Patent ID: 8288916

Claim:
An electromechanical machine comprising a concentric magnetic layer comprising an inner concentric magnetic layer comprising at least an inner magnet, the magnets having north-south poles arranged in radial directions; and an outer concentric magnetic layer comprising at least an outer magnet, the magnets having north-south poles arranged in radial directions; and a double-sided concentric magnetic layer having an inner side and an outer side, the inner side facing the inner magnetic layer and the outer side facing the outer magnetic layer, wherein the double-sided magnetic layer comprises a plurality of electromagnets which protrude through the inner side and the outer side, the plurality of electromagnets providing substantially equally magnetic fields to the inner side and the outer side of the double-sided magnetic layer in interacting with the inner and the outer magnetic layers, wherein the electromagnets comprise two windings facing the inner and the outer magnetic layers with independent windings, wherein the innermost concentric magnetic layer comprises a through hollow center for inserting a shaft so that one or more eletromechanical machines can be added to or removed from a common shaft.