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. 24, 2012
Filed:
Jun. 24, 2009
Thomas Manfredotti, La Colle sur Loup, FR;
Paul Cranga, Marseille, FR;
Julien Guitton, Chateauneuf-les-Martigues, FR;
Thomas Manfredotti, La Colle sur Loup, FR;
Paul Cranga, Marseille, FR;
Julien Guitton, Chateauneuf-les-Martigues, FR;
Eurocopter, Marignane Cedex, FR;
Abstract
Described is a blade () extending longitudinally from a root () of the blade () to a free end () of the blade (), the blade () being provided with an incorporated resonator () for reducing the drag movements (F, F) of the blade (), the resonator () being provided with a closed tank () that is partially filled with a liquid (). Furthermore, the resonator () includes a central tube () immersed inside the tank (), the tank () and the central tube () being arranged in a longitudinal direction (Y) of the blade (), the central tube () having first and second ends () that communicate with the tank () so that the liquid () can move from the tank () into the central tube (), and vice versa.