Patent ID: 7258282

Claim:
A fuel injector comprising: a 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 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; a metering assembly disposed proximate the outlet opening; and an armature assembly disposed in the passageway in a first position confronting the end face of the pole piece and in a second position contiguous to an end face of the pole piece, the armature assembly having a first wall having a first surface confronting the end face of the pole piece and a second wall extending along the longitudinal axis, the first wall extending from the second wall transverse to the longitudinal axis, the first and second walls having substantially the same thickness.