Die cast vent block
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United States of America Patent
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Dec 24, 1996
Grant Date -
N/A
app pub date -
Sep 26, 1994
filing date -
Sep 26, 1994
priority date (Note) -
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Abstract
A die casting vacuum valve system with mating vent blocks which include lands and grooves defining a serpentine path enabling overflow of molten material. The path restricts, stops and prevents further flow of the molten material in the case of an electrical or mechanical malfunction.
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