Roller ski comprising an improved shock absorber device

Abstract

The present invention is related to a roller ski with an adapted shock absorber device arrangeable inside a hollow backend of the roller ski body (16), wherein a first member (11) of the shock absorber device is supporting a backend wheel of the roller ski, a second member (14) is attachable to an inside surface of the hollow backend of the roller ski body (16), wherein a material strip (13) of a stretchable and compressible material is arranged in between the first and second member (11, 14).

1 . A roller ski arranged with a shock absorber device, the shock absorber device comprises:
 at least one an arm including:
 a first member arranged with a through-hole in one end of the first member arranged to support an axel of a roller ski wheel; 
 a second member attachable to an inner wall of a hollow backend part of a roller ski body; 
 a stretchable and compressive material strip arranged in between surfaces of the first and second member; and 
 a surface of the material strip facing towards a surface of the first member is partly covering the surface of the first member leaving an uncovered surface running parallel to a longitudinal direction of the first member on both sides of the surface of the first member. 
   
     
     
         2 . The roller ski of  claim 1 , wherein a cut-out is arranged in a backend part of the roller ski body. 
     
     
         3 . The roller ski of  claim 2 , wherein the cut-out leaves two protruding parts on each side of the cut-out running in a direction of the longitudinal direction of the roller ski body. 
     
     
         4 . The roller ski of  claim 2 , wherein the cut-out is dimensioned to support a roller ski wheel. 
     
     
         5 . The roller ski of  claim 3 , wherein a respective one of the arm is arranged inside each protruding parts, wherein one of the two shock absorber arms is a mirrored version of the other one. 
     
     
         6 . The roller ski of  claim 1 , wherein a specific material property of the material strip is defined by the material composition controlling a softness property of the material of the material strip. 
     
     
         7 . The roller ski of  claim 5 , wherein the material strip of the respective arms are dimensioned such that an upper side edge and a lower side edge of the material strip is in contact with a top and respective bottom surface of the respective protruding cut-out parts. 
     
     
         8 . The roller ski of  claim 1 , wherein the uncovered surface of the first member is running in parallel with the longitudinal direction of the first member on only one side of the first member. 
     
     
         9 . The roller ski of  claim 1 , wherein the second member is attachable to the inner wall of the hollow backend of the roller ski body with bolts or screws adapted to fit into at least two threaded holes on a side surface of the second member. 
     
     
         10 . The roller ski of  claim 9 , wherein a length of the respective bolts or screws are adapted in length to a thickness of the second member.