US PATENT SUBCLASS 209 / 721
.~.~.~.~.~ Including specific overflow outlet feature (e.g., adjustable vortex finder, shape, size, etc.)

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

132  DF  FLUID SUSPENSION {2}
133  DF  .~ Gaseous {7}
142  DF  .~.~ Grading deposition {1}
143  DF  .~.~.~ With deflection {4}
715  DF  .~.~.~.~ Fluidically induced, oppositely directed axial flows (e.g., reverse free-vortexes formed, cyclone, etc.) {4}
721.~.~.~.~.~ Including specific overflow outlet feature (e.g., adjustable vortex finder, shape, size, etc.)

DEFINITION

Classification: 209/721

Including specific overflow outlet feature (e.g., adjustable vortex finder, shape, size, etc.):

(under subclass 715) Methods and apparatus provided with details of a passage formation for discharge of lighter or smaller constituent that is contained in an inner spiraling stream.

(1) Note. A nominal recitation of an overflow outlet or a vortex finder, per se, is not sufficient for proper classification in this subclass. However, a nominal recitation of an attribute of such overflow outlet or vortex finder is proper for classification in this subclass; e.g., a named "vortex finder" is not proper for classification in this subclass whereas a named "adjustable vortex finder" is properly classified in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

732, for analogous subject matter involving liquid

suspension. See (1) Note in Class 209 subclass 155.

SEE OR SEARCH CLASS

55, Gas Separation, appropriate subclass under

434+, for a gas separation device including outlet passage formations for purified gas. See (3) Note in Class 209 subclass 132. 95, Gas Separation: Processes,

267+, for gas separation methods involving deflection. See (3) Note in Class 209 subclass 132

210, Liquid Purification or Separation,

788, for processes and subclasses 512.1+ for apparatus for indiscriminate liquid-solid separation. See (3) Note in Class 209 subclass 132 and (1) Note in Class 209 subclass 155.