US PATENT SUBCLASS 418 / 91
.~ Non-working fluid passage in inner working or reacting member

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}
91.~ Non-working fluid passage in inner working or reacting member {3}
92  DF  .~.~> With non-working fluid passage in partition
93  DF  .~.~> Non-working fluid biases vane
94  DF  .~.~> With non-working fluid passage in drive shaft

DEFINITION

Classification: 418/91

(under subclass 83) Apparatus in which an inner working or reacting member is provided with a flow path or passageway for conducing nonworking fluid therethrough.

(1) Note. The working and nonworking fluid may be intermixed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

101, for rotary expansible chamber devices having a central passage therethrough open to the atmosphere combined with ambient air impelling means to move the air through the passage for removing heat generated in the operation of the device. However, similar devices in which the working member has at least one passage portion extending generally radially so that air passing therethrough is caused to approach the working member circumferentially periphery to remove heat therefrom are classified here.