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when mounted on a wheelchair frame, converts manually operated wheelchairs to powered wheelchairs

1.) All the components for driving the wheels are rigidly supported in a central disc structure forming the wheel cavity; 2.) The cavity is fully enclosed by cosmetic covers; 3.) The components have been chosen for longevity to outlast two or more wheelchair frames; 4.) The resulting wheels can be quickly interchanged with the standard wheels of a manually operated wheelchair; 5.) A direct gear drive; 6.) The pancake motor with a state of the art rare earth neodymium-Iron-Boron magnet, makes this motor one of the most powerful for it's size; 7.) The SPRW is the first time that, a wheel used for transportation, has rotating within it: it's own power source, power conversion means (electrical to mechanical), power electronics photo-optic signal transmission at the hub between rotating and non-rotating components.