US PATENT SUBCLASS 209 / 711
.~.~.~.~.~ Fluidically induced, oppositely directed axial flows only (e.g., multiple cyclone arrangements, 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}
710  DF  .~.~.~.~ Plural individual interconnected separation means having swirling currents {1}
711.~.~.~.~.~ Fluidically induced, oppositely directed axial flows only (e.g., multiple cyclone arrangements, etc.) {1}
712  DF  .~.~.~.~.~.~> Serial arrangement

DEFINITION

Classification: 209/711

Fluidically induced, oppositely directed axial flows only (e.g., multiple cyclone arrangements, etc.):

(under subclass 710) Methods and apparatus wherein, in each of the separating phases, coaxial, counter traveling spiraling streams are established to effect separation of entrained or suspended material from the gaseous suspension into overflow and underflow fractions due to resultant centrifugal or centripetal forces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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

SEE OR SEARCH CLASS

55, Gas Separation,

338+, for a continuous gas flow path with a recirculation of the separated gas to the inlet of the system; and subclasses 346+ for plural parallely connected gas separators each employing a rotary current. See (3) Note in Class 209 subclass 132.

95, Gas Separation: Processes, 267+, for method of separation or purification of a gaseous suspension employing centrifugal or centripetal forces

210, Liquid Purification or Separation,

512.2, for plural cyclonic devices for indiscriminately removing solids from a liquid suspension; and subclasses 787+ for a cyclonic process of liquid-solid separation. See (3) Note in Class 209 subclass 132.

406, Conveyors: Fluid Current,

173, for a cyclone separator employed as a fluid conveyor outlet means.