Motor-vehicle bumper assembly

A motor-vehicle bumper assembly comprising:

• a horizontally and transversely extending rigid and generally U-shaped rail having a transversely extending inner wall closely juxtaposed in a normal motor-vehicle travel direction with a frame of a motor vehicle, a transversely extending outer wall turned away from the motor-vehicle frame and spaced farther therefrom than the inner wall, and a horizontal wall extending horizontally between edges of the inner and outer walls;
• and
• two crush cans spaced transversely apart and each having
• a first U-section element extending in the direction and having an inner end fixed to the frame and en outer end fixed to the inner rail wall, the first element lying mainly between horizontal planes extending in the travel direction from upper and lower edges of the inner rail wall;
• a second U-section element nested with and mostly vertically offset from the respective first element and having an inner end fixed to the frame and an outer end extending longitudinally past the inner rail wall, the second element being mainly vertically offset from a region between the horizontal planes, and
• an outer mounting plate fixed to the second-element outer end and to the outer rail wall.