Method and apparatus for feeding a recessed sand mold with molten metal under low pressure
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United States of America Patent
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Jan 31, 1995
Issued Date -
N/A
app pub date -
Dec 4, 1992
filing date -
Jun 22, 1990
priority date (Note) -
Expired
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Abstract
A multi-stage sand mold 4 defines a plurality of casting impressions or cavities 31 fed with molten metal from a tubular central chamber 28 via a pair of parallel intermediate ducts 30A, 30B extending horizontally outwardly from opposite sides of the chamber, and ingates 32A, 32B extending between the ducts and the impressions. All of the ingates fed by a single intermediate duct open into the same impression, thus implementing a balanced and uniform distribution of molten metal to the impressions.
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