Patent ID: 7121764

Claim:
A portable flood barrier section ( 1 ) to be located on a ground ( 2 ) to form a barrier ( 3 ) against flooding water ( 4 ), comprising an erectable wall ( 5 ) which along one of its edges ( 6 ) is hinged to a basis, the hinge ( 7 ) enabling a rotating erection (A) of the wall ( 5 ) from an essentially horizontal position to an erected position, a flexible or rigid tie ( 8 , 9 ) which extends from the basis to the wall ( 5 ) on the flooded side ( 10 ) of the wall ( 5 ), to prevent an erection of the wall ( 5 ) beyond the erected position, and a seal ( 12 ) which in the erected position of the flood barrier section ( 1 ) is located between the flood barrier section and the ground ( 2 ), and that the flood barrier section ( 1 ) is adapted to, prior to flooding, expose the seal ( 12 ) to a positive sealing pressure exceeding a pressure caused by the weight of the flood barrier section ( 1 ), wherein the basis is formed by a support plate ( 13 ) located on the flooded side ( 10 ) of the wall ( 5 ), an edge ( 54 ) of the support plate distal to the wall ( 5 ) is hinged ( 22 , 23 , 24 , 30 ) to a permanent foundation ( 18 ) in the ground, and the seal ( 12 ) is located under the support plate ( 13 ), close to the edge ( 54 ) of the support plate ( 13 ) which is distal to the wall ( 5 ), the positive sealing pressure on the seal ( 12 ) being caused by a levering action due to the weight of the wall ( 5 ) and the hinge ( 22 , 24 , 30 ) to the permanent foundation ( 18 ).