Radial flow fan
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 31, 2000
Grant Date -
N/A
app pub date -
Apr 22, 1998
filing date -
Apr 22, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A radial flow fan wheel has a longitudinal axis and consists of an annular member and a plurality of first and second blade members. The first and second blade members depend from the annular member substantially parallel to the axis of the first blade members being disposed on a first pitch circle and the second blade member being disposed on a second pitch circle which has a radius less than a radius of the first pitch circle.
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