Process and apparatus for the manufacture of cathode ray tubes

Details Process and apparatus for the manufacture of cathode ray tubes Process and apparatus for the manufacture of cathode ray tubes

H - Electricity

01

J

316/12

H01J 9/00 (2006.01)

Patent

CA 1313896

ABSTRACT A reusable factory fixture frame is disclosed for use in the manufacture of a color cathode ray tube having a flat faceplate and a tensed foil shadow mask. The frame provides for mounting an in-process shadow mask during photoexposure of in-process faceplate in a lighthouse. The frame includes a generally rectangular frame structure having grooves thereabout for receiving an edge of the shadow mask. Quick-release mechanical spring clips are provided for temporarily and removably supporting the in-process shadow mask in tension in the grooves. The shadow mask is heated and allowed to ex- pand prior to being temporarily and removably supported on the frame, and the shadow mask is allowed to cool and shrink in tension while so being supported to effect tensing of the shadow mask in clamped condition on the frame.

583192

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