US PATENT SUBCLASS 425 / 158
.~.~.~ With timer for molding material preheat period

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

155  DF  WITH CONTROL MEANS RESPONSIVE TO INDEPENDENTLY OPERATED TIMER {3}
156  DF  .~ For timing period mold is closed or period molding pressure is maintained {1}
157  DF  .~.~ In press mold cycle {1}
158.~.~.~ With timer for molding material preheat period

DEFINITION

Classification: 425/158

(under subclass 157) Apparatus which includes additional time period limiting means for timing the period during which the molding material is heated prior to introduction into the pressing means.