US PATENT SUBCLASS 209 / 722
.~.~.~.~ Fluidically induced unidirectional swirling (e.g., axial, radial, tangential separation, free-vortex, 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}
722.~.~.~.~ Fluidically induced unidirectional swirling (e.g., axial, radial, tangential separation, free-vortex, etc.) {1}
723  DF  .~.~.~.~.~> Plural extractions at diverse locations along flow path

DEFINITION

Classification: 209/722

Fluidically induced unidirectional swirling (e.g., axial or radial or tangential separation, free-vortex, etc.):

(under subclass 143) Methods and apparatus wherein a rotary stream is generated solely due to the configuration of the flow path for movement in a continuous direction along or about the rotational axis from an inlet toward an outlet to promote deposition of entrained or suspended material 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.

710, for plural, individual and distinct, fluidically induced unidirectional swirling separating means or a combination including other rotary stream gaseous suspension separating means.

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

SEE OR SEARCH CLASS

55, Gas Separation,

434+, for a gas separation device involving deflection of the gas flow to effect a separation. See (3) Note in Class 209 subclass 132 and (1) Note in Class 209 subclass 155.

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 and (1) Note in Class 209 subclass 155.

210, Liquid Purification or Separation, appropriate subclasses, for analogous subject matter for liquid-solid separation. See (3) Note under Class 209

132, and (1) Note in Class 209 subclass 155.