US PATENT SUBCLASS 209 / 720-- .~.~.~.~.~ Including specific underflow outlet feature (e.g., apex discharge, etc.)

US PATENT SUBCLASS 209 / 720
.~.~.~.~.~ Including specific underflow outlet feature (e.g., apex discharge, 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	DF	.~.~.~.~ Fluidically induced, oppositely directed axial flows (e.g., reverse free-vortexes formed, cyclone, etc.) {4}
720		.~.~.~.~.~ Including specific underflow outlet feature (e.g., apex discharge, etc.)

DEFINITION

Classification: 209/720

Including specific underflow outlet feature (e.g., apex discharge, etc.):

(under subclass 715) Methods and apparatus provided with details of a passage formation for discharge of heavier or larger constituent that is contained in an outer spiraling stream.

(1) Note. A nominal recitation of an underflow outlet without further particulars is not proper for classification in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

733, for analogous subject matter involving liquid suspensions. See (1) Note in Class 209 subclass 155.

SEE OR SEARCH CLASS

55, Gas Separation,

435, for a gas separation device including wear liners or surface characteristics.

210, Liquid Purification or Separation, appropriate subclasses, for analogous subject matter for liquid-solid separation. See (3) Note in Class 209 132, and (1) Note in Class 209 subclass 155.