Patent ID: 7900322

Claim:
A window assembly comprising: a frame defining an opening; a sash assembly receivable in the opening of the frame; at least one friction hinge operably coupling the sash assembly to the frame such that the sash assembly is selectively shiftable between a closed position in which the sash assembly is received in the frame to close the opening and an open position in which the sash assembly is disposed at an angle relative to the frame, the friction hinge comprising: a track on the frame; a spacer slidable along the track; a sash arm on the sash, the sash arm pivotally coupled to the spacer; a support arm pivotally coupled to the track and directly pivotally coupled to the sash arm at a first pivot; and a friction arm assembly including a one-piece friction arm pivotally coupled to the sash arm at a second pivot spaced apart from the first pivot, and a friction slider assembly pivotally coupled to the friction arm and slidable along the support arm, wherein the friction slider assembly frictionally engages the support arm to provide a biasing force resisting shifting of the sash assembly between the open position and the closed position.