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:
Sep. 29, 1998
Filed:
Apr. 03, 1997
Elio Zoppitelli, Bouc Bel Air, FR;
Laurent Jean Girard, Marseille, FR;
Eurocopter France, Marignane, FR;
Abstract
The present invention relates to a suspension device for a transmission box (BT) of a rotary-wing aircraft, including bearing pieces (2) connected to the upper part (3) of the transmission box (BT), a suspension system (SU) which connects the lower part (9) of the transmission box (BT) to the fuselage (F) of the aircraft and which includes suspension leaves (5), and resonator means (7) which are associated respectively with the said bearing pieces (2) and which include a mass support (13) secured to the associated suspension leaf (5) and equipped with a flapping mass (MB). According to the invention, the said device additionally includes tuning means (18, 19) associated with the said resonator means (7) and capable of tuning their natural frequencies.