| 摘要 |
<p>A tamper-evident, single use, ring assembly, is assembled from first and second interengaging broken rings 1, 2. The first broken ring 1 is of a first material and the second broken ring 2 is of a second material. The break 6 in the first ring is offset circumferentially from break 12 in the second ring. The assembly of the rings forms a closed ring assembly which can be cut through in the region of the break to open the ring assembly. At least one of the rings is resiliently stressed in its assembled state such that, upon cutting through of the ring assembly, the cut ends of the assembly move apart. The ring may form part of a secure key ring such that it is possible to determine if a key has been removed from the keyring.</p> |
