US Patent Issued to SAFRAN HELICOPTER ENGINES on Sept. 30 for "Propulsion unit with foldable propeller blades and method for folding the blades" (French Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,130, issued on Sept. 30, was assigned to SAFRAN HELICOPTER ENGINES (Bordes, France).

"Propulsion unit with foldable propeller blades and method for folding the blades" was invented by Jean-Louis Robert Guy Besse (Moissy-Cramayel, France) and Camel Serghine (Moissy-Cramayel, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A propulsion unit with a propeller is provided, having a nacelle and a propeller rotatably mounted in the nacelle by a hub. The propeller includes blades mounted in a blade cuff pivotable about a pitch axis relative to the hub, each blade being pivotable relative to the cuff about a folding axis. The propulsion unit can furth...