| 摘要 |
<p>The invention provides a blast-protective window frame construction system comprising an inner window-retaining frame (12) of extruded metal, the frame having in cross-section a first substantially L-shaped window-panel-retaining element (14), wherein the flange-like base (16) of the L-shaped element (14) is adapted to at least indirectly support an edge (28) of the window panel (18), and the back-like wall (22) of the L-shaped element (14) is adapted to at least indirectly support inner surfaces of the window panel (18), the L-shaped element accommodating window panels (18) of varying thickness; and an outer frame (30), attachable to a building and framing an opening (34) having an inner perimeter larger than the outer perimeter (36) of the window panel (18), whereby window panels (18) of increased thickness may project into the opening (34) without obstruction by elements of the outer frame (30).</p> |
