US PATENT SUBCLASS 425 / 197
WITH UPSTREAM SCREEN OR PERFORATED PLATE FOR STRAINING, HOMOGENIZING, OR MIXING MATERIAL TO BE SHAPED

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

197WITH UPSTREAM SCREEN OR PERFORATED PLATE FOR STRAINING, HOMOGENIZING, OR MIXING MATERIAL TO BE SHAPED {2}
198  DF  .~> Upstream of multi-orifice shaping die
199  DF  .~> Plural screens or plates

DEFINITION

Classification: 425/197

(under the class definition) Apparatus comprising a screen means or perforated plate to separate, filter or cause mixing, homogenization or agitation of material to be shaped.

(1) Note. Perforated sleeves are considered "plate type" and are classified within this subclass.

(2) Note. Agitators, mixers, homogenizers or separators which are grooved and depend on cooperating surfaces to form a closure (thereby appearing as perforated) are not considered to be within the scope of this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

84, for an absorbent or foraminous means to remove a liquid during the molding operation.

176, for screens and perforated devices in combination with mold forming means.