Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Energy absorbing member
 Provided is an energy absorbing member which makes it possible to induce contraction and deformation into a form of bellows, with Euler's buckle being restrained. An energy absorbing member comprises a hollow extrusion which is made of an aluminum alloy and has an outer portion and an inner rib connected to the outer portion, and the radius of the corner where the rib and the outer portion are connected to each other is not more than a half of the thickness of the rib. A similar energy absorbing member has plural inner ribs which are connected to the outer portion and cross each other, and the radius of the corner where the ribs cross each other is 1 mm or less. 
Kabushiki Kaisha Kobe Seiko Sho
C Y Y C B Y F Y C Y Y
C22C Y10S Y10T C22C B62D Y10T F16F Y10T C22F Y10S Y10T
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Takashi Masakazu Hiroyuki
Oka Hirano Yamashita