| 摘要 |
<p>The device comprises a sleeve (10, 10') which serves to cover the polygonal head (4) of a wheel nut or bolt. The sleeve supports a lock cylinder (18) from which a locking member (28, 36) projects for co-operating with a radial shoulder (6, 6') formed in the head (4). The locking member (28, 36) is retracted by means of a key (24) rotating the cylinder plug (20, 20'). The sleeve (10, 10') can be pushed onto the head (4) without using the key (24). The locking member (28, 36) may be constituted by a latch (28) or annular spring (36).</p> |
