| 摘要 |
<p>The invention is a key-ring made up of a contiguous turn coil spring and of a base to which it releasably is mounted in the form of a U. Each end of the spring has an end member fixed thereto which comprises a neck portion and a spherical head may passage, this aperture being followed by two seats allowing sliding movement therein of the neck portions but preventing withdrawal of the head.</p> |
