Abstract: A device for permanently coupling two shafts rotatable about a common axis comprises a tubular intermediate member disposed between the outer shaft and the inner shaft, an elastic connecting member disposed between the inner shaft and the tubular intermediate member, the elastic member being attached directly to the inner shaft and to the tubular intermediate member; and rotational connecting means between the outer shaft and the tubular intermediate member. When the coupling is mounted on an automobile vehicle steering column, the inner shaft is a tube of the steering shaft and the outer shaft is the connection end of the yoke of a universal joint.

Abstract: A motor vehicle steering column comprises a steering shaft mounted in a body-tube connected via a support assembly to the chassis of the vehicle, the support assembly comprising a mobile support, a fixed support attached to the chassis of the vehicle and a double winding mounted on a member rotating on a fixed shaft. The double winding has a central portion mounted on the mobile support connected to the body tube so that in the event of an impact the mobile support pushes the double winding and unwinds it to absorb energy.