Patent ID: 6679001
Filing Date: 2004-01-20
Classification: E05D,E05Y

Abstract:
A window system comprising:a frame having a top, a bottom, two sides and at least one elongated recess extending along at least one of said two sides of said frame; at least one slidable and tiltable sash disposed within said frame, said slidable and tiltable sash having two opposing sides; and a locking device attached to at least one of said two opposing sides of said at least one slidable and tiltable sash, said locking device being pivotable between an unlocked position to permit tilting of said slidable and tiltable sash, and a locked position which locks said slidable and tiltable sash to said frames; wherein said locking device comprises an elongated flange having one end connected along substantially an entire length of a side of the slidable and tiltable sash and having a free end, the free end of said elongated flange pivoting outward in the locked position to fit within said elongated recess; and wherein said locking device prevents bending of said slidable and tiltable sash and prevents air from infiltrating between said frame and said slidable and tiltable sash.