Patent 7661506 was granted and assigned to Showa Corporation on February, 2010 by the United States Patent and Trademark Office.
In a motor-driven steering apparatus in which a handle stay provided with a steering handle is fixed to a steering shaft, and a motor-driven steering assist unit is interposed between the steering shaft and a tire wheel side steering member, and a taper coupling portion provided in the handle stay is coupled and fixed to a taper support portion provided in the steering shaft.