Patent ID: 8643245

Claim:
A rotational kinetic energy output device, comprising: a housing component; a rotational component, comprising a rotational body, the rotational body having an axis pivotally connected to the housing component, the rotational body having at least one magnetic element; and a magnetism generating component, including a plurality of magnetizers and a plurality of coils wound on the magnetizers, the magnetizers being disposed in the housing component and surround the rotational body, each of the magnetizers having a first magnetic arm and a second magnetic arm extended respectively toward the rotational body, and the rotational body being disposed between the first magnetic arm and the second magnetic arm, and the magnetic element correspond to the first magnetic arm and the second magnetic arm, wherein the magnetic element includes an upper magnetic element, a bottom magnetic element and a lateral magnetic element, the upper magnetic element and the bottom magnetic element are disposed on two opposite sides of the rotational body respectively, the upper magnetic element has a first magnetic pole, the bottom magnetic element has a second magnetic pole, the first magnetic pole and the second magnetic pole correspond to the first magnetic arm and the second magnetic arm respectively, the lateral magnetic element is disposed between the upper magnetic element and the bottom magnetic element, the magnetizer has a trough extended along a radial direction of the rotational body, the trough divides the magnetizer into two halves, the lateral magnetic element has a third magnetic pole faces the trough.