ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,224, issued on Feb. 24, was assigned to SAFRAN (Paris).
"Blade or vane with a root made by crossing weft yarns" was invented by Vincent Joudon (Moissy-Cramayel, France), Yann Didier Simon Marchal (Moissy-Cramayel, France), Marc-Antoine Andre Louis Colot (Moissy-Cramayel, France), Dominique Marie Christian Coupe (Moissy-Cramayel, France) and Francois Charleux (Moissy-Cramayel, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a propeller blade or vane made of composite material, includes making a single-piece fibrous blank by three-dimensional weaving between warp yarns and weft yarns, including an airfoil part and a ro...