US PATENT SUBCLASS 222 / 596
.~.~ Piston displacement

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}
596.~.~ Piston displacement

DEFINITION

Classification: 222/596

(under subclass 594) Apparatus wherein the flow of molten metal is regulated by the action of a movable wall of an expansible chamber device, the movable wall directly engaging the molten metal.