Patent ID: 6940200
Filing Date: 2005-09-06
Classification: H02K

Abstract:
1. An electric drive having windings between magnetized disks comprising a magnetic rotor and at least one stator, wherein: (i) said magnetic rotor comprising at least two disks being made from ferromagnetic material and installed on a shaft; (ii) said disks being magnetized in direction parallel to said shaft; (iii) said stator located between said at least two magnetized disks and comprising two layers of circumferentially arrayed coil windings etched on both sides of a printed circuit board and a controlling device; (iv) each said layer comprising several pairs of coil windings and each said pair being made as a spiral that extends from the center of a start coil winding to the center of an end coil winding with the same turn direction of said spiral in relation to each coils winding center; (v) said two layers being the same in transparent view and shifted angularly, thus the center of each said start coil winding from one side of said board being electrically connected by internal via's, which are copper plated holes, with the center of each said end coil winding on the other side of said board; (vi) one of said coil windings being interrupted for providing power leads to said controlling device.