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:
Nov. 12, 2013
Filed:
Oct. 04, 2010
Thomas Manfredotti, La Colle sur Loup, FR;
Jerome Chemin, Marseilles, FR;
Thomas Manfredotti, La Colle sur Loup, FR;
Jerome Chemin, Marseilles, FR;
Eurocopter, Marignane Cedex, FR;
Abstract
The invention provides a mechanism for attenuating torque pulsations between an engine () and a rotor () of a rotorcraft. Torsion means () are interposed between the driving and driven shafts and comprise a torsion shaft () axially engaged with the drive shaft () and the driven shaft () an inlet shaft () and an outlet shaft () respectively engaged with the drive and driven shafts () a lever system () that extends radially relative to the torsion shaft () and that has the inlet and outlet shafts () hinged thereto via points () that are spaced apart; and a mass () carried by said lever arm () at its free end () radially farthest away from the axis along which the torsion shaft () extends.