Alpine snowboard

Abstract

An alpine snowboard comprises a boot portion having elements of a binding, a tail portion located at the back of said snowboard and extending along about 1/10 of the total length of said snowboard, and a back intermediate portion located between the boot portion and the tail portion, part of which is a zone having reduced mechanical properties. The zone having reduced mechanical properties is the result of at least a lateral cutout located at least on the lower portion of the snowboard. At least one of the squares of the snowboard has a deviation at said cutout so as to comprise two square portions movable vertically with regard to each other, that is a back square portion and a front square portion which are separated by said deviation.

1 . An alpine snowboard, comprising a boot portion having elements of a binding, a tail portion located at the back of said snowboard and extending along about 1/10 of the total length of said snowboard, and a back intermediate portion located between the boot portion and the tail portion, part of which is a zone having reduced mechanical properties, said snowboard having a base and first and second squares each extending on one side of the said base, from the front of the snowboard to a back end of said snowboard, wherein
 in that the zone having reduced mechanical properties is the result of at least a lateral cutout located at least on the lower portion of the snowboard, and   in that the first square at least has one deviation at said cutout so as to comprise two square portions movable vertically with regard to each other, that is a back square portion and a front square portion which are separated from one another by said deviation.   
   
   
       2 . The snowboard as claimed in  claim 1 , wherein the deviations skirts said cutout. 
   
   
       3 . The snowboard as claimed in  claim 1 , wherein said cutout extends along the whole height of the snowboard. 
   
   
       4 . The snowboard as claimed in  claim 1 , wherein the snowboard comprises a spatulate portion and a front intermediate portion which is located between the boot portion and the spatulate portion, only the back intermediate portion among the back and front intermediate portions comprising a zone having reduced mechanical properties which is the result of at least one lateral cutout located at least on the lower part of the snowboard and in which the first square at least has a deviation so as to comprise two square portions movable vertically with regard to each other. 
   
   
       5 . The snowboard as claimed in  claim 1 , wherein the zone having reduced mechanical properties is also the result of another lateral cutout located at least on the lower part of the snowboard, one and the other cutout being located respectively on a first side and a second opposite side of the snowboard, the second square having a deviation at the location of said other cutout so as to comprise two square portions movable vertically with regard to each other, that is a back square portion and a front square portion which are separated by said deviations. 
   
   
       6 . The snowboard as claimed in  claim 1 , wherein—at the location of said zone having reduced mechanical properties, the snowboard comprises additional stiffening means tending to increase the bending stiffness of the snowboard in a longitudinal plane at least. 
   
   
       7 . The snowboard as claimed in  claim 6 , wherein said additional stiffening means comprise a thickening of the snowboard at the location of said zone having reduced mechanical properties. 
   
   
       8 . The snowboard as claimed in in  claim 1 , wherein said zone having reduced mechanical properties is located in front of a back contact line of the snowboard. 
   
   
       9 . The snowboard as claimed  claim 1 , wherein the zone having reduced mechanical properties is a zone having a lower twist stiffness.