Patent ID: 7111480

Claim:
A method of moving a lock bolt between a locked and engaged position with respect to a steering column and an unlocked and disengaged position with respect to the steering column, the method comprising: actively driving a cam with a motor, the cam including a first surface, a second surface, and a third surface; moving the lock bolt from the locked position toward the unlocked position at a first rate of retraction, the first rate of retraction determined by the first surface; accelerating retraction of the lock bolt from the first rate of retraction to a second rate of retraction as the lock bolt is moved toward the unlocked position, the second rate of retraction determined by the second surface; and decelerating retraction of the lock bolt from the second rate of retraction to a third rate of retraction as the lock bolt becomes fully disengaged from the steering column, the third rate of retraction determined by the third surface.