Liquid cooling for mould for making glass utensils

Application Number  00128778 Application Date  2000.09.20
Publication Number  1288868 Publication Date  2001.03.28
Priority Information   1999/9/20 US 09/400123  
Applicant(s) Name  Owens-Brockway Glass Container Inc.  
Inventor(s) Name  D.L. Luiss;D.L. Harmbury  
Patent Agency Code  72001 Patent Agent  zhou beilin
AbstractA glassware forming mold that includes a body (30 or 92) of heat conductive construction having a central portion with a forming surface (32 or 32a) for shaping molten glass and a peripheral portion spaced radially outwardly of the central portion. A plurality of coolant passages (34a to 34h, 54 to 70) extend in a spaced array through the peripheral portion of the mold body, and liquid coolant is directed through such passages for extracting heat from the body by conduction from the forming surface. A plurality of openings (36a to 36q) extend axially into the body radially between at least some of the liquid coolant passages and the forming surface for retarding heat transfer from the forming surface to liquid coolant in the passages.