Metal founding – Means to apply vacuum directly to work or to hold or... – Means applying vacuum or suction directly to molten casting...
Patent
1986-06-09
1987-04-21
Godici, Nicholas P.
Metal founding
Means to apply vacuum directly to work or to hold or...
Means applying vacuum or suction directly to molten casting...
164 63, 164256, B22D 1806
Patent
active
046588809
ABSTRACT:
Apparatus for the vacuum, countergravity casting of metal in shell molds including a gas-permeable shell mold secured to the mouth of a vacuum box by a plurality of threadable mounting sites atop the mold engaged by self-tapping threads on the ends of rotatable shafts reciprocably slidable through the ceiling of the vacuum box.The mounting sites may comprise upstanding lugs atop the mold.
REFERENCES:
patent: 2997756 (1961-08-01), Strom
patent: 4508157 (1985-04-01), Belliveau et al.
Batten, Jr. J. Reed
General Motors Corporation
Godici Nicholas P.
Plant Lawrence B.
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