Projectile arresting device and a method for preparing a projectile arresting device

Abstract

The present invention relates to a projectile arresting device comprising a foundation constituting a floor, a rear wall and partition walls extending in a direction substantially perpendicular to the rear wall. The partition walls comprises a rear edge, adjacent the rear wall, and a front edge. Projectile stopping material is arranged between the partition walls. A projectile stopping material retaining front layer is disposed between the front edges of the partition walls and arranged adjacent the projectile stopping material. The front layer has a convex shape. The invention also relates to a method for preparing a projectile arresting device.

1 . A projectile arresting device comprising:
 a foundation constituting a floor,   a rear wall,   partition walls extending in a direction substantially perpendicular to the rear wall, the partition walls comprises a rear edge, adjacent the rear wall, and a front edge,   projectile stopping material arranged between the partition walls,   projectile stopping material retaining front layer disposed between the front edges of the partition walls and arranged adjacent the projectile stopping material,   characterized in that the front layer has a convex shape, wherein the front layer is stiff, provided with limited elasticity, having a convex shape in an unloaded and a loaded condition of the projectile stopping material and wherein the partition walls are made in one single piece with the front layer.   
     
     
         2 . The projectile arresting device according to  claim 1 , wherein the front layer is made of an elastomer with reinforced material adapted to resist tensile forces. 
     
     
         3 . The projectile arresting device according to  claim 1 , wherein the front layer is connected to the partition walls by fastening means. 
     
     
         4 . The projectile arresting device according to  claim 1 , wherein the partition walls are made of steel plate stiffened by providing a corrugated shape of the walls. 
     
     
         5 . The projectile arresting device according to  claim 1 , wherein the front layer is attached in the upper end of the projectile arresting device at the upper edges of the partition walls. 
     
     
         6 . A method for preparing a projectile arresting device, comprising the following steps:
 providing partition walls to a foundation, constituting a floor, and to a rear wall,   arranging the partition walls to extend in a direction substantially perpendicular to the rear wall, the partition walls comprises a rear edge, adjacent the rear wall, and a front edge,   arranging projectile stopping material between the partition walls,   disposing a projectile stopping material retaining front layer between the front edges of the partition walls and arranged adjacent the projectile stopping material,   providing the front layer with a convex shape, and   wherein the front layer is stiff, provided with limited elasticity, having a convex shape in an unloaded and a loaded condition of the projectile stopping material and wherein the partition walls are made in one single piece with the front layer.