Building flood-protection hatch for cellar in flood-threatened zone has float coupled by scissor lever action to hatch

摘要

A building in a flood-threatened zone has cellar windows or vents (4) within a wall, with a horizontal exterior rail guide (6). The guide supports a hatch which is opened and closed by scissor-lever action. The scissor action is the result of rise and fall of an external float (2). The hatch has a seal (5).