Patent ID: 7541712

Claim:
A fuel pump comprising: a hollow casing; a pump section disposed inside the casing; an electric motor for driving the pump section disposed inside the casing; a connector for connecting the electric motor to an external rower source, the connector having a terminal; a brush slidably contacted with a rotor of the electric motor so as to supply power to a coil of the rotor, the brush being contacted with the rotor from an axial direction of the rotor, the brush being disposed generally parallel with the axial direction of the rotor and extending along the axial direction of the rotor; a lead wire for electrically connecting the terminal of the connector to the brush, the lead wire being disposed between the brush and the connector; an electroplated layer of tin on a surface of the lead wire, the electroplated layer having a final-manufactured thickness within a range of from 0.4 to 1.5 μm; and a fuel port for allowing fuel to flow between an internal and external environment of the fuel pump; wherein the lead wire is more particularly a plurality of lead wires for electrically connecting the terminal of the connector to the brush, each of the lead wires being disposed outward from the fuel port in the radial direction of the fuel port between the brush and the connector; and wherein the electroplated layer of tin on the surface of each of the lead wires having a final-manufactured thickness within a range of from 0.4 to 1.5 μm.