US PATENT SUBCLASS 62 / 538
.~.~ Solidifying or purifying in a pulsed column or using sonic vibration

Current as of: June, 1999
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62 /   HD   REFRIGERATION

56  DF  PROCESSES {28}
532  DF  .~ Fractionally solidifying a constituent and separating the same {8}
538.~.~ Solidifying or purifying in a pulsed column or using sonic vibration {1}
539  DF  .~.~.~> With control of pulsed column process parameter

DEFINITION

Classification: 62/538

(under subclass 532) Processes wherein a solution or mixture of constituents is cooled sufficiently to solidify a constituent which is then removed from the mixture wherein the zone in which solidification or purification of the solid occurs is subjected to a regular or rhythmical increase and decrease in pressure or to vibration in the sonic range.

(1) Note. The pulsation of the processes of this subclass are typically produced by a reciprocating piston in a line to or from a vessel or in some cases forming all or part of a wall of a vessel.