US PATENT SUBCLASS 209 / 728-- .~.~.~.~.~ Plural individual interconnected, oppositely directed axial flow producing separation phases (e.g., system arrangements, multiple hydrocyclones, etc.)

US PATENT SUBCLASS 209 / 728
.~.~.~.~.~ Plural individual interconnected, oppositely directed axial flow producing separation phases (e.g., system arrangements, multiple hydrocyclones, etc.)

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

DEFINITION

Classification: 209/728

Plural individual interconnected, oppositely directed axial flow producing separation phases (e.g., system arrangements, multiple hydrocyclones, etc.):

(under subclass 727) Methods and apparatus employing multiple, discrete separating means associated in an operative configuration wherein each separating means produces coaxial, counter traveling spiral currents about a reduced pressure or vacuum central region.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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

727, for combinations of hydrodynamic extraction separation and a hydrocyclone separator.

SEE OR SEARCH CLASS

55, Gas Separation,

346+, for plural parallely connected gas separators for indiscriminate solids removal from a gaseous suspension. See (3) Note Class 209 subclass 132. 95, Gas Separation: Processes, appropriate subclasses, for analogous methods for indiscriminate removal of solids from gaseous suspension. See (3) Note in Class 209

132,.

210, Liquid Purification or Separation,

787+, for processes and subclasses 512.1+ for apparatus employing cyclonic or centrifugal force effects for indiscriminately removing solids from a liquid suspension. See (3) Note in Class 209 subclass 132.