Patent ID: 7311299
Filing Date: 2007-12-25
Classification: C02F,Y02W,Y10S

Abstract:
1. An aeration device comprising: an elastic porous body in the shape of a cube or a rectangular solid and comprising an opening portion, an upper planar portion in the shape of a square or a rectangle, a wall portion connected to the upper planar portion at peripheral edges thereof, a lower planar portion in the shape of a flange and connected to the wall portion at a lower edge thereof along its entire length and a protruding portion formed on an upper surface of the lower planar portion along its entire length; a support base for supporting the porous body and comprising an orifice for feeding pressurized air to the porous body, a supporting portion for supporting the porous body from underneath the porous body and comprising an upper planar portion, a vertical wall portion connected to the upper planar portion of the supporting portion around a peripheral edge thereof, an attaching portion connected to the supporting portion for attaching the supporting portion to a pressurized air distribution pipe and a groove portion formed in a lower surface of the vertical wall portion along its entire length, the supporting portion being disposed in a space formed by the upper planar portion, the wall portion and the lower planar portion of the porous body; and a securing component for securing the porous body to the support base, wherein the porous body covers the supporting portion, the protruding portion of the porous body engages with the groove provided in the supporting portion and the securing component is attached to the circumference of and continuously covers peripheral edges of the porous body for applying uniform pressure to the porous body.