US PATENT SUBCLASS 418 / 101
.~ With coolant air impelling means or finned cylinder surface

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}
101.~ With coolant air impelling means or finned cylinder surface

DEFINITION

Classification: 418/101

(under subclass 83) Apparatus in which there is provided either a means to produce and direct a current of air to a surface of the rotary expansible chamber device or a projection means on the cylinder surface for dissipating heat to the atmosphere whereby heat generated in the operation of the device is removed therefrom.