US PATENT SUBCLASS 162 / 370
.~.~.~.~.~.~ Plural suction areas

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}
363  DF  .~.~ Suction devices {6}
367  DF  .~.~.~ Traveling suction face {1}
368  DF  .~.~.~.~ Rotary pervious cylinder {2}
369  DF  .~.~.~.~.~ With non-rotating internal suction box {2}
370.~.~.~.~.~.~ Plural suction areas

DEFINITION

Classification: 162/370

(under subclass 369) Apparatus in which plural discrete chambers or a single partitioned chamber bears against the inner peripheral wall of the cylinder whereby more than a single suction area is applied to the inner wall.