ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,739, issued on Dec. 9, was assigned to SUMITOMO RUBBER INDUSTRIES LTD. (Kobe, Japan).
"Tire" was invented by Yuto Hashimoto (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tire includes first blocks each with a zigzag first sipe. The first sipe includes a sipe bottom and a tie-bar locally raising outwardly in a tire radial direction from the sipe bottom so as not to reach the ground contact surface to divide the first sipe into first and second portions. The sipe bottom of the first portion communicates with a first widening portion which has a circular cross-section and has a groove width greater than that of the first portion. The fir...