US PATENT SUBCLASS 165 / 244
.~.~ Means to control fan or pump to regulate supply air flow or supply water flow

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}
244.~.~ Means to control fan or pump to regulate supply air flow or supply water flow {3}
245  DF  .~.~.~> Low flow during heating and high flow during cooling
246  DF  .~.~.~> Responsive to pressure
247  DF  .~.~.~> Responsive to temperature

DEFINITION

Classification: 165/244

Means to control fan or pump to regulate supply air flow or supply water flow:

(under subclass 201) Subject matter wherein the system supplies air by a fan or water by a pump to heat or cool said area; and wherein means is provided to alter a characteristic of the fan or pump (e.g., fan speed, volume, etc.) to control the rate at which air or water is delivered to said area.

SEE OR SEARCH THIS CLASS, SUBCLASS:

50, for room heat exchangers with central fluid supply.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

49.3, for an electrically actuated ventilator.

417, Pumps,

1+, for condition responsive control of pump drive motor.