Patent ID: 7205693

Claim:
A rotor-stator structure for electrodynamic machines having an axis, comprising: a rotor in which is mounted at least two magnets arranged axially on said axis and being spaced apart from each other, said magnets having regions of predetermined magnetic polarization and each having confronting magnetic surfaces of principal dimension substantially at an acute angle to said axis, said confronting magnetic surfaces facing each other, with said magnetic polarizations being in substantially opposite direction; and field pole members arranged coaxial to said axis and having flux interaction surfaces formed at the ends of said field pole members and located adjacent said confronting magnetic surfaces, which are generally coextensive with said principal dimension thereof, defining functioning air gaps therewith, each of said field pole members is magnetically permeable, wherein said flux interaction surfaces are configured to magnetically couple said field pole members to said magnets, wherein said magnets are multipole magnets having a pluraity of north poles and south poles.