US PATENT SUBCLASS 454 / 101
.~.~.~.~ Wind-operated fan


Current as of: June, 1999
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454 /   HD   VENTILATION

69  DF  VEHICLE (E.G., AUTOMOBILE, ETC.) {15}
83  DF  .~ Railcar, bus, or trailer {10}
99  DF  .~.~ Having forced recirculation {1}
100  DF  .~.~.~ Having forced recirulation means alone {2}
101.~.~.~.~ Wind-operated fan


DEFINITION

Classification: 454/101

Wind-operated fan:

(under subclass 100) Subject matter comprising a device for adding energy to and moving the air, which device is driven by moving air.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15, for a wind-operated fan associated with chimney or stacktop structure.

106, for other railcar, bus, or trailer wind-operated fans associated with an inlet and outlet airway.

113, for other railcar, bus, or trailer wind-operated fans associated with an inlet airway only.

117, for a railcar, bus, or trailer having a wind-operated fan associated with an outlet airway.

240, for a wind-operated air pump associated with a building having both an inlet and an outlet airway.