Patent ID: 7645131
Filing Date: 2010-01-12
Classification: B29C,B29D,F16K,Y10S

Abstract:
1. A vent valve for use with tire molds, comprising: a valve sleeve having a first portion and a second portion and having an aperture therethrough, the first portion of the valve sleeve being insertable into a bore of a tire mold; a valve insert located within the aperture of the valve sleeve, the valve insert including a valve shank that is at one end equipped with a disk and near the other end with an at least partially conical surface extending at least partially radially outward relative to the valve shank; and, a wound spring located within the valve sleeve about the valve insert; wherein, the vent valve further comprises a delimiter for limiting movement of the valve insert relative to the valve sleeve, the delimiter being formed by the conical surface near the end of the valve shank and a conical surface or part of conical surface of the valve sleeve.