| 摘要 |
<p>A device for protecting motor-vehicles against theft comprising a freely rotatable sleeve covering the polygonal head of a wheel nut or screw, into which sleeve a cylinder lock engages rotatably, which lock is provided with at least one tumbler entering the inner wall of a cylinder lock location cavity of the polygonal head which projects beyond the circumference of the cylinder lock. In the theft-protecting postion, the tumbler engages behind a cooperating locking shoulder (20) which is located on an annular body (R) inserted into an axial chamber (21) of the polygonal head (5) and locked in position thereto.</p> |
