Abstract: An armature for an electric motor has an improved integrated armature coil body. The integrated armature coil body includes an annular and substantially flat portion projecting a minimum distance beyond one end of an armature core, the annular portion being defined by curved connecting portions of separate winding wires arranged and disposed substantially in the Archimedes' spiral relationship about the center of the armature core. Each of the winding wires has first and second straight portions extending from the curved connecting portions through different slots in the armature core and connected to a commutator at the other end of the armature core. Each wire has two curved connecting portions, one overlying the other curved connecting portion of a plurality of other wires.

Abstract: An armature for an electric motor has an improved integrated armature coil body. The integrated armature coil body includes an annular and substantially flat portion projecting a minimum distance beyond one end of an armature core, the annular portion being defined by curved connecting portions of separate winding wires arranged and disposed substantially in the Archimedes' spiral relationship about the center of the armature core. Each of the winding wires has first and second straight portions extending from the curved connecting portions through different slots in the armature core and connected to a commutator at the other end of the armature core. Each wire has two curved connecting portions, one overlying the other curved connecting portion of a plurality of other wires.

Abstract: A conductor of a rectangular cross-section is overlapped with an insulator having a greater width than the width of the conductor and wound to form a coil assembly. The oversized portions of the insulator are folded and cemented together. The coil assembly is mounted on a stator pole core so that the folded insulator portions are respectively adjacent to the pole piece of the core and to the inner wall of a cylindrical yoke when the pole core is secured to the yoke. The folded portions of the insulator are depressed by an amount sufficient to allow the coil assembly to be firmly clamped in position.