Patent ID: 6322052
Filing Date: 2001-11-27
Classification: H01B,Y10T

Abstract:
A valve to ventilate a mold for producing umbrella-shaped insulators, comprising:a pin-shaped valve housing;a valve orifice on a front face of the valve housing;a valve body detachably mounted on a back face as an axial extension of the valve housing, the valve body having a bore extending coaxially to an axially extending cylindrical valve space in the valve housing;a connecting rod extending through the bore and through the valve space to the valve orifice;a valve piston positioned at one end of the connecting rod and having a seal positioned on the front face of the valve piston to engage and tightly close the valve orifice;at least one axial overflow duct in the piston;the valve piston having a diameter corresponding to the inside diameter of the valve housing adjacent the valve orifice;a pressure spring between a pressure surface of the valve body and a back side of the valve piston, andthe valve housing having an air inlet opening which extends into the valve space.