US PATENT SUBCLASS 425 / 561
.~.~ Accumulator with plunger of charger acting as valve

Current as of: June, 1999
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425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

542  DF  FEMALE MOLD AND CHARGER TO SUPPLY FLUENT STOCK UNDER PRESSURE THERETO IN FLUID-TIGHT RELATIONSHIP (E.G., INJECTION MOLD, ETC.) {17}
557  DF  .~ With accumulator, trap chamber, or serially arranged valves between charger and mold {4}
561.~.~ Accumulator with plunger of charger acting as valve

DEFINITION

Classification: 425/561

(under subclass 557) Apparatus including a volumetric compartment wherein reciprocating means is provided to transfer the fluent stock to the shaping cavity, which reciprocating means also functions to seal the volumetric compartment against flow of fluent stock from the shaping cavity or from the supply line coming into the compartment.