Patent ID: 8905444

Claim:
A polymeric crash box ( 10 ) for a motor vehicle, said polymeric crash box ( 10 ) having a first open frontal extremity ( 12 ) and a second rear extremity ( 14 ), said polymeric crash box ( 10 ) further comprising a substantially alveolar structure ( 20 ) having a plurality of channels ( 30 ) formed in just one piece, said plurality of channels ( 30 ) extending internally to said crash box ( 10 ) starting from said first open frontal extremity ( 12 ) towards said second rear extremity ( 14 ), each channel ( 30 ) of said plurality of channels ( 30 ) further being internally tapered towards said second rear extremity ( 14 ), at least one substantially planar polymeric fixing element ( 52 ) which is made integral to the same polymeric said crash box ( 10 ) in proximity of said first frontal open extremity ( 12 ) and which is further fixable to a crossbeam ( 60 ), wherein said substantially alveolar structure ( 20 ) comprises a second plurality of channels ( 40 ) formed in a single piece with said plurality of channels ( 30 ), said second plurality of channels ( 40 ) extending starting from said second rear extremity ( 14 ) towards said first frontal open end ( 12 ), each channel ( 40 ) of said second plurality of channels ( 40 ) being internally tapered towards said first frontal open extremity ( 12 ).