US Patent 7845710 Underride compatibility apparatus for a vehicle

An underride compatibility apparatus is provided for a vehicle structure. The apparatus includes a frame arranged to support the vehicle structure. The frame includes an energy absorption portion arranged for absorption of impact energy. The apparatus also includes a beam arranged substantially transverse to the vehicle structure, below the frame, and remote from the energy absorption portion. The apparatus also includes a flexible member configured to carry a tensile load, but not a substantial compressive load. The flexible member distributes the impact energy between the energy absorption portion and the beam when the member is loaded in tension during an underride impact, but does not affect the impact energy absorption of the energy absorption portion during a direct impact.