Grass ski roller boards

DETAILED DESCRIPTION The purpose of the present invention is to resolve the problem areas so far encountered with grass ski boards by providing a grass ski roller board imparting the same feeling of motion on snow-free terrain such as natural or artificial lawns and concrete-surfaced areas as that obtained with actual snow skiing.
A further purpose of the present invention is to provide a grass ski roller board achieving on snow-free terrain the same motion characteristics as those obtained with real snow skiing, in terms of rolling, turning, braking and ski jumping.
To achieve these objectives, the grass ski roller boards according to the present invention are characterized in that whereas said grass ski roller boards are shaped either in the form of a board in such a manner as to have roughly the same length and the same outer shape as snow ski boards with an arched curvature when seen in the side view, and with the center width smaller than at the front and rear, or in the form of a beam having a length and profile roughly identical with the aforesaid snow ski boards, forming a pair of flexible roller bodies with a flexural and torsional elasticity roughly identical with the flexural and torsional elasticity of aforesaid snow ski boards, said grass ski roller boards have a multiplicity of pairs of rollers positioned in the longitudinal directions of the aforesaid elastic roller body so that their rolling surfaces are at a lower location than the bottom of the aforesaid elastic roller body.