US PATENT SUBCLASS 425 / 542
FEMALE MOLD AND CHARGER TO SUPPLY FLUENT STOCK UNDER PRESSURE THERETO IN FLUID-TIGHT RELATIONSHIP (E.G., INJECTION MOLD, ETC.)

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

542FEMALE MOLD AND CHARGER TO SUPPLY FLUENT STOCK UNDER PRESSURE THERETO IN FLUID-TIGHT RELATIONSHIP (E.G., INJECTION MOLD, ETC.) {17}
543  DF  .~> Molding of thermosetting or cross-linking stock {1}
545  DF  .~> To make slide fastener element
546  DF  .~> With means to evacuate mold or provide controlled environment
547  DF  .~> With means to heat or cool {5}
553  DF  .~> With preform severing means movable relative to mold {1}
555  DF  .~> With shrinkage compensation means
556  DF  .~> With product ejector
557  DF  .~> With accumulator, trap chamber, or serially arranged valves between charger and mold {4}
562  DF  .~> With means between charger and mold to cut off flow of fluent stock (e.g., needle valve, baffle, etc.) {2}
567  DF  .~> With coupling between charger and mold {3}
574  DF  .~> With means to cause relative movement between mold and charger {1}
577  DF  .~> Mold having movable core or movable pin
578  DF  .~> With normally open stock chamber (e.g., hopper, etc.) {2}
585  DF  .~> Including feeder to supply stock to charger {2}
588  DF  .~> Plural mold cavities
589  DF  .~> With means to close mold {4}
595  DF  .~> With means to lock mold in closed position

DEFINITION

Classification: 425/542

(under the class definition) Apparatus comprising means defining a shaping cavity structure (i.e., a female mold) and means to force fluent stock material along a passage into the shaping cavity thereof under pressure, the shaping cavity and the stock forcing means adapted to function as a closed hydraulic system.

(1) Note. At the time of molding there is no movement between the molded article and the shaping cavity structure of this subclass.

(2) Note. Included in this and the indented subclasses are means for "injection molding", "briquetting", etc..

SEE OR SEARCH THIS CLASS, SUBCLASS:

117+, for composite article making apparatus utilizing preform handling or support means; if the injection molding type, see especially subclass 129.

253+, and 256+, for a shaping cavity combined with means to supply fluent material thereto by gravitational flow.

533, for injection molding means combined with blow molding means. SEE OR SEARCH CLASS

100, Presses,

145+, for auger conveyor type press means.

164, Metal Founding,

303+, for injection type metal shaping apparatus.

198, Conveyors: Power-Driven,

550.6, for a combination of a bin and screw conveyor; and subclass 625, for a screw conveyor, per se.

222, Dispensing,

251+, for apparatus for discharging or dispensing a material comprising a discharge assistant to pressurize a material.

249, Static Molds,

105+, for an injection mold including a static filling means in contact with the work. 366, Agitating,

79+, and 318+, for a mixer or kneader, including screw conveyor means in the working zone.