Patent ID: 7066711

Claim:
A feed pump in particular a fuel pump, with a driven impeller ( 7 , 24 ) rotating between two casing parts and carrying guide vanes delimiting at least one ring of vane chambers, with a part-annular channel arranged in the region of the vane chambers in the casing parts and extending from an inlet duct to an outlet duct, and with a fixed molding manufactured from a harder material than the impeller ( 7 , 24 ) arranged on the outer circumference of the impeller, the molding having a recess adjacent to the part-annular channel, characterized in that the guide vanes ( 9 , 30 ) project into the recess ( 11 , 31 ) of the molding ( 8 , 25 ) and are located with a slight clearance opposite the wall of the recess ( 11 , 31 ).