| 摘要 |
<p>Inertial traction device comprising a support element (1,1') comprising a lower surface (1a,1'a) having a different coefficient of friction according to two opposite senses of a direction of movement (V), with respect to a support surface (S,W), and impulsive inertial means (2) suitable to exert thrust impulses parallel to said direction of movement (V) on said support element (1,1').</p> |
