| 摘要 |
<p>A flood defence system for a closure such as a door (7) movable relative to a surrounding structure such as a doorframe (9). The door (7) is supported for pivotal movement relative to the doorframe (9) about a vertical axis at one side of the door by hinges (4 and 6). The hinge (6) is spring loaded and biases the door (7) to first, raised operative position for opening closing movement relative to the door frame (9). The door (7) is movable against the spring loading to a second, lowered operative position in which the bottom edge of the door (7) is engageable with a sealing strip (17) to provide a watertight seal along the bottom edge of the door (7) when closed. The doorframe (9) is provided with sealing strips (14) and side edges of the door (7) are engageable with the sealing strips (14) to provide watertight seals along both sides of the door (7) when closed. In another arrangement (Figure 10) the closure is a panel extending between two posts forming part of an enclosure for protecting an area within the enclosure against flooding.</p> |
