ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,901, issued on Dec. 16, was assigned to Safran Aircraft Engines (Paris).
"Variable pitch fan" was invented by Paul Ghislain Albert Levisse (Moissy-Cramayel, France) and Olivier Belmonte (Moissy-cramayel, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a device comprising a fixed actuator for a control system for the orientation of fan blades of a turbomachine, comprising: at least one actuator body housed inside an annular casing of the turbomachine forming a bearing support, the annular casing being centred on a longitudinal axis of the turbomachine an inclined relative thereto, the actuator body having an internal vo...