US PATENT SUBCLASS 209 / 734
.~.~.~.~.~ Including specific inlet feature (e.g., shape, size, etc.)

Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

132  DF  FLUID SUSPENSION {2}
155  DF  .~ Liquid {5}
208  DF  .~.~ Grading deposition {4}
725  DF  .~.~.~ Rotational hydrodynamic extraction (e.g., unidirectional hydrocyclone, vortical, whirlpool, etc.) {2}
727  DF  .~.~.~.~ Including oppositely directed axial flows around evacuated core (e.g., hydrocyclone having reverse free-vortexes formed, etc.) {5}
734.~.~.~.~.~ Including specific inlet feature (e.g., shape, size, etc.)

DEFINITION

Classification: 209/734

Including specific inlet feature (e.g., shape, size, etc.):

(under subclass 727) Methods and apparatus having details of a passage formation for delivering the liquid suspension.

(1) Note. The mere recitation of a particular infeed feature, such as a "tangential", without further attribute is not proper for classification in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

717+, for analogous subject matter involving gaseous suspension separation. See (1) Note in Class 209 subclass 155.

724, for passage formation details when delivering material, as particulate, pulp, slurry or suspension, to a circularly flowing liquid separation agent.

725, for passage formation details when feeding the liquid

suspension in a manner to create a swirling current without the creation of coaxial, counter traveling spiral currents.

730+, for secondary fluid passage formation details. CROSS-REFERENCE ART COLLECTIONS