Method for making an electric motor housing with integral pole

摘要

An electrical machine including an armature rotatable within a housing comprised of a section of tubular ferrous material and methods for producing the housing. At least two alternate magnetic field pole pieces are secured within the housing and at least two intermediate induced pole pieces are formed by deforming the housing to provide inwardly projecting pole pieces intermediate the magnetic field pole pieces, each of the pole piece conforming to the shape of and closely embracing the armature.