Vehicle seat backs
First Claim
1. A vehicle seat back comprising two deformable elements both extending across the back between two lateral uprights defining the sides of the back, said elements comprising a first element suitable for dissipating energy by deforming plastically in progressive manner, and a second element suitable for stopping deformation of the first element, said second element being disposed in such a manner that when large longitudinal thrust is applied to its middle portion, practically no resistance until said second element begins by lengthening while offering said second element reaches a given length, and thereafter becomes inextensible.
1 Assignment
0 Petitions
Accused Products
Abstract
The vehicle seat back includes two deformable elements both extending across the back (2) between two lateral uprights (3) defining the sides of the back, the elements comprising a first element (7) suitable for dissipating energy by deforming plastically in progressive manner, and a second element (8) suitable for stopping deformation of the first, the second element being disposed in such a manner that when a strong longitudinal thrust is applied to its middle portion, it begins by lengthening while offering practically no resistance until it reaches a given length, after which it becomes inextensible.
30 Citations
9 Claims
- 1. A vehicle seat back comprising two deformable elements both extending across the back between two lateral uprights defining the sides of the back, said elements comprising a first element suitable for dissipating energy by deforming plastically in progressive manner, and a second element suitable for stopping deformation of the first element, said second element being disposed in such a manner that when large longitudinal thrust is applied to its middle portion, practically no resistance until said second element begins by lengthening while offering said second element reaches a given length, and thereafter becomes inextensible.
Specification