US PATENT SUBCLASS 162 / 368
.~.~.~.~ Rotary pervious cylinder

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.~.~.~.~ Rotary pervious cylinder {2}
369  DF  .~.~.~.~.~> With non-rotating internal suction box {2}
372  DF  .~.~.~.~.~> Shell structure

DEFINITION

Classification: 162/368

(under subclass 367) Apparatus in which the moving suction device is a cylinder mounted for rotation about its axis and the permeable surface is the circumferential surface of the cylinder.

SEE OR SEARCH THIS CLASS, SUBCLASS:

357, for rotary pervious cylinder structures which are cylinder molds, that is, adapted to accrete a layer of pulp on the surface thereof.