US PATENT SUBCLASS 418 / 143
.~.~.~ On working member circumferential periphery

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

104  DF  WITH MECHANICAL SEALING {14}
140  DF  .~ Seal element between working member and cylinder {3}
142  DF  .~.~ On working member {1}
143.~.~.~ On working member circumferential periphery

DEFINITION

Classification: 418/143

(under subclass 142) Apparatus wherein the means opposing the passage of fluid is mounted or positioned on the working member circumferential surface.