Patent ID: 8171616

Claim:
A method of making an armature, comprising: placing a stuffer type commutator having a commutator ring with a plurality of segments with slots between adjacent segments and a lamination stack on an armature shaft to form an assembly; placing ends of coil windings wound in slots in the lamination stack in wire receiving slots at axial inner ends of the commutator ring segments; placing the armature shaft, commutator and lamination stack assembly in a mold; sealing the commutator ring with a seal around the commutator ring near the wire receiving slots; and molding an encapsulating material that is liquid during molding around at least portions of the armature shaft, commutator and lamination stack, the sealing of the commutator ring preventing the encapsulating material from flowing over the commutator ring or into the slots between the commutator ring segments.