Device to prevent the march to countermanded in any road or via circulatory, characterized constar a swingarm, asymmetrically turning on shaft in bed buried under the plane of rolling with what the arm lower, aimed at the meaning of progress, sticks his head sharpened above said running surface, al outweighing the other branch of the arm which rests on the bottom tipped accommodation and on a rubber, while at the crush the head asomada the acting pincho the circular in rearwards's own vehicle weight force swiveled arm, leaving the reverse pincho coplanar with the running surface and window closed arc that the section of said shaft closes, it is told cushioned tilting movement by another rubber bush linked to the top inside the housing. (Machine-translation by Google Translate, not legally binding)
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