US PATENT SUBCLASS 100 / 90
.~ Separating materials (vacuumizing here)


Current as of: June, 1999
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100 /   HD   PRESSES

70 R  DF  WITH ADDITIONAL TREATMENT OF MATERIAL {6}
90.~ Separating materials (vacuumizing here) {1}
91  DF  .~.~> Plural solids


DEFINITION

Classification: 100/90

(under subclass 70) Apparatus in which the means to subject the material compacted to additional treatment includes means for removing one substance from another.

(1) Note. The substance removed may be air. In this subclass may be found, for example, presses having means subjecting the space between the platens to a vacuum to remove air from between layers of the material being pressed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

104+, for presses including means for collecting or a duct for transferring liquid coming from the material pressed as a result of the application of compressing force.

218, for reciprocating platen presses having means to remove the compacted material from the surface which supported it during the compacting operation.

SEE OR SEARCH CLASS 53, Package Making,

79+, for package evacuating and sealing.

68, Textiles: Fluid Treating Apparatus,

18, for machines combined with means to reclaim and reuse a solvent.

241, Solid Material Comminution or Disintegration,

68, for comminutors with means for separation or classification of material.

425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

197+, for apparatus to shape plastic material and having an upstream straining or homogenizing screen.