Stabilizing element for a shoe

Abstract

Described is a stabilizing element ( 10 ) for a shoe sole, in particular for a mountaineering shoe, comprising: (a) a first plate ( 11 ), comprising at least one opening ( 12 ); (b) a second plate ( 13 ) arranged at least partially in the opening ( 12 ); and (c) a third plate ( 14 ) arranged at least partially in the opening ( 12 ) and arranged at least partially above the second plate ( 13 ), wherein the third plate ( 14 ) comprises a substantially higher bending stiffness than the second plate ( 13 ).

That which is claimed is: 
     
         1 . A stabilizing element for a shoe sole comprising:
 a first plate comprising at least one opening;   a second plate arranged at least partially in the at least one opening; and   a third plate arranged at least partially in the at least one opening and arranged at least partially above the second plate,   wherein the third plate comprises a bending stiffness that is substantially higher than a bending stiffness of the second plate.   
     
     
         2 . The stabilizing element of  claim 1 , wherein the bending stiffness of the second plate is substantially higher than a bending stiffness of the first plate. 
     
     
         3 . The stabilizing element of  claim 1 , wherein the second plate and the third plate each comprise a base material having a fiber reinforcement. 
     
     
         4 . The stabilizing element of  claim 3 , wherein the base material of the second plate comprises approximately 5% to 20% fiber reinforcement and the base material of the third plate comprises approximately 20% to 50% fiber reinforcement. 
     
     
         5 . The stabilizing element of  claim 3 , wherein the fiber reinforcement comprises glass fibers. 
     
     
         6 . The stabilizing element of  claim 1 , wherein the first plate comprises a base material that is free of fiber reinforcement. 
     
     
         7 . The stabilizing element of  claim 6 , wherein the first plate, the second plate and the third plate are made from the same base material. 
     
     
         8 . The stabilizing element of  claim 7 , wherein the base material of the first plate, the second plate, and the third plate is polyamide. 
     
     
         9 . The stabilizing element of  claim 1 , wherein the third plate is approximately 1 mm to 3 mm thick. 
     
     
         10 . The stabilizing element of  claim 1 , wherein the bending stiffness of the third plate is at least two times higher than the bending stiffness of the second plate. 
     
     
         11 . The stabilizing element of  claim 1 , wherein the bending stiffness of the second plate is at least two times higher than the bending stiffness of the first plate. 
     
     
         12 . The stabilizing element of  claim 1 , wherein the first plate has a modulus of elasticity that is approximately 600 MPa to 1500 MPa. 
     
     
         13 . The stabilizing element of  claim 1 , wherein the second plate has a modulus of elasticity that is approximately 2000 MPa to 4000 MPa. 
     
     
         14 . The stabilizing element of  claim 1 , wherein the third plate has a modulus of elasticity that is approximately 9000 MPa to 13000 MPa. 
     
     
         15 . A stabilizing element for a shoe sole comprising:
 a first plate having at least one opening;   a second plate, which is arranged at least partially in the at least one opening; and   a third plate, which is arranged at least partially in the at least one opening and at least partially above the second plate,   wherein the third plate comprises a plurality of ribs arranged in a longitudinal direction of the stabilizing element.   
     
     
         16 . The stabilizing element of  claim 15 , wherein the second plate comprises a plurality of ribs arranged in a longitudinal direction of the stabilizing element. 
     
     
         17 . The stabilizing element of  claim 16 , wherein the plurality of ribs of the third plate coincide with the plurality of ribs of the second plate. 
     
     
         18 . The stabilizing element of  claim 15 , wherein the plurality of ribs of the third plate have a height of approximately 1 mm to 3 mm. 
     
     
         19 . The stabilizing element of  claim 16 , wherein the plurality of ribs of the second plate have a height of approximately 1 mm to 5 mm. 
     
     
         20 . The stabilizing element of  claim 1 , wherein the base material of the third plate has a 4% strain at break at 0° C. 
     
     
         21 . The stabilizing element of  claim 1 , wherein the stabilizing element covers an entire foot of a wearer of a shoe into which the stabilizing element is to be integrated. 
     
     
         22 . The stabilizing element of  claim 1  wherein the at least one opening in the first plate is arranged such that the second plate and the third plate do not extend outside of a shoe into which the stabilizing element is to be integrated. 
     
     
         23 . A shoe comprising:
 an outsole;   an upper; and   a stabilizing element comprising (i) a first plate having at least one opening, (ii) a second plate, which is arranged at least partially in the at least one opening, and (iii) a third plate, which is arranged at least partially in the at least one opening and at least partially above the second plate, wherein the third plate comprises a bending stiffness that is substantially higher than a bending stiffness of the second plate,   wherein the stabilizing element is arranged between the outsole and the upper.   
     
     
         24 . The shoe of  claim 23 , further comprising a midsole arranged between the outsole and the stabilizing element. 
     
     
         25 . The shoe of  claim 23 , wherein the outsole is made of rubber.