Patent ID: 7458530

Claim:
A fuel injector having a housing including an inlet, an outlet, and a passageway for fuel flow from the inlet to the outlet, the fuel injector comprising: a coil assembly disposed proximate the inlet of the fuel injector; a seat disposed proximate the outlet of the fuel injector; and a closure member disposed in the housing and operable by the coil assembly to permit and prohibit fuel flow through the seat, the closure member including: a sleeve extending along a longitudinal axis and having first and second ends, the sleeve including a recess and having an outer surface a first distance from the longitudinal axis; and an armature coupled to the first end of the sleeve so that the sleeve is movable with the armature, the armature having a first portion disposed in the recess of the sleeve and a second portion extending outwardly from the first end of the sleeve, the second portion having an outer perimeter a second distance from the longitudinal axis, the second distance not greater than the first distance.