US PATENT SUBCLASS 60 / 678
.~.~.~ Withdrawn fluid heats boiler feed indirectly

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}
677  DF  .~.~ Serially connected motor with intermotor supply or withdrawal of motive fluid {1}
678.~.~.~ Withdrawn fluid heats boiler feed indirectly

DEFINITION

Classification: 60/678

(under subclass 677) Apparatus, in which the vapor withdrawn from between the motor stages is passed in indirect heat exchange with liquid supplied to the vapor generator.