Patent ID: 6883279

Claim:
An outdoor window comprising: a window frame including a head, a sill having a flat top surface, and side jambs, wherein the window frame is disposed in an opening of a building which separates an indoor side and an outdoor side of the window frame; a sliding sash positioned inside the window frame to open and close the opening of the building; a drain groove provided on the flat top surface of the sill, the drain groove having an indoor wall and an outdoor wall defining a predetermined width therebetween; a water collecting groove provided immediately below the drain groove, the water collecting groove having a width wider than the width of the drain groove; a slide portion extending vertically downward from an indoor side wall of a bottom rail of the sliding sash to form a predetermined gap between an outdoor side of the slide portion and the outdoor wall of the drain groove; and a sealing member provided on the indoor wall of the drain groove in sliding contact with the slide portion; wherein a portion of the sealing member is pressed by the slide portion when a wind pressure is applied to the sliding sash from the outdoor side of the window frame, so that rainwater is drained through the drain groove.