US PATENT SUBCLASS 418 / 85
.~ With heat exchange means for non-working fluid

Current as of: June, 1999
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418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

83  DF  HEAT EXCHANGE OR NON-WORKING FLUID LUBRICATING OR SEALING {13}
85.~ With heat exchange means for non-working fluid

DEFINITION

Classification: 418/85

(under subclass 83) Apparatus wherein the nonworking fluid is itself heated or cooled by means specifically designed to either add or remove heat therefrom prior to its entry to the device or working parts thereof.