US PATENT SUBCLASS 162 / 211
.~.~ Inhibiting or restricting drainage through mold

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

100  DF  PROCESSES AND PRODUCTS {31}
202  DF  .~ Running or indefinite length work forming and/or treating processes (e.g., web) {6}
211.~.~ Inhibiting or restricting drainage through mold

DEFINITION

Classification: 162/211

(under subclass 202) Processes for forming an endless web by draining the suspending medium through a foraminous mold and controlling the rate of drainage of the medium.

(1) Note. Mere regular application of suction is not sufficient for classification in this subclass. See subclass 217 below for such subject matter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217, and see (1) Note above.

351, for apparatus having means retarding or controlling drainage.