Method of improving the riding comfort especially for railway vehicles

摘要

The very weak primary spring (2) has an extremely flat characteristic line in the 'vehicle empty' loading state. This spring characteristic line evolves into a very steep spring characteristic line when there is only a slight increase in spring force and a reduced spring path. Additional spring forces, which arise through the loading of the vehicle, are taken up by a second very weak additional spring, which then engages on a regulatable basis, when the springing exceeds an adjustable value. The primary spring and the additional spring are connected in parallel and together form a structural part.