US PATENT SUBCLASS 60 / 519
.~.~ Expansible chamber having rotatable or oscillatory displacer

Current as of: June, 1999
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60 /   HD   POWER PLANTS

516  DF  MOTOR OPERATED BY EXPANSION AND/OR CONTRACTION OF A UNIT OF MASS OF MOTIVATING MEDIUM {3}
517  DF  .~ Unit of mass is a gas which is heated or cooled in one of a plurality of constantly communicating expansible chambers and freely transferable therebetween {9}
519.~.~ Expansible chamber having rotatable or oscillatory displacer

DEFINITION

Classification: 60/519

(under subclass 517) Apparatus in which at least one of said expansible chambers is provided with a member which either rotates or oscillates about an axis so that said chamber either expands or contracts as a result of motion of said member.