Patent ID: 7819167

Claim:
A window assembly, the window assembly comprising: a window frame comprising: a pair of spaced-apart side frame members; a first end frame member connected to a first end of the pair of side frame members, said first end frame member comprising a substantially planar window sash contact surface; and a second end frame member connected to a second end of the pair of side frame members opposite the first end of the pair of side frame members; at least a pair of spaced-apart guide tracks, each of the pair of spaced-apart guide tracks being connected to a respective one of the side frame members; at least one window sash mounted to and positioned between the at least a pair of spaced-apart guide tracks and being slidably movable along the guide tracks between an open position wherein an end of the at least one window sash is spaced apart from the first end frame member and a closed position wherein the end of the at least one window sash abuttingly contacts the first end frame member window sash contact surface; a foldable and spreadable continuous seamless pleated screen, said pleated screen comprising a single integral continuous unitary seamless flexible screen element, and at least two tubes, each of the tubes being located within a respective one of the at least a pair of spaced-apart guide tracks, each of the tubes traversing holes in a respective one of the side ends of the pleated screen and each of the tubes being housed within a respective one of the side frame members, wherein the pleated screen has a first screen end mounted to the end of the at least one window sash and a second screen end mounted to the first end frame member so that the pleated screen extends when the at least one window sash is in the open position and the pleated screen folds onto itself when the at least one window sash is in the closed position, wherein a second end of one of the window sashes opposite the first end comprises a pivotable flap having an extremity in movable contact with another one of the pair of window sashes, and wherein the end of the at least one window sash comprises a cavity formed therein extending substantially the length of the end of the at least one window sash and the pleated screen is housed within the cavity when the at least one window sash is in the closed position.