ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,220,292, issued on Feb. 11.
"Powered toothbrush with complex movement" was invented by Macksoud Khan (Palo Alto, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present invention comprise a powered toothbrush comprising a bristle head, an outer gear, and a plurality of bristles. Both the bristle head and the outer gear may comprise a distal end, a proximal end, and a center. The distal end of the bristle head may mate with the proximal end of the outer gear. The outer gear may rotate about a first axis of rotation. The mating between the bristle head and the outer gear may cause the bristle head to orbit the first axis of rotati...