Patent ID: 8292115

Claim:
A fuel tank comprising: an insert ring mounted on a resin-made fuel tank body, the insert ring comprising an annular body having a first seat surface with boss holes for mounting a fuel pump, the boss holes being arranged closer to an outer periphery of the annular body than to an inner periphery of the annular body; a first resin material adhered around the insert ring above the first seat surface by injection molding to form an insert molded body, the boss holes and the first seat surface of the insert ring remaining exposed, wherein the first resin material of the insert molded body includes an inner peripheral stepped portion disposed under an inner peripheral flange of the insert ring, and an outer peripheral stepped portion disposed under an outer peripheral flange of the insert ring, the inner and outer peripheral stepped portions forming a second seat surface which rests on an upper surface of a flange portion of the fuel pump, wherein the insert molded body is inserted into an outer surface of the fuel tank body by insert molding using a second resin material which forms the fuel tank body, and wherein the first and second seat surfaces are substantially coplanar with a bottom portion of the fuel tank body.