ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,818, issued on Dec. 2, was assigned to SAFRAN AIRCRAFT ENGINES (Paris).
"Gas turbine for twin-rotor aircraft" was invented by Patrick Sultana (Moissy-Cramayel, France), Olivier Renon (Moissy-Cramayel, France), Laurent Cedric Zamai (Moissy-Cramayel, France) and Clement Charles Jeremy Coiffier (Moissy-Cramayel, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A turbine includes a first rotor and a second rotor that can rotate in opposite directions and are interleaved. The turbine further includes a ring to which abradable material is secured, the ring, unsegmented, extending between the first impellers of the first rotor and the second rotor, ove...