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:
May. 12, 2009
Filed:
Sep. 18, 2006
Nicolas Certain, Aix en Provence, FR;
Christophe Perrin, Salon de Provence, FR;
Nicolas Certain, Aix en Provence, FR;
Christophe Perrin, Salon de Provence, FR;
Eurocopter, Marignane, FR;
Abstract
The invention relates to a rotor for a rotorcraft having foldable hinged blades, the rotor comprising a hub (), each blade being connected to the hub via a sleeve, each sleeve being hinged about a pitch axis () relative to the hub, the rotor including a respective lag damper () associated with each blade, each damper being hinged both to the hub and to the corresponding sleeve, the rotor including a system for controlling the pitch of the blades via respective pitch levers () secured to each of the sleeves; the rotor includes two abutments designed to co-operate with tooling for blocking the pitch of the blades, a first abutment presenting a bearing surface () matching a shape of revolution about an axis () of revolution, and a second abutment () designed to act axially along said axis of revolution.