Vehicle passenger's protection device

Claim 1

IN A CONVEYANCE A DIRECTIONAL IMPACT ENERGY ABSORBING DEVICE WHICH INCLUDES (A) A DEFORMABLE STRUCTURE WHICH EXHIBITS SUBSTANTIAL RIGIDITY TO LATERAL FORCES WHICH TEND TO DEFLECT SAID STRUCTURE OUT OF A PLANE OF PREDETERMINED YIELDING, AND (I) RIGIFYING MEANS TO MAINTAIN SAID STRUCTURE WITHIN SAID PLANE OF YIELDING, SAID MEANS CONSISTING OF UNDULATIONS IN A SHEET INCLUDED IN SAID STRUCTURE, SAID UNDULATIONS ALSO DEFINING AXES OF FLEXURE, AND (II) RIGID GUIDE MEANS WHICH CONSTRAIN SAID AXES TO PLANES PARALLEL TO SAID PLANE OF YIELDING, AND (B) RIGID OUTER FRAME WHICH CONSTRAINS ONE EDGE OF SAID DEFORMABLE STRUCTURE AGAINST MOVEMENT IN OPPOSITION TO LOAD APPLIED TO ANOTHER EDGE WHICH IS SUBSTANTIALLY PARALLEL AND OPPOSITE TO SAID ONE EDGE, AND (C) MOUNTING AND ORIENTING MEANS FOR MAINTAINING SAID PLANE OF YIELDING OF SAID STRUCTURE IN ALIGNMENT WITH SAID LOAD, AND (D) LINKS RESISTING LOAD IN TENSION AND ATTACHING SAID RIGID OUTER FRAME TO POINTS IN SAID CONVEYANCE LOCATED TO REAR OF SAID STRUCTURE, AND (E) RESISTANCE TO COLLAPSING MEANS ENABLING SAID STRUCTURE TO UNDERGO SAID PREDETERMINED YIELDING IN SAID PLANE UNDER SAID LOAD AND SO ABSORB ENERGY.