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. 02, 2008
Filed:
Jun. 07, 2005
Michel Vialle, Aix En Provence, FR;
Michel Vialle, Aix En Provence, FR;
Eurocopter, Marignane Cedex, FR;
Abstract
A transmission mechanism between at least one accessory and engine members for driving the rotor of a rotorcraft, the transmission therebetween being selectively either in isolation or in combination. An intermediate shaft is interposed between a main drive shaft for the rotor and a secondary drive shaft for the accessory, for driving the accessory from an engine member allocated to driving it. This intermediate shaft engages directly on the main shaft and meshes with an accessory drive gear via freewheels to enable the gear to be driven either by the engine member or from the main shaft in the position for combined drive together with the rotor, the rotor being driven by the other engine member or autorotation in the event of both engine members failing.