Curtain wall with internal weep means

Claim 1

A curtain wall comprising: a fixed casing comprising a plurality of substantially horizontal members including an upper horizontal header and a lower horizontal sill held in fixed spaced relation relative to each other, a plurality of vertical members arranged in spaced relation relative to each other interconnected between said horizontal members, said vertical members including vertical jambs attached to corresponding ends of said header and said sill, said curtain wall further including internal weep means, said internal weep means comprising a condensation reservoir means formed in said lower horizontal sill, vertical channel means formed in said vertical members, weep apertures formed in said vertical members, said lower horizontal sill member including at least one drain aperture formed on the upper surface thereof in communication with said condensation reservoir means formed therein, said condensation reservoir means and said vertical channel means communication through said weep apertures and said drain aperture, said condensation reservoir means comprising a lower and upper wall held in spaced relation relative to each other by a front and rear wall, the lower portion of said vertical members extending downwardly into said condensation reservoir means, the lower end of said vertical channel means adjacent said lower wall, said vertical members being disposed forwardly of said rear wall such that fluids flow from the upper portion of said curtain wall through said weep apertures into said vertical channel means into said condensation reservoir means including a discharge orifice to discharge moisture accumulated in said condensation reservoir means to the exterior of said curtain wall.