Barrier for a building opening, to block the entry of flood water, has a frame with a linked carrier for a protective disk pressed home to plug the opening by rising water and the weight of the flood

摘要

The protective barrier at an opening (21) into a building, to block the entry of flood water, has a frame (1) in front of the opening for a linked carrier (6) with a protective disk (3) to plug the opening. The weight of water (35) against the frame presses the disk more firmly in place. A float (32) acts on the linkage to press the disk home, as water rises, or a piston/cylinder unit can be at the frame to be operated by a float-controlled valve linked to a compressed air bottle.