US PATENT SUBCLASS 162 / 217
.~.~ Suction 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}
217.~.~ Suction through mold


DEFINITION

Classification: 162/217

(under subclass 202) Processes in which is recited a step of applying reduced pressure to the side of the foraminous mold to aid drawing the suspending medium through the pores of the mold.

SEE OR SEARCH THIS CLASS, SUBCLASS:

297, for apparatus applying suction directly to the slurry on the mold.

335, and 354+, for porous molds combined with suction means.

363+, for suction devices, per se, adapted for use in making paper.