US PATENT SUBCLASS 60 / 528
.~.~ Mass heated because of resistance to flow of electric current

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}
527  DF  .~ Mass is a solid {2}
528.~.~ Mass heated because of resistance to flow of electric current

DEFINITION

Classification: 60/528

(under subclass 527) Apparatus wherein the solid is arranged to conduct an electrical current whereby said solid may be made to expand or contract in proportion to the current flow therethrough.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems,

117, for a motor comprising a member that undergoes a substantial change of shape when heated and means for heating it electrically.