Fan blade
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 9, 2004
Issued Date -
N/A
app pub date -
Feb 19, 2003
filing date -
Apr 21, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention employs improved fan blade shapes to improve fan blade performance in one or more manners (i.e., increased fan efficiency, lower fan noise, greater fluid moving capability, and the like). In some embodiments, the fan blade has a front side, a rear side, an inner attachment portion, an outer edge, a curved leading edge and a curved trailing edge. The outer edge can define an arc between a forward position and a rearward position of the fan blade. In some embodiments, the leading edge extends outward and intercepts the arc of the outer edge at the forward position, and the trailing edge extends outward to the rearward position. Various angles, lengths, and other dimensions of the blade can have selected values to produce superior fan performance.
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