Circumferential ridge for a centrifugal fan
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United States of America Patent
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N/A
Issued Date -
Oct 17, 2002
app pub date -
Apr 12, 2001
filing date -
Apr 12, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An air impeller or circumferential fan includes one or more fan blades disposed between first and second plates. The first plate is tapered with respect to the second plate and includes an orifice that allows air to flow through the first plate and past the fan blades. The first plate also includes a circumferential ridge located away from the orifice which provides for more consistent construction of the first plate and, therefore, cheaper manufacturing of the air impeller.
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