Patent ID: 6634187
Filing Date: 2003-10-21
Classification: C03B

Abstract:
An orifice ring assembly for an apparatus for forming a cased glass stream, comprising:an orifice ring of ceramic construction having a pocket with a flat upper surface, a passage extending laterally from said pocket for receiving casing glass, and at least one opening extending through said ring from said flat upper surface, a metal bushing secured in said at least one opening, said bushing having a cylindrical body with opposed ends, a first flange extending from said bushing body between said ends in facing abutment with said flat upper surface and a second flange at one of said bushing ends spaced from said flat upper surface providing an unobstructed flow of glass along said flat upper surface beneath said second flange, the other end of said bushing body being disposed adjacent to an undersurface of said orifice ring, and a ferrule secured to said other bushing end in facing abutment with said undersurface and sealingly clamping said orifice ring between said ferrule and said first flange.