Patent 9766620 was granted and assigned to Sphero on September, 2017 by the United States Patent and Trademark Office.
A self-propelled device is provided including a drive system, a spherical housing, and a biasing mechanism. The drive system includes one or more motors that are contained within the spherical housing. The biasing mechanism actively forces the drive system to continuously engage an interior of the spherical housing in order to cause the spherical housing to move.