US Patent No. 10,655,288

ENERGY ABSORPTION ASSEMBLY


Patent No. 10,655,288
Issue Date May 19, 2020
Title Energy Absorption Assembly
Inventorship Henk Cornelus, Avelgem (BE)
Steven Derycke, Aalter (BE)
Christophe Mesplont, Mouvaux (FR)
Filip De Coninck, Tremelo (BE)
Assignee NV BEKAERT SA, Zwevegem (BE)

Claim of US Patent No. 10,655,288

1. An assembly for energy absorption, comprising m number of substantially straight steel wires and n number of curved steel cords, at least one of the m number of substantially straight steel wires having a tensile strength of at least 1000 MPa and an elongation at fracture of at least 5%, at least one of the n number of curved steel cords having a tensile strength of at least 2000 MPa and an elongation at fracture of at least 2%, wherein m and n are integers, m>1, n>1, and at least one of the m number of substantially straight steel wires and at least one of the n number of curved steel cords are fixed together along their longitudinal direction, and the elongation at fracture of at least one of the m number of substantially straight steel wires is at least 2% larger than the elongation at fracture of at least one of the n number of curved steel cords such that the elongation curve of the assembly comprises three zones, wherein a first zone is characterized by an elastic deformation of the substantially straight steel wires, a second zone is characterized by the plastic deformation of the substantially straight steel wires and a third zone is composed of the continued plastic deformation of the substantially straight steel wires and the elastic deformation of the curved steel cords.