US PATENT SUBCLASS 425 / 157
.~.~ In press mold cycle

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.~.~ In press mold cycle {1}
158  DF  .~.~.~> With timer for molding material preheat period

DEFINITION

Classification: 425/157

(under subclass 156) Apparatus in which the time period limited is that between the application of pressure on the molding material by opposed pressure surfaces and the release of the pressure for removal of the product.