ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,251, issued on May 20, was assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN (Clermont-Ferrand, France).
"Pneumatic tire tread for a heavy duty vehicle comprising stone-expelling and noise-preventing protuberances" was invented by Franck Nugier (Clermont-Ferrand, France) and Olivier Ropars (Clermont-Ferrand, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tire tread (1) for a heavy construction plant vehicle, and aims to improve both its ability to not retain stones in its voids, during off-road use, and its ability to dampen the noise that it generates, during on-road use. At least one longitudinal groove (6) of the tread (1) has a...