US PATENT SUBCLASS 454 / 113
.~.~.~.~ Wind operated


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}
107  DF  .~.~ Having inlet airway {4}
112  DF  .~.~.~ With air pump {2}
113.~.~.~.~ Wind operated


DEFINITION

Classification: 454/113

Wind operated:

(under subclass 112) Subject matter wherein the air moving apparatus is driven by moving air.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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

101, for a wind-operated fan in a railcar, bus, or trailer used for forced recirculation.

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

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