| 摘要 |
<p>Apparatus for restraining movement of a wheeled vehicle bar a free standing frame (10) which is positioned next to the vehicle wheel. Lengths of chain (16, 17) are fixed to frame (10) and can be extended around the wheel and brought back and engaged with the frame (10) thereby preventing movement of the wheel. A cover (40) is fitted over the frame (10) to prevent access to the frame (10) and the engagement of the chains (16, 17) with the frame (10) by which unauthorised tampering or removal of the apparatus is prevented. In one embodiment the chains (59, 61, 67, 68) are interlinked with rigid members (62) which prevent movement of the chains beyond a predetermined limit thereby increasing the protection against unauthorised removal of the apparatus. Security against the movement of the chains beyond the predetermined limit is also heightened by use of a cross member of chains (17) or rigid bar (66).</p> |
