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:
Oct. 31, 2023
Filed:
Dec. 11, 2020
Safran Aircraft Engines, Paris, FR;
Safran Transmission Systems, Colombes, FR;
Caroline Marie Frantz, Moissy-Cramayel, FR;
Gilles Alain Marie Charier, Moissy-Cramayel, FR;
Maeva Daphné Gros-Borot, Moissy-Cramayel, FR;
Matthieu Bruno François Foglia, Moissy-Cramayel, FR;
Adrien Louis Simon, Moissy-Cramayel, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
SAFRAN TRANSMISSION SYSTEMS, Colombes, FR;
Abstract
A propulsion system includes a drive shaft, a fan, a fan shaft, and a reduction device coupling the drive and fan shafts. The reduction device includes a first reduction stage and a second reduction state, and include a sun gear, centered on an axis of rotation of the drive and fan shafts and driven in rotation by the drive shaft, a ring gear, coaxial with the sun gear and that drives the fan shaft in rotation about the axis, and planet gears distributed circumferentially about the axis between the sun and ring gears, each planet gear including a first portion which is meshed with the sun gear and a second portion which is meshed with the ring gear, a diameter of the first portion being different from a diameter of the second portion, and an oil transfer bearing positioned between the fan and the reduction device.