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:
Apr. 26, 2016
Filed:
Jun. 03, 2014
Applicant:
Airbus Helicopters, Marignane, FR;
Inventors:
Charles Louis, Aix en Provence, FR;
Vincent Girard, Venelles, FR;
Assignee:
AIRBUS HELICOPTERS, Marignane, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 27/51 (2006.01); F16F 1/38 (2006.01);
U.S. Cl.
CPC ...
B64C 27/51 (2013.01); F16F 1/38 (2013.01); F16F 2230/24 (2013.01);
Abstract
A frequency adapter for a rotorcraft rotor is provided. The frequency adapter has at least first and second cylinders having respective elongate first and second side walls, respectively. The second cylinder is surrounded at least in part by the first cylinder. Resilient return rings are in contact with the first and second side walls. The return rings comprise resilient first and second extreme layers each in contact with the first and second side walls. The adapter is provided with a fluid arranged in a single chamber between the first and second extreme layers.