Static mold vent
OwnerKenneth Holtinventor
Life of this patent
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Abstract
A static mold vent comprising a bore extending through a mold wall with a cylindrical inner portion opening at a cavity surface in the mold and a threaded outer portion opening at an exterior surface of the mold, a plug with a threaded outer portion engaged in the threaded portion of the bore and cylindrical inner portion projecting inwardly through the inner portion of the bore and cooperating therewith to define an air conducting annulus opening at said cavity surface, air bleed means in the plug communicating between the outer end thereof and the outer end of the annulus and tool engaging means engageable at the rear end of the plugs.
Claims9
A mold having a mold cavity surface and an outer surface defining a mold wall therebetween, said mold wall having an opening extending through said wall, said opening having a straignt cylindrical inner end portion and a threaded outer end portion, an elongate plug with a threaded outer end portion engaged in the outer portion of the opening and a cylindrical inner portion smaller in diameter than the inner end portion of the opening and arranged concentrically therein and defining an inwardly opening air conducting annulus coextensive with the inner portion of the plug and air bleed means in the plug communicating between the outer ends of the annulus and the plug, said plug defining an inner end face in plane alignment with the plane of the portion of the cavity surface about the annulus and tool engaging means at the outer end of the plug.
Dependencies are inferred from the claim text.