Abstract: A vibration damper for vehicles is described, the damper curve of which is required to be arbitrarily variable, to enable the damping to be adapted optimally to driving conditions. For this purpose, the invention has a vibration damper in which a regulating member actuable by an actuating device can be pressed with variable force against at least one spring washer of a valve closure element of a damping valve arranged in the damper piston. The contact pressure of the regulating member is arbitrarily variable and the regulating member can be pressed progressively against the spring washer of the valve closure element upon an increase of force in the radial direction.

Abstract: A venting device for fuel tanks which includes equalizing chambers disposed immediately beneath a top wall and approximately centrally with respect to side walls of the fuel tank, with the equalizing chamber being vented to the atmosphere. Vent lines are disposed inside the fuel tank and are connected to the equalizing chamber. The vent lines terminate freely in an interior of a chamber vented to an interior of the fuel tank. The end of the vent lines terminate in vent openings located in an immediate vicinity of an end wall of the chamber which receives the vent line. A single opening is provided for venting each chamber, with the opening being disposed in a wall which is opposite to the chamber end wall receiving the vent line.

Abstract: A venting device for fuel tanks of vehicles, especially motor vehicles, with an equalizing chamber to be placed in the fuel tank close to and beneath an upper wall at approximately centrally relative to side walls of the fuel tank. The equalizing chamber is vented to the atmosphere through an equalizing line and is connected to vent lines on both sides running on an inside of the fuel tank at approximately the same height. The vent lines terminate freely in a vicinity of each side wall with a vent opening at one end. The vent lines preferably terminate at the side wall line opposite to the connection of the vent lines with the equalizing chamber. Each vent line, at the ends containing the vent opening, has a chamber within the tank with the chamber being vented to the interior of the fuel tank and with the vent openings of the respective vent lines terminating in the chamber.