Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 25, 2008
Patent Application Number
10978228
Date Filed
October 28, 2004
Patent Primary Examiner
Patent abstract
An improved centrifugal impeller having between 20 and 26 rearwardly curved blades blades, a ratio of blade annulus width to wheel radius between 0.31 and 0.37, and an inlet blade angle in the range 32° to 36° and a discharge blade angle in the range 36° to 40°.
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