Flexible impeller apparatus and method
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United States of America Patent
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Apr 17, 2012
Grant Date -
Jul 16, 2009
app pub date -
Oct 22, 2008
filing date -
Oct 22, 2007
priority date (Note) -
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Abstract
Embodiments of the invention provide an impeller assembly having a flexible impeller and a method of replacing a removable drive mechanism. The impeller assembly includes an impeller having an outer portion defining a substantially cylindrical shape, at least one flexible blade extending radially outward from the outer portion, and a first bore extending a first axial length. The impeller assembly also includes a tubular insert supported at least partially within the first bore. The tubular insert has a second bore defining a substantially cylindrical shape with a first radial distance from an axis passing through the center of the impeller, and a key portion radially extending from the second bore. The key portion defines a second radial distance from the axis larger than the first radial distance.
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