Patent ID: 6261409
Filing Date: 2001-07-17
Classification: B29D,Y10S

Abstract:
An inner annular curing envelope for use in retreading a tire casing having an interior surface outer sidewalls and a pair of terminating beads, comprising:a one-piece inner annular curing envelope molded of an elastomeric material and having a peripheral portion and a pair of skirt portions for contiguously contacting the interior surface of the tire casing,each of said skirt portions extending inwardly from said peripheral portion to an innermost annular edge and having an annular flange extending outwardly therefrom and reversely turned along said skirt portion so that, when installed on a tire casing, said flanges of said inner annular curing envelope extend around the terminating beads of the tire casing and engage a portion of the outer sidewall of the tire casing, anda section of said peripheral portion and said pair of skirt portions being formed with a network of grooves to provide radial air passageways which facilitate complete evacuation of air between said inner curing envelope and the interior surface of the tire casing.