B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/124
B22D 18/06 (2006.01)
Patent
CA 1228465
COUNTER-GRAVITY CASTING MOLD Abstract of the Disclosure A thin-walled, resin-bonded sand, shell mold con the vacuum counter-gravity casting of metal comprising cope and drag halves glued together at a parting line there between. The drag includes a flange extending beyond the periphery of the cope which flange has an upper sealing surface formed by a drag-shaping pattern for effecting a seal with the mouth of the vacuum chamber used to fill the mold.
488427
General Motors Corporation
Gowling Lafleur Henderson Llp
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