US Patent Issued to SAFRAN, SAFRAN SAFRAN AIRCRAFT ENGINES on Dec. 2 for "Propeller blade or airfoil with hollow composite root" (French Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,485,627, issued on Dec. 2, was assigned to SAFRAN (Paris) and SAFRAN SAFRAN AIRCRAFT ENGINES (Paris).

"Propeller blade or airfoil with hollow composite root" was invented by Pierre Jean Faivre D'Arcier (Moissy Cramayel, France), Clement Pierre Postec (Moissy Cramayel, France), Vincent Lionel Rene Maison (Moissy Cramayel, France) and Matteo Minervino (Moissy Cramayel, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A propeller blade or airfoil of a turboprop of composite material includes a fibrous reinforcement densified by a matrix, the propeller blade or airfoil including, in a span direction, a root and an aerodynamic profile. The fibrous reinfo...