US PATENT SUBCLASS 162 / 373
.~.~.~ Roller face (suction not through rollers)

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}
373.~.~.~ Roller face (suction not through rollers)

DEFINITION

Classification: 162/373

(under subclass 363) Apparatus in which the contact surface of the suction device comprises at least one solid impermeable cylindrical member mounted for rotation about it symmetrical axis.

(1) Note. In this subclass the suction is not through the rollers but between the rollers, the rollers being nonpervious. Subclasses 368+ provides for suction devices utilizing a pervious cylinder.

SEE OR SEARCH THIS CLASS, SUBCLASS:

368+, and see (1) Note above.