Patent ID: 8523485

Claim:
A flotation structure for a buoyant flood protection barrier comprising: a flotation body adapted to rise and fall with flood water; a flexible membrane sealed at an upper region thereof to the flotation body and sealed to a housing at a lower region thereof; and a plurality of panels hinged by means of hinge pins about substantially parallel horizontal axes, a topmost panel being hinged to the flotation body, a lowermost panel being hinged to the housing substantially at ground level, and intervening panels being hinged to each other, wherein a scissor arrangement is pivotably mounted at an upper end to the flotation body and pivotably mounted at a lower end, arms of the scissor arrangement being selected such that the arms cross at a point adjacent to each of the axes about which the panels are hinged to each other and which is adjacent to the scissor arrangement, each said crossing point being pivotally connected by a pivot pin to a member provided on a respective hinge pin.