US PATENT SUBCLASS 60 / 672
.~.~.~ Motor exhaust used in combustion zone

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

643  DF  MOTIVE FLUID ENERGIZED BY EXTERNALLY APPLIED HEAT {11}
670  DF  .~ Power system involving change of state {6}
671  DF  .~.~ Motive fluid comprises a material other than steam or water {3}
672.~.~.~ Motor exhaust used in combustion zone

DEFINITION

Classification: 60/672

(under subclass 671) Apparatus, in which the fluid motivating the motor is a reactive material that is fed to a combustion device after its expansion in the motor.