Patent ID: 6515390
Filing Date: 2003-02-04
Classification: H02K

Abstract:
An electric drive comprising a magnetic rotor and a stator;said magnetic rotor comprising at least two magnetized disks secured on a shaft, which shaft has a rotation axis, each of said at least two magnetized disks having an outer circumferential array of radially extending like magnetized poles and being mounted perpendicularly to the shaft, said poles of one of said magnetized disks being spaced axially from the poles of the other of said magnetized disks to form a gap, and the magnetized poles of one of said disks being axially aligned with and magnetically opposite to respective magnetized poles of the other of said disks, such that the N flux lines of each pole of one of said disks extends to each respective S pole of the other disk in the shortest axial flux dimension across said gap, and said stator comprising a circumferential array of coils, each coil being wound about an axis parallel to the shaft for generating an axially directed electromagnetic field that interacts with said flux lines, said coils being at least partially positioned within said gap during rotor rotation.