Patent ID: 7777388

Claim:
A distributed coil stator for three phase external rotor electric motors, comprising a core having a cylindrical surface bounded by a first end surface and a second end surface, a first set of openings aligned in a first circular path extends along said core between said first end surface and said second end surface, a second set of openings aligned in a second circular path positioned concentrically within said first circular path extends along said core between said first end surface and said second end surface, a third set of openings aligned in a third circular path positioned concentrically within said second circular path extends along said core between said first end surface and said second end surface, and a first plurality of conductors extending through said first set of openings and wrapping around in at least one loop between adjacent pairs of said first set of openings to form a first set of stator coils, a second plurality of conductors extending through said second set of openings and wrapping around in at least one loop between adjacent pairs of said second set of openings to form a second set of stator coils, and a third plurality of conductors extending through said third set of openings and wrapping around in at least one loop between adjacent pairs of said third set of openings to form a third set of stator coils.