Patent ID: 6412308
Filing Date: 2002-07-02
Classification: C03B

Abstract:
A glassware forming mold that comprises:at least one body of integrally formed heat conductive construction having a central portion with a forming surface for shaping molten glass and having a longitudinal mold axis, and a peripheral portion spaced radially outwardly of said central portion, a plurality of coolant passages that extend parallel to said mold axis and to each other in a circumferentially spaced array through said peripheral portion, each said passage having an inlet at an axial end of the mold body and an outlet at an axial end of the mold body for circulation of coolant through said passages, means for directing liquid coolant through said coolant passages for extracting heat from said body by conduction from said forming surface, and a plurality of cylindrical openings in said body that extend into said body parallel to said mold axis, parallel to each other and parallel to said coolant passages, each said opening extending from at least one axial end of said mold body, said openings being disposed radially between at least some of said coolant passages and said forming surface for retarding heat transfer from said surface to liquid coolant in said coolant passages.