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:
Aug. 27, 2013
Filed:
Oct. 20, 2010
Thomas Manfredotti, La Colle sur Loup, FR;
Thomas Manfredotti, La Colle sur Loup, FR;
Eurocopter, Marignane Cedex, FR;
Abstract
A device () for reducing vibration of a main rotor () having a support () and a plurality of heavy elements () and of rollers (). Each heavy element () includes two first openings () respectively at least partially in registration with two second openings () of the support (Each roller () passes through a first opening () and a second opening (). The device () has link means () for connecting the support () to the hub (). A drive shaft () and a drive means () rotate at a first speed of rotation (V) greater than a second speed of rotation (V) of the hub (). The drive shaft () rotates about an axis of rotation (AX) of the support (). The link means () is connected to the support () by a link member () enabling the support () to rotate about the axis of rotation (AX) relative to the link means ().