US PATENT SUBCLASS 165 / 212
.~.~.~ Central temperature conditioned air supplied to each zone

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

200  DF  WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14}
201  DF  .~ Having heating and cooling capability {13}
205  DF  .~.~ Plural temperature regulators for plural zones {8}
212.~.~.~ Central temperature conditioned air supplied to each zone {4}
213  DF  .~.~.~.~> Mixing within zone of recirculated zone air and supply air adjacent zone air inlet (e.g., induction unit, etc.) {1}
215  DF  .~.~.~.~> Reheat adjacent zone air inlet
216  DF  .~.~.~.~> Mixing of separate centrally supplied hot and cold stream before discharge into each zone (e.g., dual-duct, etc.)
217  DF  .~.~.~.~> Volume flow of discharged air at discharge into zone modulated by zone heating or cooling load (e.g., variable air volume, etc.)

DEFINITION

Classification: 165/212

Central temperature conditioned air supplied to each zone:

(under subclass 205) Subject matter including a common air supply source capable of supplying heated or cooled air from the heating and cooling system to each of said distinct areas.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

1, for zone control for heating and cooling medium; subclass 49.3 for electrically actuated ventilator; and subclass 49.4 for pneumatically actuated ventilator.