ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,112, issued on May 20, was assigned to Compagnie Generale Des Etablissements Michelin (Clermont-Ferrand, France).
"Installation and method for coextrusion" was invented by Christophe Ougier (Clermont-Ferrand, France) and Arnaud Letocart (Clermont-Ferrand, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The installation is for producing a coextruded profiled element for tires that is made from rubber compounds of different compositions. The installation includes at least one first extruder having a screw with a longitudinal axis and at least one second extruder having a screw with a different longitudinal axis. An extrusion head is connected to...