ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,904, issued on April 29, was assigned to SAFRAN AIRCRAFT ENGINES (Paris).

"Blade and slotted rotor wheel for a gas turbine engine" was invented by Baptiste Dorian Lawniczek (Moissy-Cramayel, France), Didier Rene Andre Escure (Moissy-Cramayel, France) and Clementine Charlotte Marie Mouton (Moissy-Cramayel, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A blade includes a root to be mounted in a slot of plural slots which open out at an outer periphery of a rotor disk of a movable wheel of a low-pressure turbine of an aeronautical propulsion system, the rotor disk being centered on a longitudinal axis and the slots being circumferentially distri...