US PATENT SUBCLASS 222 / 597
.~.~ Closure

Current as of: June, 1999
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222 /   HD   DISPENSING

591  DF  MOLTEN METAL DISPENSING {6}
594  DF  .~ Flow controllers or assists {3}
597.~.~ Closure {4}
598  DF  .~.~.~> Movable about an axis {1}
600  DF  .~.~.~> Reciprocating transverse to flow
601  DF  .~.~.~> Stopper operator structure beneath receptacle
602  DF  .~.~.~> Stopper operator structure above receptacle

DEFINITION

Classification: 222/597

(under subclass 594) Apparatus wherein the evacuation of the molten metal from the receptacle is regulated by a flow stop means at the opening either removable therefrom or movable to a position allowing for molten metal egress.