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:
Jun. 30, 2026
Filed:
Aug. 08, 2025
GE Avio S.r.l., Rivalta di Torino, IT;
GE Aviation Czech S.r.o., Prague, CZ;
Simone Iurlaro, Turin, IT;
Juraj Hrubec, Prague, CZ;
Michele Gravina, Milan, IT;
Andrea Piazza, Turin, IT;
Leonardo Coviello, Bari, IT;
Daniele Pampalone, Turin, IT;
GE AVIATION CZECH S.R.O., Rivalta di Torino, IT;
GE AVIO S.R.L., Prague, CZ;
Abstract
A turbofan engine includes a turbo-engine, a fan, and a double gearbox assembly. The turbo-engine includes a compressor section, a turbine section, and a combustor in fluid communication with the compressor section and the turbine section. The turbine section includes a low-pressure turbine having a low-pressure shaft and a plurality of low-pressure turbine stages. The fan has a fan shaft drivingly coupled to the low-pressure shaft through the double gearbox assembly. The double gearbox assembly includes a first stage gear assembly coupled to the low-pressure shaft and an interstage shaft, a second stage gear assembly coupledto the interstage shaft, and an output shaft coupled to the fan shaft. The double gearbox assembly is characterized by a Double Gearbox Engine Parameter (DGEP) in a range from 150 to 650 kilograms, the DGEP being given by