US PATENT SUBCLASS 425 / 557-- .~ With accumulator, trap chamber, or serially arranged valves between charger and mold

US PATENT SUBCLASS 425 / 557
.~ With accumulator, trap chamber, or serially arranged valves between charger and mold

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		.~ With accumulator, trap chamber, or serially arranged valves between charger and mold {4}
558	DF	.~.~> Changeable volume accumulator
559	DF	.~.~> Accumulator with check valve supplying fluent thereto
560	DF	.~.~> Including valve to alternatively direct fluent stock to accumulator or mold
561	DF	.~.~> Accumulator with plunger of charger acting as valve

DEFINITION

Classification: 425/557

(under subclass 542) Apparatus wherein (1) volumetric compartment means is provided to receive and temporarily contain a specific portion of fluent stock material, or (2)

plural valve means are sequentially arranged between a discharge assistant of the charging means and a shaping cavity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

448, for a forming surface and means feeding fluent stock thereto comprising a trap chamber; see the collection of search notes thereunder for apparatus under the class definition with a charger for delivering a measured charge.