US PATENT SUBCLASS 425 / 591
.~.~ Common fluid pressure closes mold and performs injection

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}
589  DF  .~ With means to close mold {4}
591.~.~ Common fluid pressure closes mold and performs injection

DEFINITION

Classification: 425/591

(under subclass 589) Apparatus including a hydraulic drive means to move the segments into cavity forming position and including a hydraulic drive means to pressurize the fluent stock material and force the material into the shaping cavity, wherein the two hydraulic drive means are subjected to hydraulic pressure from the same source, without an intermediate pressure change means.