US PATENT SUBCLASS 418 / 52
.~ Working member common to plural working chambers

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

49  DF  NUTATING WORKING MEMBER {3}
52.~ Working member common to plural working chambers {1}
53  DF  .~.~> Axially spaced working chambers

DEFINITION

Classification: 418/52

(under subclass 49) Apparatus in which a single working member has opposed working surfaces, each of which forms a movable surface of a separate working chamber for expanding and contracting the working chamber.