US Patent:
20020192323, Dec 19, 2002
Inventors:
CARL E. RADZIO - BROCKPORT NY, US
RICHARD C. BENSON - ROCHESTER NY, US
ROBYN S. CHADDOCK - ELBA NY, US
International Classification:
B29C045/84
US Classification:
425/149000, 425/151000, 425/577000, 425/812000
Abstract:
An injection molding apparatus has a non-metallic injection mold and a pressure relief valve for handling excess resin pressure in the cavity mold. The pressure relief valve responds to excess resin pressure in the hollow by providing an alternate resin passage for the pressurized excess resin.