| 摘要 |
<p>Adjustable closure means (16) for closing an opening or for retaining an article such as a lead (14) within an opening. The closure means (16) has a flexible sleeve (21) supported between opposed mountings (17 and 18) supporting opposite end portions of the sleeve (21). The opposed mountings (17 and 18) are rotatable with respect to one another to twist the flexible sleeve (21) whereby the portion (23) of said sleeve intermediate the opposed mountings may be contracted towards a closed position across said opening. Holding means is provided for holding the opposed annular mountings (17 and 18) in their selected rotational positions.</p> |
