Abstract: A secondary suspension system includes a pair of air springs connected between the bolster of a truck and the car body. The air springs are disposed at angles extending inwardly from opposite ends of the bolster towards the center of the car body to provide both vertical and lateral suspension for the car body.
Abstract: A fastener for retaining two adjacent edges of a pair of panels against the surface of a structure includes a head with an eccentrically disposed stem extending therefrom. A flange section around the stem is spaced from the head. Projecting sections extend from the stem below the flange. The projecting sections extend through an opening in the surface of the structure and retains the fastener therein.
Abstract: A guard beam is disposed below the bottom of the rear end of a trailer or truck. Energy absorbing members are connected between the trailer and the guard beam. When impact forces applied to the guard beam exceed predetermined minimum levels, the guard beam collapses and energy is absorbed in the absorbing members during the collapse of the beam.
Abstract: A tilt system for a railway car includes mechanism for tilting the car only when lateral acceleration forces exceed preselected minimum levels and to limit the amount of tilting of the car.