Fluid impeller
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United States of America Patent
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-
Apr 15, 2003
Grant Date -
N/A
app pub date -
Aug 2, 2000
filing date -
Aug 10, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fluid impeller, such as a fan for moving air or gases, includes one or more rotatable fluid impelling blades; a flow guiding member adjacent to an edge of the blades, and at least one blade facing surface of the flow guiding member being formed substantially as a segment of a sphere of radius r.sub.1 about a center of curvature. Each blade has a flow guiding member abutting edge curved substantially to fit against a sphere of radius r.sub.1.
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