US PATENT SUBCLASS 209 / 729
.~.~.~.~.~.~ Serially connected

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}
728  DF  .~.~.~.~.~ Plural individual interconnected, oppositely directed axial flow producing separation phases (e.g., system arrangements, multiple hydrocyclones, etc.) {1}
729.~.~.~.~.~.~ Serially connected

DEFINITION

Classification: 209/729

Serially connected:

(under subclass 728) Methods and apparatus wherein the total liquid suspension is treated sequentially through the multiple separating means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

712, for an analogous configuration employed for separating a gaseous suspension. See (1) Note in Class 209 subclass 155.

SEE OR SEARCH CLASS

55, Gas Separation, appropriate subclasses for analogous subject matter involving indiscriminate removal of entrained or suspended material from a gaseous suspension; particularly,

338+, for a continuous gas flow path with a recirculation of the separated gas to either (1) the inlet of the system or (2) to an inlet of one of the discrete separator devices in the serial arrangement; and subclass 345 for plural

sequentially connected gas separators each employing a rotary current. See (3) Note in Class 209 subclass 132.

210, Liquid Purification or Separation, 787+, for processes and subclass 512.2 for apparatus employing plural cyclonic or centrifugal force effects for indiscriminately removing solids from a liquid suspension. See (3) Note Class 209 in subclass 132.