A reversible energy absorbing assembly including a cellular lattice comprising a shape memory material disposed within an expandable interior region of the assembly, wherein the shape memory material is adapted to expand from a first configuration to an expanded configuration in response to fluid communication...http://www.google.fr/patents/US7350851?utm_source=gb-gplus-shareBrevet US7350851 - Reversibly expandable energy absorbing assembly and methods for operating the same
Reversibly expandable energy absorbing assembly and methods for operating ...
