Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Martin Stahle0
Date of Patent
March 31, 2009
0Patent Application Number
105887360
Date Filed
November 2, 2004
0Patent Primary Examiner
Patent abstract
A screw-centrifugal pump (1) comprises a pump housing (3) having an inlet opening (3c) and also an impeller (2) arranged within the pump housing (3) and rotatable about an axis of rotation (2d) in a direction of rotation (4a). The impeller (2) has a spirally extending blade entry edge (2a) and a guide vane (5) projects into the interior space of the impeller (2) and is disposed in the region of the inlet opening (3c). A method of conveying a liquid permeated with solid additions using such a pump is also described and claimed.
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