초록 ▼

An advanced dynamic impact extension module, used to protect occupants of vehicles from the adverse effects of instantaneous deacceleration of a vehicle when the vehicle impacts an end of a concrete barrier wall is disclosed. According to the invention, a composite barrier is provided which has an u

An advanced dynamic impact extension module, used to protect occupants of vehicles from the adverse effects of instantaneous deacceleration of a vehicle when the vehicle impacts an end of a concrete barrier wall is disclosed. According to the invention, a composite barrier is provided which has an upper, low density, crushable component and a lower, substantially non-crushable, base component. The height of the base component will increase from the front of the barrier to the back of the barrier, located proximate the end of the concrete barrier wall, so that a vehicle impacting the barrier will first crush the upper, low-density, crushable material. If a vehicle has sufficient impact force or velocity to crush the upper crushable front component of the barrier, the undercarriage of the vehicle will coact with raised non-crushable base components of the barrier in order to bring the vehicle safely to rest before it impacts the end of a concrete barrier wall. The non-crushable base component of intermediate sections of the barrier will increase in height in step wise fashion so that as a vehicle passes through the barrier, the raised base portions of the barrier coact with the bottom, or undercarriage, of the vehicle to create friction and drag between the bottom of the vehcle and the base component of the barrier to thereby bring the vehicle to rest before it impacts the end of a concrete barrier wall.

대표청구항 ▼

A roadside barrier, adapted to prevent vehicles from impacting obstacles, including other vehicles, comprising: a plurality of linearly arrayed barrier wall sections, each said section having a substantially identical cross-sectional exterior configuration; a first said section being a composite sec

A roadside barrier, adapted to prevent vehicles from impacting obstacles, including other vehicles, comprising: a plurality of linearly arrayed barrier wall sections, each said section having a substantially identical cross-sectional exterior configuration; a first said section being a composite section comprised of reinforced concrete and a lower density, crushable material; and wherein said lower density, crushable material is positioned above said reinforced concrete and comprises at least half of the cross-sectional volume of said first section; and a plurality of intermediate said sections, said intermediate sections being composite sections wherein a lower portion of each said section is comprised of reinforced concrete and an upper portion of each said section is comprised of a lower density, crushable material; each said intermediate section being further characterized in that the said sections located nearer said first section are comprised of a greater volume of lower density, crushable material than the said sections positioned further away from said first section.