ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,719, issued on Feb. 3, was assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN (Clermont-Ferrand, France).
"Tire tread comprising complex grooves and incisions" was invented by Walid Djabour (Clermont-Ferrand, France) and Houria Belarbi (Clermont-Ferrand, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tire tread (1) having a tread pattern depth Hm, with at least two longitudinally oriented grooves (31, 41, 42), at least one of them being a complex groove (31), that in the new state, is alternately external cavities (311) that open onto the tread surface and internal cavities (312) that are hidden within the thickness of the tread. The...