Patent ID: 8823237

Claim:
An electric machine ( 1 ) defining a substantially central axis ( 3 ) of rotation, said electric machine comprising: a stator ( 5 ) including a magnetic core ( 6 ) crossed substantially longitudinally by a plurality of stator slots ( 7 ); and a stator winding ( 8 ) including at least one phase and series of rigid bars ( 9 ) that are substantially “U”-shaped and inserted through said stator slots ( 7 ) defining an entry side ( 12 ) in which cusps ( 11 ) of said bars ( 9 ) are placed and an exit side ( 13 ) in which legs ( 10 ) of said bars ( 9 ) are placed; wherein said legs ( 10 ) coming out said exit side ( 13 ) are twisted through corresponding double folds each of which defines an internal fold ( 15 ) in one direction and an external fold ( 16 ) in a opposite direction, ends of said legs ( 10 ) are electrically connected to each other to form electrical paths of said stator winding ( 8 ), a width of said cusps ( 11 ) is substantially identical for said bars ( 9 ); wherein said legs ( 10 ) comprises at least a first pair ( 17 ) of said legs ( 10 ) in a part of said stator winding ( 8 ) of said phase, said first pair ( 17 ) of said legs ( 10 ) have respective first ends; wherein the other said legs ( 10 ) that are different from the first pair ( 17 ) of said legs ( 10 ) have respective second ends that are axially oriented to be parallel to each other in an axial direction; and wherein only said first ends are folded toward each other to be arranged parallel to each other in a circumferential direction so that said first ends touch each other to allow an electrical connection between said first ends and so that said first ends are oriented perpendicular to said second ends.