Abstract: A deformation element having a single or multi-chamber hollow section with a longitudinal axis to accommodate energy of impact acting in the direction of the longitudinal axis of the section. The deformation element contains outer section walls that form inner and outer section wall faces. The outer section walls are divided into section wall end lengths and lengths and section wall intermediate lengths, whereby the abutting section wall end length of a pair of outer section walls form corner regions with corners. The wall thicknesses of the section wall end lengths are greater than the wall thickness of the section wall lengths neighboring the section wall end lengths, with the result that a thickening of the section wall is provided in the corner region.

Abstract: A bumper having crash-boxes accommodated at least in part by space in a hollow cross beam section. As a result, when impact due to collision occurs, deformation of the crash-box takes place early, so that for the same outer dimensions of the bumper longer crash-boxes can be employed. This is of advantage as the energy absorbed by the compression of the cross beam is small in relation to the mass employed and the distance traversed compared with the that achieved with crash-boxes. The capacity to absorb energy exhibited by the proposed bumper is therefore greater than that achieved by conventional bumpers.

Abstract: A deformation element having a single or multi-chamber hollow section with a longitudinal axis to accommodate energy of impact acting in the direction of the longitudinal axis of the section. The deformation element contains outer section walls that form inner and outer section wall faces. The outer section walls are divided into section wall end lengths and lengths and section wall intermediate lengths, whereby the abutting section wall end lengths of a pair of outer section walls form corner regions with corners. The wall thicknesses of the section wall end lengths are greater than the wall thickness of the section wall lengths neighbouring the section wall end lengths, with the result that a thickening of the section wall is provided in the corner region.