Patent ID: 6948578
Filing Date: 2005-09-27
Classification: B60K,B60L,F16C,H02K,Y02T

Abstract:
1. An electric motor in wheel drive system for a vehicle, the system comprising: an annular rotor which forms, at least in part, a rotatable cylindrical wheel structure of the vehicle and which is rotatable about a central axis of rotation, said rotor including a cylindrical inner surface coaxial with the axis of rotation, a stator which forms, at least in part, a stationary axle structure of the vehicle and includes an electrical coil for receiving and transmitting electrical power, the stator being encircled by the inner surface, and means for coupling the stator to the rotor such that the stator is located radially outwardly from the central axis of rotation of the wheel structure and disposed for orbiting movement relative to the inner surface of the rotor to develop an electromagnetic turning force therebetween, initial rotation resulting from the stator receiving electrical power and continued electrical power being generated from relative rotation.