Patent ID: 8291657

Claim:
An attack-resistant window assembly defining an attack side and a protected side, the assembly comprising: an attack-resistant pane having an attack-side major surface, a protected-side major surface and a peripheral edge; a base frame comprising: a pane supporting portion at least partially located beneath the attack-resistant pane and adapted to support the pane against gravitational forces, a mounting portion adapted to mount the assembly to a structure, and a flange defining an opening between the protected-side major surface and the flange; and a rear panel sized and shaped such that the rear panel is slidable between a first position spaced away from the base frame and the pane, and a second position on top of the pane supporting portion and at least partially within the opening defined by the flange such that the rear panel is positioned on the protected side relative to the pane, and abuts the protected-side major surface of the pane so that movement of the pane in a direction from the attack side toward the protected side is limited by the rear panel at least partially within the opening defined by the flange.