Abstract: The invention relates to an adjusting device, in particular for the seat of a motor vehicle, comprising at least one first rail (lower rail (1)) and one second rail (upper rail 2)) which is embodied in a displaceable manner in relation to the first rail, in addition to a spindle (4) which is connected to the first rail and a drive housing (14) which can be penetrated by the spindle and which is arranged on the second rail, said drive housing being provided in order to receive at least one gear element which co-operates with the spindle. According to the invention, the drive housing is secured in a directly positive manner to the associated rail but also in a manner whereby the height can be adjusted.

Abstract: The invention concerns a seatback for a vehicle seat, having an integrated protective device. The protective device includes a device that generates a torque acting in a pivoting direction on an upper back part, a rear-end impact detector that is in effective connection with the torque-generating device in such a way that the device is activated in the event of the rear-end impact and the pivoting motion is initiated, and an immobilization device for retention of the upper back part in the normal use position.

Abstract: A seat back for an automotive seat with an integrated protective device and a process for preventing injuries to a seat occupant caused by an accident in the event of a rear-end impact. The seat back features a bottom seat-back part and a top seat-back part that, by means of a torque, pivots around an axis in the seat back that is perpendicular to the longitudinal axis of the vehicle, out of a position of standard use and into a safety position. To improve the efficiency of such a seat back, it is proposed that the protective device features a device that generates the torque regardless whether the automotive seat is occupied, and means for detecting a rear-end impact, which are actively linked with the torque-generating device in such a way that the device is activated in the event of a rear-end impact and the swinging movement is started.