Patent ID: 7476997

Claim:
A travelling field machine with a stator and a rotor which are separated by an air gap and each of which comprises at least one stator coil or one rotor coil, respectively, wherein the stator or the rotor, respectively, comprising: a soft magnetic iron body with a stator back or a rotor back, respectively, in which spaced grooves are formed, generating teeth, and in each of the grooves several conductor bars of the stator coil or the rotor coil, respectively, are arranged in series comprising end connectors arranged at faces of the stator or the rotor, respectively, which connect the conductor bars extending across several grooves, wherein the conductor bars are arranged in a neighbouring relationship in each of the grooves, comprising conductor portions of different length projecting beyond the faces of the stator or rotor, respectively, and the end connectors are at least partially arranged layered in tiers in the axial direction at the faces of the stator or the rotor, respectively.