Patent ID: 6641361
Filing Date: 2003-11-04
Classification: F04D

Abstract:
An impeller for a fuel pump for supplying fuel to an automotive engine from a fuel tank comprising:an impeller body having a substantially disk shape with an input side, an output side and an outer circumference; a plurality of vanes having a front side and a back side and extending radially outward from said outer circumference of said impeller body with a plurality of partitions interposed therebetween extending a radially shorter distance than said vanes, said partitions and said vanes defining a plurality of vane grooves; said vanes including a root which is adjacent said impeller body and a distal end, said vanes having a thickness which varies such that said vanes are thickest at said root and gradually become thinner as said vanes extend outward to said distal end; a ring portion fitted around an outer circumference of said impeller and connected to said distal ends of said plurality of vanes such that a plurality of extending fuel flow passages are formed between said vanes, said partitions, and said ring portion.