US PATENT SUBCLASS 418 / 97
.~ Non-working and working fluids intermix in working chamber

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}
97.~ Non-working and working fluids intermix in working chamber {2}
98  DF  .~.~> Non-working fluid initially directed to shaft bearing
99  DF  .~.~> Non-working fluid initially directed to working member

DEFINITION

Classification: 418/97

(under subclass 83) Apparatus in which the nonworking fluid enters the working chamber of the device to mix with the working fluid therein either (1) by directly conducting the nonworking fluid to the working chamber or (2) by the leakage or flow of the nonworking fluid thereto after being initially directed to another part of the device.