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. 01, 2014
Filed:
Apr. 19, 2010
Applicants:
Vincent Girard, Venelles, FR;
Stéphane Mazet, Munich, DE;
Inventors:
Vincent Girard, Venelles, FR;
Stéphane Mazet, Munich, DE;
Assignee:
Airbus Helicopters, Marignane Cedex, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/00 (2006.01); B63H 5/125 (2006.01); F03B 3/12 (2006.01); F04D 29/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A concentrated-mass device including a main oscillating mass held radially in a horizontal plane by main resilient means inside a casing suitable for being secured to the hub is provided. The device includes a secondary main oscillating mass suspended by secondary resilient means inside a recess in said main oscillating mass to oscillate along a vertical axis perpendicular to the horizontal plane, the secondary oscillating mass being constrained to move in translation together with the main oscillating mass in the horizontal plane.