US Patent Issued to SAFRAN AIRCRAFT ENGINES on Jan. 13 for "Hydraulic control circuit for controlling fan blade pitch" (French Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,347, issued on Jan. 13, 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 vanes of a turbojet engine, including an oil tank, a variable-displacement axial piston pump including a swash plate controlled by a double-acting control and compensation cylinder including a control chamber and a compensation chamber, the pump being supplied by the reservoir and having the ...