US PATENT SUBCLASS 60 / 660
.~ Having condition responsive control

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

643  DF  MOTIVE FLUID ENERGIZED BY EXTERNALLY APPLIED HEAT {11}
660.~ Having condition responsive control {6}
661  DF  .~.~> Of or by heat rejecting means or its bypass
662  DF  .~.~> Involving feed from source means to separate motor stages or utilizing means
663  DF  .~.~> Of branched feed to, condition of, or heating means for motive fluid between motor stages
664  DF  .~.~> Of or by heat source material or element {1}
666  DF  .~.~> Of bypass of superheater or desuperheater
667  DF  .~.~> Of means controlling boiler or its feed

DEFINITION

Classification: 60/660

(under subclass 643) Apparatus, including a means sensing an external condition or a condition of the system and controlling the system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

658, for apparatus in which damage to a heat receiving element is prevented by automatic means maintaining at least a minimum rate of flow.