| 摘要 |
Barrier of the type which is self-expanding from a rolled- up position to an operational position in which it automatically fills with air, and whose outer envelope, consisting of a flexible water-tight and air-tight material, is braced by a number of support elements arranged at a distance from each other. Each support element comprises a bottom rail and a support arch of flexible material which is arranged movably on the latter and which, when the barrier is in the operational position, is arch-shaped and, when rolled up under the action of an external force, can be pressed together against the bottom rail. <IMAGE> |
