US PATENT SUBCLASS 418 / 228
AXIALLY MOVING VANE OR ABUTMENT

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

228AXIALLY MOVING VANE OR ABUTMENT {2}
229  DF  .~> Sliding {1}
233  DF  .~> Radially pivoted vane

DEFINITION

Classification: 418/228

(under the class definition) Apparatus in which a vane or abutment moves or has a component of movement in a direction along or parallel to the axis of rotation of the working member incident to the expansion and contraction of the working chamber.