Patent ID: 7314184

Claim:
A fuel injector comprising: a polymeric housing having a passageway extending between an inlet opening and an outlet opening along a longitudinal axis; a pole piece disposed in the passageway, the pole piece having a through opening; a filter assembly having a portion disposed in the through opening of the pole piece; a coil assembly disposed in the polymeric housing to surround the pole piece; a spring member disposed partly in the pole piece and including a spring portion contiguous with the portion of the filter assembly; an armature assembly disposed in the passageway in a first position confronting the pole piece and in a second position contiguous to a portion of an end face of the pole piece, the armature assembly having a closure member; and a metering assembly secured to the housing proximate the outlet, the metering assembly having a seat and a polymeric support member, the seat having at least one circumferential annular ridge molded to the polymeric support member.