Patent ID: 7258281

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 an end face of the pole piece, the armature assembly having a closure member reciprocable along the longitudinal axis; a metering assembly having a seat surface secured to a polymeric support member, the polymeric support member including a pocket disposed about the longitudinal axis; and a guide member disposed in the pocket, the guide member including a wall portion and a base portion, the wall portion contiguous to an inner surface of the polymeric support member, the base portion having an aperture spaced from the seat surface to guide the closure member along the longitudinal axis between a first position with the closure member contiguous to the seat surface and a second position spaced from the seat surface.