Patent ID: 9267322
Filing Date: 2016-02-23
CPC Classification: E02B,E05F,E06B

Claim Text:
1. A flap gate water-resistant panel for wall installation, serving as a disaster prevention panel which closes an opening located in an elevated location of a wall of a building, the panel comprising: a door bumper disposed on an outer peripheral wall of the opening, and side door bumpers located on opposite sides of the door bumper, a door body which closes the opening and which is attached between the side door bumpers so as to freely swing upwards, wherein a lower portion of the door bumper serves as a fulcrum when the door body swings upward, wherein the door body has first and second ends, wherein the first end is closer to the wall in a stand-by state before engagement with water than the second end, wherein the door body is inclined relative to a horizontal plane in the stand-by state before engagement with water; a receiving member that supports the second end of the door body in the stand-by state; and a current rectifier installed at the lower portion of the door bumper, wherein when water flows in an initial direction towards the panel, and then vertically upward towards the panel, the current rectifier changes a direction of the water flow from the vertically upward direction to the initial direction.