Patent ID: 7211915

Claim:
A motor assembly, comprising: a plurality of redundant bearings; a plurality of coaxial support elements, comprising a housing containing an armature and said plurality of redundant bearings with at least one of said support elements rotatable about an axis of rotation, said armature rotatably guided by said plurality of support elements to rotate about said axis of rotation; and a centripetal sleeve adapted to rotate about an axis within said housing and being guided by at least one of said redundant bearings; a plurality of blades coupled to said armature, each of said blades being adapted to rotate about said axis within said centripetal sleeve; at least one rotor element connected to said armature; and redundant stators connected to an interior portion of said housing opposed to and in a complementary position with respect to said at least one rotor element; so that application of an electromotive force between said rotor and stators induces said blades to rotate even if one of the stators fails.