| 摘要 |
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.
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