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:
Jul. 07, 2026
Filed:
Jul. 06, 2023
Safran Aircraft Engines, Paris, FR;
Hugues Barbier, Moissy-Cramayel, FR;
Sébastien Oriol, Moissy-Cramayel, FR;
Kevin Didier Pierre Le Normand, Moissy-Cramayel, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
Abstract
A hydraulic control circuit of a steering actuator having a first and a second chamber, for orienting the blades of an aircraft engine propeller, this circuit comprising a high-pressure line and a low-pressure line, a first protection valve being able to assume a deactivated position or an activated position for placing the first chamber in communication with the high-pressure line, a second protection valve being able to assume a deactivated position or an activated position for placing the second chamber in communication with the low-pressure line, each protection valve comprising a hydraulic activation inlet and a hydraulic deactivation inlet which can be pressurised in order to activate or deactivate these valves. The circuit includes a solenoid protection valve controlling an amplification valve connected to the inlets of the protection valves in order to activate them upon the activation of the solenoid protection valve.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile