US PATENT SUBCLASS 418 / 129
.~.~ With resilient biasing means

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

104  DF  WITH MECHANICAL SEALING {14}
125  DF  .~ Seal on cylinder engaging rotary member separates inlet and outlet ports {3}
129.~.~ With resilient biasing means

DEFINITION

Classification: 418/129

(under subclass 125) Apparatus in which there is provided an elastic biasing means to urge the expandable, movable,

adjustable or deformable means into engagement with the rotary member surface.