| 摘要 |
<p>A lock (1) in the form of a security chain comprising a spring (2) and an elongated member (3) connected to the spring (2). A head (14) is provided on the elongated member (3). Fixing means (18) are provided to mount the spring (2) on a receiving defice (61), and a securing device (23) is provided with which the head (14) can be engaged in use in a manner such that some distortion of the spring (2) can occur with the head (14) remaining in engagement with the securing device (23), but so that the head (14) can be completely @disengaged@ from said securing device (23) if desired.</p> |
