US PATENT SUBCLASS 162 / 363
.~.~ Suction devices

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.~.~ Suction devices {6}
364  DF  .~.~.~> Systems
365  DF  .~.~.~> Reciprocating
366  DF  .~.~.~> Adjustable width
367  DF  .~.~.~> Traveling suction face {1}
373  DF  .~.~.~> Roller face (suction not through rollers)
374  DF  .~.~.~> Wear face structures and materials

DEFINITION

Classification: 162/363

(under subclass 289) Apparatus provided with means operating on the web at a reduced pressure relative to atmospheric pressure for the purpose of dewatering the moist slurry web.

(1) Note. The devices of this and the indented subclasses are not forming molds, or molds in combination with suction applying means, but are rather the suction means, per se, which may or may not be disclosed as acting through a forming mold. Thus, the devices may act on the moist web either on the forming mold, or after removal from the mold.

SEE OR SEARCH THIS CLASS, SUBCLASS:

252, for suction means having an automatic control feature.

278, and 279, for apparatus conditioning devices including means to apply suction to the apparatus being conditioned.

297, for vacuum means acting directly on the stock on the mold surface.

335, for cylinder molds combined with drain or suction means. 351, for flexible endless band type molding devices having drainage control means for white water.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

300.1+, for cleaning machines of the suction type.