Patent ID: 8186985
Filing Date: 2012-05-29
Classification: B29D

Abstract:
1. A tire mold comprising: a plurality of tread molding segments, each tread molding segment having an end face for mating with an adjoining tread molding segment, each of said segments further comprising a piston located on said end face and actuated by the opening and closing of the mold; each of said mold segments further comprising a retractable blade assembly having a first and second chamber; wherein the piston is positioned within the first chamber and having a plunger end in communication with a temperature sensitive block of material and a spring; said first chamber being in fluid communication with said second chamber; wherein said second chamber further comprises a retractable blade mounted within a blade collar wherein the blade collar is slidably received within said second chamber; said second chamber further comprises a temperature sensitive block of material and a spring.