Patent ID: 7239059

Claim:
A stator of a rotating electric machine, said stator comprising: a stator core including a cylinder-shaped back yoke, a plurality of teeth extending radially inward from inside the back yoke and a plurality of slots each formed between any two adjacent teeth; and a plurality of coils fitted in the slots such that the individual teeth are concentratedly wound by the coils; wherein the individual coils are pre-formed coil units having a common shape, each of the coil units being made by winding a conductor in a generally rectangular form, stacking one conductor line on top of another in a single row, and each of the coil units having two parallel straight portions inserted into the slots on both sides of each tooth; and wherein the two parallel straight portions of the conductor of each coil unit are fitted in two adjacent slots in such a way that one straight portion of the conductor is laid in an inner layer in one of the two adjacent slots and the other straight portion of the conductor is laid in an outer layer in the other of the two adjacent slots so that individual conductor lines fitted in each slot are radially stacked one on top of another in a single row as viewed in cross section.