| 摘要 |
<p>A device for pulling a vehicle out of mud, sand or the like comprises a shoe which co-operates with the tread of a tyre (5) on a vehicle wheel comprising a rim (1) with a centre (2) integral at its periphery with a ring (3) for retaining the bead (4) of the tyre (5). At one end, the device has a retaining arm (12) which extends essentially radially in relation to the wheel and at the other end an arm which can be attached to the rim. The arm (13) has a length such that it forms an acute angle (α) with the tangent of the wheel at the runner in the direction of rotation of the wheel.</p> |
