Patent ID: 8689427

Claim:
A method of manufacturing a stator of an electric motor comprising: providing a plurality of stator segments separated from each other, each comprising a rim having a cutout formed therein and a pole extending from the rim; winding a coil of a predetermined number of turns around the pole of each of the separated stator segment; arranging the plurality of stator segments with the winding coils in series around a mandrel and aligning the rim of the plurality of stator segments to form a cylindrical stator core having a yoke formed from the rim of the plurality of the stator segments and a plurality of poles formed from the poles of the plurality of stator segments; placing the stator core with the winding coils in a cylindrical housing with a circumferential surface of the cylindrical housing surrounding the yoke of the stator core; and pressing a plurality of areas of the circumferential surface of the cylindrical housing against the cutouts in the rims of the plurality of stator segments thereby deforming portions of the cylindrical housing to at least partly fill the cutouts and to cause the cylindrical housing to grip the stator core and prevent a rotation of the stator core relative to the cylindrical housing.