Patent ID: 9114452
Filing Date: 2015-08-25
Classification: B22C

Abstract:
1. A metal casting riser sleeve system, comprising: a cope mold portion; an outer riser sleeve portion positioned in the cope mold portion and enclosing a central outer riser sleeve portion passageway between an outer riser sleeve portion bottom end and top end; an inner riser sleeve portion forming a central inner riser sleeve portion passageway between an inner riser sleeve portion bottom end and top end, the inner riser sleeve portion slidably positioned within the outer riser sleeve portion passageway; and the inner riser sleeve portion operable to slide upward such that the inner riser sleeve portion top end is above the outer riser sleeve portion top end and such that a riser sleeve system passageway is formed between the inner riser sleeve portion top end and the outer riser sleeve portion bottom end.