US Patent Issued to SAFRAN AIRCRAFT ENGINES on July 14 for "Hydraulic control circuit for controlling fan blade pitch" (French Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,533, issued on July 14, was assigned to SAFRAN AIRCRAFT ENGINES (Paris).

"Hydraulic control circuit for controlling fan blade pitch" was invented by Hugues Barbier (Moissy-Cramayel, France) and Sebastien Oriol (Moissy-Cramayel, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic control circuit of a double-acting orientation cylinder to orient fan blades of a turbojet engine. The control circuit includes an oil tank, a variable-displacement axial piston pump including a swash plate controlled by a control cylinder comprising a control chamber and by compensation cylinder comprising a compensation chamber. The pump is supplied by the ta...