ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,218, issued on Nov. 11, was assigned to BRIDGESTONE Corp. (Tokyo).
"Tire" was invented by Shintaro Hayashi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "First and second groove walls 2a and 2b of a meandering main groove 21 have an upper and lower groove wall portion, respectively. The first groove wall 2a has the lower groove wall-top edge 2ale extending in a wavy line along the tire circumferential direction in order that a minimum groove wall angle portion and a maximum groove wall angle portion appear alternately. In the first groove wall 2a, the minimum groove wall angle portion and a wide groove section, and the maximum groove wall ang...