Abstract: An exemplary lifting platform for motor vehicles has four supporting arms that are pivotally mounted on a lifting device, especially on two lateral lifting columns, and the free ends of which are movable under support points of a motor vehicle being raised. The supporting arms form a first pair and a second pair of supporting arms. At least the supporting arms of the first pair of supporting arms are adjustable in length and are implemented in the form of rigid supporting arms, which are pivotable solely about their articulation points on the lifting device. The supporting arms of the second pair of supporting arms are in the form of double-jointed arms having an additional articulated joint and, in the retracted state, are typically at least twice as long as the supporting arms of the first pair of supporting arms.

Abstract: In order to improve the safety of a lifting platform with respect to risk of a vehicle falling, provision is made, in a lifting platform having carrying arms, which can be vertically adjusted by a lifting mechanism, for raising the vehicle and having carrying plates, which are arranged at a free end of the carrying arms, for carrying the vehicle to be lifted, for a sensor arrangement having a plurality of pressure sensors which are arranged distributed over a bearing surface of the carrying plates to be installed on each of the carrying plates and for a display which displays a pressure distribution over the bearing surface of the respective carrying plate to be associated with each carrying plate.

Abstract: An exemplary lifting platform for motor vehicles has four supporting arms that are pivotally mounted on a lifting device, especially on two lateral lifting columns, and the free ends of which are movable under support points of a motor vehicle being raised. The supporting arms form a first pair and a second pair of supporting arms. At least the supporting arms of the first pair of supporting arms are adjustable in length and are implemented in the form of rigid supporting arms, which are pivotable solely about their articulation points on the lifting device. The supporting arms of the second pair of supporting arms are in the form of double-jointed arms having an additional articulated joint and, in the retracted state, are typically at least twice as long as the supporting arms of the first pair of supporting arms.

Abstract: The problem of providing a cylinder/piston unit which can be installed in a relatively space-saving manner, in particular, for use in a master/slave arrangement is solved by virtue of the fact that a first, outer hydraulic cylinder (2) is provided, in which a first piston (6) is mounted sealingly with respect to the cylinder inner wall of the first hydraulic cylinder (2) and longitudinally movable in the latter, and the first piston (6) supports a second, inner hydraulic cylinder (3), in which a second piston (9) is mounted sealingly with respect to the cylinder inner wall of the second hydraulic cylinder (3) and longitudinally movable in the latter. The second, inner hydraulic cylinder (3) supports a piston rod (10), and the piston rod (10) is connected at the end thereof which is remote from the second piston (9) to an end (4) of the outer hydraulic cylinder (2).