Fan, particularly for motor vehicles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 8, 1993
Grant Date -
N/A
app pub date -
Oct 23, 1991
filing date -
Oct 30, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The fan includes a bladed, centrifugal fan wheel and an electric motor with an external rotor which is foxed torsionally to the fan wheel. The motor includes a casing constituted by a stationary part with holes for taking in air from outside for ventilating the interior of the motor and a rotary part with holes which act as outlet ducts for the internal ventilation air. The cross-sections of the ducts decrease in the direction of the air-flow and open into the outside atmosphere in regions over which the air-flow induced by the fan wheel passes in operation.
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