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:
Mar. 12, 2013
Filed:
Oct. 06, 2009
Lionel Thomassey, Fos sur Mer, FR;
Eric Magre, Pelissanne, FR;
Lionel Thomassey, Fos sur Mer, FR;
Eric Magre, Pelissanne, FR;
Eurocopter, Marignane Cedex, FR;
Abstract
A drive device (D) for driving first and second lift rotors () of a twin-rotor rotorcraft, includes link elements provided with first and second transmission shafts () for synchronizing the first and second transmission members () of first and second main gearboxes (), the first main gearbox () being provided with first power combiner element () firstly meshing with the first transmission member () and secondly mechanically linked with the first transmission shaft () and with the second transmission shaft (), and the second main gearbox () being provided with second power combiner element () firstly meshing with the second transmission member (), and secondly mechanically linked with the first transmission shaft () and with the second transmission shaft ().