COMMUTATOR MACHINE STATOR Russian patent published in 1998 - IPC

FIELD: electrical engineering. SUBSTANCE: inserted in central parts of main poles are nonmagnetic inserts which have convex and concave sectional areas entering, respectively, concave and convex areas of separate parts of core to prevent relative shift of core parts along pole axes. EFFECT: facilitated fastening of separate core parts due to reduced number of fastening members, facilitated manufacture, reduced effect of cross-field armature reaction. 5 dwg