Stator for electric machines

Claim 1

A stator for electric motors including a rotor and consisting of at least a pair of stacks each comprised of a plurality of laminations forming a yoke component in the axial plane of the motor and having pole portions extending from opposite sides of the yoke component arranged with their sides in the direction of the rotor axis, windings surrounding the yoke components, means defining an open air gap between the yoke components and the rotor, the terminal portions of the laminations running in the axial direction being bent inwardly towards a stator bore and the outer edges thereof maintained in spaced-apart relation at positions predetermined with regard to the magnetic flux lines and being permanently fixed in this position solely by means of a moulded compound, said edge portions facing the stator bore and being disposed on the periphery of a circular cylinder defining the stator bore, each lamination stack consisting of undivided laminations comprising a north and a south pole, each main pole consisting of the lamination edges of two adjacent lamination stacks.