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:
Aug. 04, 2026
Filed:
Jul. 10, 2023
Safran Helicopter Engines, Bordes, FR;
Romain Jean Gilbert Thiriet, Moissy-Cramayel, FR;
Camel Serghine, Moissy-Cramayel, FR;
Thomas Drouin, Moissy-Cramayel, FR;
SAFRAN HELICOPTER ENGINES, Bordes, FR;
Abstract
A hybrid propulsion system including a turbine engine including a high-pressure spool and a low-pressure spool, the low-pressure spool including reduction gear, the reduction gear forming part of a transmission gearbox which is positioned axially at a front end of the propulsion system; —first and second electric machines mechanically and respectively connected to the high-pressure and low-pressure spools, the electric machines being configured to operate in modes referred to as motor and generator, the first and second electric machines being fixed to the transmission gearbox; —a control system which is configured to allow the transfer of power between the high-pressure and low-pressure spools via the first and second electric machines.