US PATENT SUBCLASS 425 / 288
.~ Relatively movable concentric internal and external members coacting with orifice means

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

287  DF  FORMER OF THE DIE EXPRESSING TYPE MAKING DOUGHNUT SHAPES {1}
288.~ Relatively movable concentric internal and external members coacting with orifice means

DEFINITION

Classification: 425/288

(under subclass 287) Apparatus in which means defining the shaping orifice includes concentric internal and external members which are relatively movable and which cooperate with the orifice means to provide the shape imparting means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

381, for extrusion apparatus including a movable orifice or a movable mounted mandrel mounted within an orifice.