Patent ID: 6851922

Claim:
A flow pump for pumping fuel from a fuel tank to an internal combustion engine of a motor vehicle, comprising an impeller ( 10 ) driven to revolve about a pivot axis ( 14 ) in a pump chamber ( 12 ), a ring of blades ( 16 ) on at least one face end of the impeller ( 10 ) and spaced apart from one another in the circumferential direction, the blades ending at the face end ( 44 ) of the impeller ( 10 ) and which between them define blade chambers ( 20 ), in the pump chamber ( 12 ), at least one feed conduit ( 34 ) in the pump chamber ( 12 ), the feed conduit being in the form of a split ring that cooperates with the ring of blades ( 16 ) on the impeller ( 10 ), at least one intake opening ( 36 ) discharging into the feed conduit ( 34 ) embodied in a pump chamber wall ( 30 ) that defines the pump chamber ( 12 ) in the direction of the pivot axis ( 14 ) of the impeller ( 10 ), at least one outlet opening ( 40 ) discharges into the pump chamber ( 12 ), the feed conduit ( 34 ), in an initial region at the at least one intake opening ( 36 ) and/or in the circumferential direction ( 11 ) of the impeller ( 10 ), adjoining the impeller, extends radially farther inward than the blade chamber bottom ( 22 ) of the impeller ( 10 ); and the transition between a radially inner blade chamber bottom ( 22 ) of the blade chambers ( 20 ) and the associated face end ( 44 ) of the impeller ( 10 ) having a chamfer ( 46 ) or rounded corner ( 48 ).