Patent ID: 6503049
Filing Date: 2003-01-07
Classification: F04D

Abstract:
A feed pump for feeding one of fuel and windshield washing fluid, comprising:a casing; a driven shaft; an impeller arranged on said driven shaft so that said impeller is fixed with respect to rotation relative to said driven shaft, said impeller being arranged in said casing such that a slight clearance is arranged between a portion of said impeller and said casing for forming sealing gaps between said portion of said impeller and said casing, said impeller having a radially outer region and a radially inner region and said radially outer region being movable in at least one of a pivoting direction relative to said driven shaft about an axis transverse to said driven shaft and an axial direction relative to said radially inner region of said impeller, said impeller comprising a depression in a region of said impeller proximate said driven shaft, said depression surrounding said shaft.