US PATENT SUBCLASS 123 / 41.11
.~.~ Air impeller

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

41.01  DF  COOLING {27}
41.02  DF  .~ Automatic coolant flow control {4}
41.11.~.~ Air impeller {1}
41.12  DF  .~.~.~> Temperature-responsive

DEFINITION

Classification: 123/41.11

(under subclass 41.02) Devices wherein the primary or secondary coolant is air and the device for stopping, varying or starting the flow of air is an impeller or fan which is controlled by an automatic device.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

35+, for automatic air impellers which are used to cool radiators.

416, Fluid Reaction Surfaces (i.e., Impellers),

31+, for an impeller, per se, controlled by an automatic device.