Patent ID: 7679254

Claim:
A stator or rotor comprising: wire receiving slots located in a circumferential direction, and a wave winding, formed of n successive wires, which is located in the slots, each wire upon each pass through a respective slot having a respective fillet in the respective slot, each wire having successive fillets located in successive slots in the circumferential direction, each wire having a substantially gable-shaped head portion between each successive fillet thereof, a group of the n head portions being formed by each of the n wires which are adjacent to one another on an axial side of the slots, with the head portions of the group intersecting at intersecting points located with an intermediate circumferential spacing between successive head portions of the group, the head portion of a next wire of the group in the circumferential direction extending radially on top of a preceding wire on one axial side of the slots and radially behind the preceding wire on the opposite axial side of the slots, and with respect to the two head portions joined by each fillet, a first one of the two head portions is located circumferentially before the fillet on the one axial side of the slot and a second one of the two head portions is located circumferentially behind the fillet at the other axial side of the slot.