公开(公告)号：US11148622B2

公开(公告)日：2021-10-19

申请号：US16349411

申请日：2017-11-16

Applicant: ArcelorMittal

Inventor： Gilles Brun ,  Damien Herisson ,  Jimmy Lam ,  Dan Hasenpouth ,  Elie Gibeau ,  Ivan Viaux

IPC: B60R19/18 ,  B21D53/88

Abstract: A bumper beam is made of at least one rolled formed steel sheet containing an upper beam and a lower beam extending in a transversal direction, the upper beam and the lower beam each having a closed cross-section defined by a front wall, a rear wall, an upper wall and a lower wall, the upper wall and the lower wall joining the front wall to the rear wall, each of the front walls of the upper beam and of the lower beam containing a front rib extending transversally and towards the interior of the bumper beam. At least one of the upper wall of the upper beam, the lower wall of the lower beam, the rear wall of the upper beam and the rear wall of the lower beam further containing a rib extending transversally and towards the interior of the bumper beam.