US PATENT SUBCLASS 415 / 179
.~.~ Interstage heat exchanger

Current as of: June, 1999
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415 /   HD   ROTARY KINETIC FLUID MOTORS OR PUMPS

177  DF  INCLUDING HEAT INSULATION OR EXCHANGE MEANS (E.G., FINS, LAGGING, ETC.) {2}
178  DF  .~ Working fluid on at least one side of heat exchange wall {1}
179.~.~ Interstage heat exchanger

DEFINITION

Classification: 415/179

(under subclass 178) Apparatus in which the heat exchange barrier is intermediate two sets of blades*, the barrier serving to transfer heat to or from the working fluid* as it passes from one set to the next succeeding.