US PATENT SUBCLASS 425 / 72.1
SHAPING ORIFICE AND DOWNSTREAM WORK CONTACTING GASEOUS TREATING MEANS


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

72.1SHAPING ORIFICE AND DOWNSTREAM WORK CONTACTING GASEOUS TREATING MEANS {1}
72.2  DF  .~> Orifice for filaments or fibers (e.g., spinneret)


DEFINITION

Classification: 425/72.1

SHAPING ORIFICE AND DOWNSTREAM WORK CONTACTING GASEOUS TREATING MEANS:

(under the class definition) Apparatus comprising means defining a shaping orifice and means causing a gaseous medium to contact work subsequent to issuing from the shaping orifice to heat, cool, react or otherwise the shaped work.

(1) Note. The means for contacting the formed product with a gas usually includes a means for forcing the gas past and in contact with the product; however, also included under this definition is a vacuum chamber or a means surrounding the product to retain or confine the atmosphere surrounding to product.

(2) Note. An inflating gas used in a subsequent inflating type reshaping apparatus is excluded from this subclass except where additional means are provided to condition or handle that gas as a treating gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:

326.1, for an extrusion means followed by an inflating type reshaping means.

461, for shaping orifice, per se, see Search Notes thereunder relating to combinations thereof.

SEE OR SEARCH CLASS

72, Metal Deforming, 286, for apparatus for extruding a preformed metal work piece and heating or cooling means.