A central tightening system for anti-skid devices and an anti-skid device having the same

摘要

Disclosed is a tightening system of straps for use in anti-skid and traction enhancement devices. The tightening system comprises a central node (111) which is located on the principle axis of the axle of a wheel and which has a plurality of extensions adapted to fasten a plurality of radially extending straps around its periphery. A plurality of radially extending flexible straps (106), which are attached to a surface contact member at their first ends and to the central node at their second ends, are used to tighten the anti skid device. The flexible straps are passed through a buckle (32) for tightening the surface contact members in the radial direction. The straps are provided with ratchet teeth (30) along at least one of their surfaces. The buckle has a driving thumb which allows the user to adjust the tightness of the strap as much as needed while the ratcheted strap is prevented from reverse movement by a teeth and a pawl of the buckle.