US PATENT SUBCLASS 425 / 563
.~.~ Biased, pressure responsive means


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}
562  DF  .~ With means between charger and mold to cut off flow of fluent stock (e.g., needle valve, baffle, etc.) {2}
563.~.~ Biased, pressure responsive means


DEFINITION

Classification: 425/563

(under subclass 562) Apparatus wherein the flow stopping means is resiliently urged out of stopping condition and wherein pressure of the fluent stock acts on a portion thereof to bring about the stopping condition thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

135+, for means to sense a pressure change of fluent stock and activate a stopping means in response thereto.

146, for an automatic valve actuated by differential pressure of fluent molding material en route to a shaping area.