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:
Dec. 15, 2009
Filed:
Aug. 09, 2006
Applicant:
Rogelio Ferrer, Marseilles, FR;
Inventor:
Rogelio Ferrer, Marseilles, FR;
Assignee:
Eurocopter, Marignane, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 27/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Solidborne noise and vibration is decoupled in a rotary wing aircraft by a laminated ball joint () for a suspension bar () of a transmission gearbox, the ball joint including at least two damper layers () dedicated to a frequency band for decoupling in the range 0 to 7000 Hz. For this purpose, the damper layers () and possibly also likewise dedicated interleaved layers () are given shape and/or dimension and/or physical-property parameters as a function of the frequency for decoupling in the determined frequency band.