skid for moving on snow, ice and water, such as a ski or a snowboard

Abstract

A skid for moving on snow, ice and water, such as a ski or a snowboard, consisting of a sliding surface ( 1 ) which touches the surface of snow, ice or water directly, and its opposite, top surface ( 4 ), characterized by the fact that its sliding surface ( 1 ) and its parallel surface ( 4 ) have a shape of a wave ( 3 ) with a frequency of more than 2.5 waves per its effective length, along its long axis ( 2 ).

1 . A skid for moving on snow, ice and water, such as a ski or a snowboard, according to the invention, consists of a sliding surface which touches the surface of snow, ice or water directly, and its opposite, top surface, whereby its effective length is the section between extreme points contacting the underlying surface, disregarding the arched sections of nose tips and ski or snowboard foot, with the waving having the shape of an entire full length of a sinusoid or a similar variable curve with wave maximum and minimum, characterized by the fact that its sliding surface ( 1 ) and its parallel top surface ( 4 ), opposite to the sliding surface ( 1 ), have a shape of a wave ( 3 ) with a frequency of more than 2.5 waves per the effective length of the skid along its long axis ( 2 ).