US PATENT SUBCLASS 418 / 121
.~.~.~.~ Spring biased

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

104  DF  WITH MECHANICAL SEALING {14}
112  DF  .~ Seal on working member periphery separates inlet and outlet ports {1}
113  DF  .~.~ Seal on working member peripheral projection engages cylinder working chamber surface (e.g., apex seals) {9}
120  DF  .~.~.~ With axially movable side seal {1}
121.~.~.~.~ Spring biased

DEFINITION

Classification: 418/121

(under subclass 120) Apparatus in which the movable, expandable, adjustable or deformable means is positively urged to engage a cylinder working chamber side surface by means of a resilient, deformable, mechanical device.