US 12,352,214 B2
Differential gearbox assembly for a turbine engine
Ravindra Shankar Ganiger, Bengaluru (IN); Andrea Piazza, Turin (IT); Gontla Nagashiresha, Bengaluru (IN); Bugra H. Ertas, Niskayuna, NY (US); and Sanjeev Jha, Bengaluru (IN)
Assigned to GENERAL ELECTRIC COMPANY, Evendale, OH (US); and GE AVIO S.R.L., Rivalta di Torino (IT)
Filed by General Electric Company, Schenectady, NY (US); and GE Avio S.r.l., Rivalta di Torino (IT)
Filed on Dec. 29, 2023, as Appl. No. 18/400,762.
Application 18/400,762 is a continuation of application No. 17/806,574, filed on Jun. 13, 2022, granted, now 11,905,890.
Prior Publication US 2024/0133347 A1, Apr. 25, 2024
Int. Cl. F02C 7/36 (2006.01); F01D 15/10 (2006.01); F02K 3/06 (2006.01)
CPC F02C 7/36 (2013.01) [F01D 15/10 (2013.01); F02K 3/06 (2013.01); F05D 2220/768 (2013.01); F05D 2260/40311 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A differential gearbox assembly for a turbine engine having a fan shaft and a drive shaft, the differential gearbox assembly comprising:
an epicyclic gear assembly coupling the fan shaft to the drive shaft, the epicyclic gear assembly including a sun gear coupled to the drive shaft, a planet gear constrained by a planet carrier that is coupled to the fan shaft, and a ring gear, wherein the sun gear, the planet gear, and the ring gear all rotate about the drive shaft; and
an electric machine assembly comprising an input that rotatably engages the ring gear directly, the electric machine assembly being configured to drive the ring gear via the input to provide mechanical power to the fan shaft through the planet carrier via the ring gear.