Abstract: Protective tube for a piston-cylinder assembly of the type including a piston rod located with freedom of axial movement in a cylinder, the rod also having a section which extends outside the cylinder. A retaining element for the protective tube is attached to the piston rod, which retaining element includes a multi-part connecting ring, the parts of which are installed in the radial direction toward the piston rod and are operatively connected to it. The protective tube is connected to the connecting ring parts so that these parts come together to form a connecting ring which is braced at least in the radial direction.

Abstract: A pneumatic spring having a vibration damper and a rolling bellows which defines a spring chamber. The rolling bellows is actively connected at one end to the vibration damper which has a container pipe which possesses a connecting bearing to a motor vehicle chassis. The connecting bearing is arranged in the region of the outer surface of the container pipe. The connecting bearing is of circular design and possesses a sealing ring which seals the spring chamber. Furthermore, the connecting bearing can be designed as a pivot bearing, having at least one universal ball joint in conjunction with a ball socket. Optionally, an air direction device may be assigned to the pneumatic spring, producing a targeted air flow onto the container pipe.

Abstract: Protective tube for a piston-cylinder assembly of the type including a piston rod located with freedom of axial movement in a cylinder, the rod also having a section which extends outside the cylinder. A retaining element for the protective tube is attached to the piston rod, which retaining element includes a multi-part connecting ring, the parts of which are installed in the radial direction toward the piston rod and are operatively connected to it. The protective tube is connected to the connecting ring parts so that these parts come together to form a connecting ring which is braced at least in the radial direction.