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:
Mar. 15, 2016
Filed:
Sep. 14, 2012
Gérard Couderc, Vitrolles, FR;
Mathilde Chouteau, Saint Grégoire, FR;
Romuald Biest, Lambesc, FR;
Airbus Helicopters, Marignane, FR;
Abstract
A system () having a control plate () for controlling the pitch of the blades () of a propeller, a power block (), and a directional control valve () for feeding said power block () with fluid. The power block () is sealed and includes at least a body in which at least one piston () that is secured to a piston rod () projecting from said body () is movable in translation, a repeater rod () connecting said piston rod () to said control plate (). The control valve () is sealed and comprises a stationary manifold () and a movable manifold () that is movable in rotation, said stationary manifold () being controlled by a control lever () connected by repeater means () to said repeater rod (). A respective pipe () connects each chamber () of said power block () to said movable manifold ().