Patent ID: 8156839
Filing Date: 2012-04-17
Classification: B60K,F16H,H02K,Y10T

Abstract:
1. An actuator comprising: a motor; a drive train coupled to said motor, said drive train having an output gear coupled to a first and a second lead screw; said first lead screw coupled to a drive nut and configured for driving said drive nut to a drive nut position between a first drive nut end of travel position and a second drive nut end of travel position when said motor is energized, said drive nut coupled to a plunger via a first and second spring, said second lead screw coupled to a magnet, said second lead screw configured for moving said magnet to a magnet position between a first magnet end of travel position and a second magnet end of travel position when said motor is energized, wherein said drive nut position corresponds to said magnet position; and at least one magnetic field sensor configured to provide an output in response to said magnet position, said output indicating said drive nut position; wherein said first and second lead screws are configured to simultaneously drive and move said drive nut and said magnet, respectively.