The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2026
Filed:
Dec. 20, 2022
Safran Aircraft Engines, Paris, FR;
Hugues Barbier, Moissy-Cramayel, FR;
SĂ©bastien Oriol, Moissy-Cramayel, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
Abstract
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 outlet thereof configured to be able to be connected, via a supply pipe, to a second chamber of the orientation cylinder, a first chamber of the orientation cylinder being connected to the tank, the chambers of the control and compensation cylinder both being pressurised with a pressure corresponding to the outlet pressure of the pump, and wherein the control and compensation chambers are arranged to increase the tilt of the plate in order to increase the displacement of the pump when the pressurisation pressure of these chambers increases.