US PATENT SUBCLASS 162 / 351
.~.~.~ Means retarding or controlling drainage through mold

Current as of: June, 1999
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162 /   HD   PAPER MAKING AND FIBER LIBERATION

232  DF  APPARATUS {22}
289  DF  .~ Running or indefinite length product forming and/or treating means {19}
348  DF  .~.~ Flexible endless band type mold (e.g., Fourdrinier) {5}
351.~.~.~ Means retarding or controlling drainage through mold {1}
352  DF  .~.~.~.~> Wire bottom scrappers or deflectors

DEFINITION

Classification: 162/351

(under subclass 348) Apparatus provided with means for regulating the quantity of fluid material passing through the foraminous forming surface.

(1) Note. Any structure which bears against the bottom of the wire will in some way effect the drainage of the water through the wire, as for example, the table roll structures aid in removing water from the bottom of the wire, however for the purpose of this classification a specific disclosure of the influence on the drainage must be recited for classification in this subclass. For details of table structure or wire supporting structure in which such disclosures are not present search must be made in subclasses 354+ below.

(2) Note. The devices of this subclass are positioned on the side of the wire away from the molding surface as distinguished from a mask or apron that is positioned on the molding surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

297, for pneumatic pressure or vacuum means acting directly on stock on mold surface.

353, for devices controlling the area of contact of the pulp with the mold surface and see (2) Note above.

363, for suction devices, per se.