Factory fixture frame with means for temporarily a

专利名称：Factory fixture frame with means for

temporarily and removably supporting anin-process tension mask for a color cathoderay tube

发明人：Lawrence W. Dougherty,James L. Kraner申请号：US07/139997申请日：19871231公开号：US04840596A公开日：19890620

摘要：A reusable factory fixture frame is disclosed for use in the manufacture of acolor cathode ray tube having a flat faceplate and a tensed foil shadow mask. The frameprovides for mounting an in-process shadow mask during photoexposure of an in-process faceplate in a lighthouse. The frame includes a generally rectangular framestructure having grooves thereabout for receiving an edge of the shadow mask. Spring-loaded mechanical mask-retaining devices are secured to the side of the factory fixtureframe for temporarily and removably supporting the in-process shadow mask in tensionin the grooves. The shadow mask is heated and allowed to expand prior to beingtemporarily and removably supported on the frame, and the shadow mask is allowed tocool and shrink in tension while so being supported to effect tensing of the shadow maskin clamped condition on the frame.

申请人：ZENITH ELECTRONICS CORPORATION

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