Patent ID: 7318703
Filing Date: 2008-01-15
Classification: B29L,F04D

Abstract:
1. An impeller for a cooling water pump of an internal combustion engine, comprising a hub, a cover disk which is disposed on an intake side of the impeller and is provided with a central opening for sucking in a conveyed medium, and a plurality of blades which are joined integrally with the cover disk and are provided with an inner section located in the region of the central opening and an outer section located in the region of the cover disk, said impeller being provided with a completely open configuration on a pressure side of the impeller opposite the cover disk and the blades are shaped at least in said inner section with a three-dimensional curvature and in said outer section with a substantially two-dimensional curvature, wherein an axial projection is provided on the cover disk in the region of the central opening, which projection projects in the direction of the intake side, and wherein one blade on the intake side is flush with a front edge of the axial projection.