Patent ID: 7851966

Claim:
A stator for an electric machine, the stator comprising windings and a ferromagnetic core, the ferromagnetic core comprising a unitary first core element in contact with a unitary second core element, wherein: the unitary first core element includes a plurality of slots that are open for insertion of the windings, wherein the slots are between a plurality of teeth; at least a portion of the windings is compacted and bonded such that a cross section of the compacted and bonded portion of the windings generally matches the shape of at least a portion of the slots; at least a portion of the compacted and bonded windings is in the slots; the unitary second core element is in contact with the unitary first core element at a plurality of mating surfaces; at least a portion of the unitary second core element bridges between the teeth of the unitary first core element to close the open slots; wherein dielectric liners line the slots; and wherein the dielectric liners comprise windows to allow subsequently added potting material to form low thermal resistance paths between the winding surfaces and the walls of the slots.