US PATENT SUBCLASS 162 / 369
.~.~.~.~.~ With non-rotating internal suction box

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.~.~.~.~.~ With non-rotating internal suction box {2}
370  DF  .~.~.~.~.~.~> Plural suction areas
371  DF  .~.~.~.~.~.~> Box carried seals

DEFINITION

Classification: 162/369

(under subclass 368) Apparatus in which the active suction area of the pervious cylinder consists of a restricted portion of the circumference of the cylinder, the restriction being caused by a confined suction producing chamber bearing against the inner walls of the rotary pervious cylinder.