| 摘要 |
<p>A water drain for insertion into a mating wall opening in an extruded, hollow door or window sash or frame. A round, rectangular or the like housing having at least one peripheral front flange defining a drain opening is adapted for abutment against a wall of the sash or frame, said housing having a top wall portion and a bottom wall portion perpendicular to the front flange, and a pair of opposed side wall portions, a baffle extending downwardly from the housing top wall portion for partially closing an upper portion of the drain opening, and a flap having a lower planar rear surface and an upper planar front surface for opening and closing lower and upper portions of the drain opening. The planar lower rear surface portion is joined to the upper front surface portion by a pivot axis, the planar lower surface being disposed forwardly of the upper planar front surface whereby the flap tends to gravitate to an at-rest, closed, substantially vertical position. The flap has a lug extension at each end of the pivot axis for insertion into mating holes in said side wall portions of the housing for pivotal mounting of the flap in the housing drain opening, whereby the flap planar lower surface can pivot from a substantially vertical at-rest closed position to an open position for the drainage of water.</p> |
