Abstract: A load distributing tandem suspension assembly for supporting a chassis of a vehicle. Front and rear elongated spring arrangements are connected to each other through an intermediate equalizer arrangement. The front spring arrangement has a leaf spring pivotally attached between the chassis and the equalizer arm of the equalizer arrangement. The rear spring arrangement has a shorter leaf spring pivotally attached to the equalizer arm and assisted by a shock absorber attached between the rear end of the leaf spring and the chassis. A guiding device guides the rear end of the second spring element up and down with respect to the chassis in a vertical course.

Abstract: A tandem axle suspension for use in a vehicle such as a truck or semi-trailer, which is particularly efficient and stable and well adapted for use when the axles support steering wheels, has, on each side, front and rear leaf-spring assemblies that are aligned with respect to each other and positioned forwardly and rearwardly of an equalizer beam. The front leaf-spring assembly has a front end pivotably connected by a pin to the vehicle frame and a rear end connected by a shackle to the front end of the equalizer beam. The rear leaf-spring assembly has a front end pivotably connected by a pin to the rear end of the equalizer beam and a rear end connected by a shackle to the frame of the vehicle.