Patent ID: 7956504

Claim:
An electromechanical machine comprising: a double-sided stator comprising an inner stator side and an outer stator side; an inner rotor comprising at least one of a permanent magnet and a rotor winding, the inner rotor having a first rotor side facing the inner stator side; an outer rotor comprising at least one of a permanent magnet and a rotor winding, the outer rotor having a second rotor side facing the outer stator side; and a gear mechanism to couple the inner rotor and the outer rotor, acting as a locking mechanism to keep the outer rotor in place, comprising two frame gears mounted on two ends of the double-sided stator frame, providing the mounting point for the inner rotor and the outer rotor; and two inverted gear races on the inner circumference of an outer shell housing the outer rotor, the inverted gears coupled with the frame gears to provide support for the outer shell.