Patent ID: 7905526

Claim:
A bumper beam for vehicles which extends asymmetrically downwards between attachment surfaces thereof disposed at the ends of the beam, said bumper beam defining a generally bow-shaped configuration extending downwardly from said attachment surfaces towards the longitudinal center of the bumper beam, said bumper beam having a top and a bottom surface, wherein said bumper beam has an outwardly convex profile having a crown portion pointing outwardly from the vehicle, said outwardly convex profile having in a lower portion thereof a longitudinal concavity ( 16 , 22 ) which, near to the lower edge of the profile, ends with a forward-pointing profile portion ( 21 , 23 ), said longitudinal concavity having a surface ( 16 ) continuously sloping forwards with a front edge ( 21 ) thereof forming said forward-pointing profile portion, said forwardmost portion of said front edge merging with the bottom surface of said bumper beam, wherein said bumper is arranged to reduce or prevent said bumper beam from riding over a lower elevated bumper beam of another vehicle in a collision so that said bumper beam and said lower elevated bumper beam are securely engaged during a collision to permit deformation and energy absorption by said bumper beam and said lower elevated bumper beam during a collision.