Roller for a skating device

Abstract

A roller for a skating device comprising a first material having a minimum elastic modulus of 1 GPa, preferably at least 2 GPa, and more preferably at least 2.9 GPa and/or the maximum elastic modulus of the first material having 10 GPa, preferably at most 5 GPa, and more preferably at most 3.1 GPa.

1 - 24 . (canceled) 
     
     
         25 . A roller for a skating device comprising an outer section being formed of a first material, wherein the first material comprises an elastic modulus in a range of E=1 GPa to E=10 GPa. 
     
     
         26 . The roller for a skating device according to  claim 25 , wherein the first material comprises the elastic modulus in a range E=2 GPa to E=5 GPa. 
     
     
         27 . The roller for a skating device according to  claim 25 , wherein the first material comprises the elastic modulus in a range E=2.9 GPa to E=3.1 GPa. 
     
     
         28 . The roller for a skating device according to  claim 25 , comprising a layer being formed of the first material and a core having a second material. 
     
     
         29 . The roller for a skating device according to  claim 25  wherein a circumferential surface of the roller comprising a substantially concave shape, a cylindrical form, or an hourglass form. 
     
     
         30 . The roller for a skating device according to  claim 29 , the circumferential surface of the roller comprising two truncated right circular cones connected together on the smaller diameter faces. 
     
     
         31 . The roller for a skating device according to  claim 25 , comprising an angle α between an axis of the roller and the surface of the roller wherein a is in a range of α=10 degrees to α=25 degrees. 
     
     
         32 . The roller for a skating device according to  claim 31 , comprising a second angle β further bending the surface of the roller. 
     
     
         33 . The roller for a skating device according to  claim 25 , wherein a Poisson's ratio of the roller is in a range of μ=0.30 to μ=0.45. 
     
     
         34 . The roller for a skating device according to  claim 25 , wherein a weight of the roller is in a range of 20 g to 100 g. 
     
     
         35 . The roller for a skating device according to  claim 34 , wherein the weight of the roller is in a range of 47 g to 53 g. 
     
     
         36 . The roller for a skating device according to  claim 25 , wherein an outer diameter (D) of the roller is in a range of 2 cm to 4 cm. 
     
     
         37 . The roller for a skating device according to  claim 25 , further comprising a section having a concave shape and is adapted to provide contact with a ball at one point, at one contacting surface or at an elliptical surface. 
     
     
         38 . The roller for a skating device according to  claim 25  wherein, the roller is adapted to rotate using an axle, which is arranged to pass centrally through the roller, further the axle is configured to be connected to the roller using a bearing or a sliding surface and allow the roller to transfer an angular momentum from a ball to a chassis. 
     
     
         39 . The roller for a skating device according to  claim 25 , further comprising a pattern on the surface of the roller, said pattern configured to adjust a coefficient of kinetic friction, durability and color. 
     
     
         40 . A skating device comprising two or more rollers according to  claim 25 , and further comprising a chassis and a support for fixing to a boot. 
     
     
         41 . A method for manufacturing a roller for a skating device particularly according to  claim 25 , allowing a minimum weight of the roller to be 30 g, and a maximum weight to be 60 g. 
     
     
         42 . The method for manufacturing a roller for a skating device according to  claim 41 , allowing the roller to comprise a section which concave and is adapted to provide contact with a ball at one point or contacting surface, or an elliptical surface. 
     
     
         43 . The method for manufacturing a roller for a skating device according to  claim 41 , allowing the roller to rotate using a rotational axis, wherein, the rotational axis is arranged to pass centrally through the roller, and is configured to be connected to the roller by using a bearing or a sliding surface and adapted to allow the roller to transfer an angular momentum from a ball to a chassis. 
     
     
         44 . The method for manufacturing a roller for a skating device according to  claim 41 , allowing the roller to further comprise to comprise a pattern on the surface of the roller, used to adjust a coefficient of kinetic friction, durability, color, and/or to comprise a design and/or a text.