US PATENT SUBCLASS 209 / 715
.~.~.~.~ Fluidically induced, oppositely directed axial flows (e.g., reverse free-vortexes formed, cyclone, 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.~.~.~.~ Fluidically induced, oppositely directed axial flows (e.g., reverse free-vortexes formed, cyclone, etc.) {4}
716  DF  .~.~.~.~.~> Including auxiliary fluid
717  DF  .~.~.~.~.~> Including inlet characteristic (e.g., helix, spiral, volute, etc.) {2}
720  DF  .~.~.~.~.~> Including specific underflow outlet feature (e.g., apex discharge, etc.)
721  DF  .~.~.~.~.~> Including specific overflow outlet feature (e.g., adjustable vortex finder, shape, size, etc.)

DEFINITION

Classification: 209/715

Fluidically induced, oppositely directed axial flows (e.g., reverse free-vortexes formed, cyclone, etc.):

(under subclass 143) Methods and apparatus wherein coaxial, counter traveling spiraling streams are generated solely due to the configuration of the flow path to effect separation of entrained or suspended material from the gaseous suspension into overflow and underflow fractions due to resultant centrifugal or centripetal forces.

(1) Note. The preceding subclasses which involve gaseous suspension and deposition should be searched for the separation of entrained or suspended material subjected to a suspending and classifying action of an impinging gaseous current or a combination therewith.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.1+, for combinations of diverse types of separating operations including gaseous suspension separation classifiable in this subclass or those indented hereunder.

711+, for plural, individual and distinct, interconnected fluidically generated counter-current flow separator devices.

727+, for analogous subject matter for liquid suspension separation. See (1) Note in Class 209 subclass 155.

SEE OR SEARCH CLASS 55, Gas Separation, appropriate subclasses, for indiscriminate removal of entrained or suspended material; particularly,

447+, for a gas separation device involving deflection of the gas flow by a static member to effect a separation. See (3) Note in Class 209 subclass 132.

95, Gas Separation: Processes,

267+, for a gas separation process involving deflection to create a swirling motion. See (3) Note in Class 209 subclass 132.

210, Liquid Purification or Separation,

512.1+, for a cyclonic device for indiscriminate solids removal from a liquid suspension; and subclasses 787+ for a cyclonic process of liquid-solid separation. See (3) Note in Class 209 subclass 132.