Patent ID: 7473069

Claim:
A fuel pump for a fuel tank of a motor vehicle, comprising: a casing with two impellers arranged rotatably therein and held at a distance from one another by a partition; and at least two rings of guide blades, which delimit blade chambers located opposite one another in one of the two impellers, arranged in two end faces of each of the two impellers, one of said guide blades concentrically surrounding another of said guide blades; wherein the blade chambers being connected to one another, and the casing defining part-annular channels located opposite the at least two rings of guide blades, for formation of two conveying chambers, one surrounding the other concentrically, for conveying fuel from an inlet duct to an outlet duct defined in the casing; and wherein conveying chambers of one of the two impellers have a connection to the conveying chambers of the other of the two impellers in the partition, the connection is radially arranged in a region of the two conveying chambers, and the conveying chambers of the one of the two impellers are connected to a common inlet duct and the conveying chambers of the other of the two impellers are connected to a common outlet duct.