Patent ID: 7602271

Claim:
An electromagnetic actuator assembly comprising: a frame member having an outer sidewall, an inner sidewall and a first end wall that is coupled to the inner and outer sidewalls, the frame member defining an interior annular cavity; a coil assembly mounted in the annular cavity, the coil assembly including a core and a coil; a plunger having an annular intermediate wall and a second end wall that extends radially inwardly from the intermediate wall, the intermediate wall being disposed radially between the coil assembly and the outer sidewall; an armature that abuts the plunger; a sensor target coupled to one of the armature and the plunger; and a sensor mounted to the frame, the sensor being configured to directly sense a position of the sensor target and to produce a first sensor signal when the sensor target is moved in a first direction past a first position and the sensor is in a first state.