
patent: 4498884 (1985-02-01), Stover et al.

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