US PATENT SUBCLASS 126 / 617
.~ With heat storage mass

Current as of: June, 1999
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126 /   HD   STOVES AND FURNACES

569  DF  SOLAR HEAT COLLECTOR {18}
617.~ With heat storage mass {3}
618  DF  .~.~> Phase change
619  DF  .~.~> Specific chemical
620  DF  .~.~> Rocks or soil

DEFINITION

Classification: 126/617

With heat storage mass:

(under subclass 569) Apparatus which further includes a quantity of solid material which is heated by the fluent medium during periods when solar radiation is received and which, in turn, liberates its heat at other periods of time.