US PATENT SUBCLASS 418 / 30
.~ By cylinder or cylinder portion pivotal movement

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

16  DF  WITH CHANGEABLE WORKING CHAMBER MAGNITUDE {10}
30.~ By cylinder or cylinder portion pivotal movement

DEFINITION

Classification: 418/30

(under subclass 16) Apparatus in which the cylinder or segment thereof is hingedly connected for swinging movement to thereby vary the volumetric capacity of the working chamber.