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. 05, 2016
Filed:
Jan. 23, 2012
Laurent Bianchi, Marseilles, FR;
Nicolas Isidore, Les Milles, FR;
Jacques Gaffiero, Paris, FR;
Bernard Michel, Peyrolles En Provence, FR;
Laurent Bianchi, Marseilles, FR;
Nicolas Isidore, Les Milles, FR;
Jacques Gaffiero, Paris, FR;
Bernard Michel, Peyrolles En Provence, FR;
AIRBUS HELICOPTERS, Marignane, FR;
Abstract
A blade () provided with a fitting () for fastening to a hub and with an airfoil element () having a spar () extending spanwise from an attachment zone () towards a distal zone (), said attachment zone () surrounding a centrifugal force transmission bushing () that is connected to said fitting () by a through pin (). The blade comprises a twisting force transmission member () provided with a first half-shell () and with a second half-shell () that together surround said attachment zone (), each half-shell () having a perforated first portion (″) giving visual access to said bushing () when said airfoil element is removed from the fitting, and a second portion (″) co-operating with a torsion box () surrounding said distal zone (), said transmission member () being secured to said fitting in rotation about a torsion axis (AX) of the blade ().