Abstract: Disclosed is a counter-rotating electric motor that includes an outer rotational component, an oppositely rotating inner rotational component, a force output system coupled to the outer rotational component, another force output means coupled to the inner rotational component, and an assembly for reversibly halting one of the rotational components, thereby converting the counter-rotating electric motor into a traditional motor.

Abstract: An enhanced dual rotational electric motor/generator includes an armature that rotates about a central axis in one direction, a stator that rotates about the central axis in an opposite direction, an axle that extends along the central axis and is secured to the armature, an axle support, a rotational output alignment mechanism for converting the opposite rotations of the armature and stator into a common rotational output direction, and an electrical connection mechanism that supplies functioning electrical communication between the motor/generator and external electrical circuitry while operating the motor/generator.

Abstract: An enhanced dual rotational electric motor/generator includes an armature that rotates about a central axis in one direction, a stator that rotates about the central axis in an opposite direction, an axle that extends along the central axis and is secured to the armature, an axle support, a rotational output alignment mechanism for converting the opposite rotations of the armature and stator into a common rotational output direction, and an electrical connection mechanism that supplies functioning electrical communication between the motor/generator and external electrical circuitry while operating the motor/generator.

Abstract: Disclosed is a counter-rotating electric motor that includes an outer rotational component, an oppositely rotating inner rotational component, a force output system coupled to the outer rotational component, another force output means coupled to the inner rotational component, and an assembly for reversibly halting one of the rotational components, thereby converting the counter-rotating electric motor into a traditional motor.

Abstract: An enhanced counter-rotating electric motor and an associate propulsion system for use with a water-vehicle includes a motor housing, a stator within the housing that rotates about a central axis in one direction, an armature within the stator that rotates about the central axis in an opposite direction from the stator, a first axle that is secured to the stator and extends out from the housing, a second axle that is secured to the armature and extends out from the housing, water-tight rotational seals about each of the two axles, a centrifugal-force-balancing electrical connection mechanism that supplies functioning electrical communication between the motor and external electrical circuitry while operating the motor, and a propeller secured to each said axle.