Patent ID: 8256313
Filing Date: 2012-09-04
Classification: F16H,Y10T

Abstract:
1. An actuator comprising: a motor; a gear train coupled to said motor, said gear train comprising a drive gear comprising a first gear portion and an integral drive nut portion, said first gear portion being meshingly engaged with a gear of said gear train for causing rotation of said drive gear when said motor is energized; a drive screw extending into a central opening in said integral drive nut portion of said drive gear, said drive screw comprising external threads meshingly engaged with corresponding internal threads of said integral drive nut portion of said drive gear, whereby said integral drive nut portion of said drive gear is configured to drive said drive screw to move linearly relative to said integral drive nut portion between a first position and a second position when said motor is energized; and a plunger coupled to said drive screw through at least one spring.