ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,506,390, issued on Dec. 23.
"Dual-rotor electrical machines" was invented by Rainer Meinke (Concord, Mass.) and Shashikant Manikonda (Melbourne, Fla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dual-rotor machine comprising a dual rotor support structure rotatably connected to a frame. A stationary stator is disposed between the rotors and is fixed to the frame. An inner rotor and outer rotor, each comprising a permanent magnet Halbach array, are coaxially disposed with the stator and are rotable about the stator. In this configuration, the inner rotor channels its magnetic flux to its outside, while the outer rotor channels its magnetic flux to it...