Abstract: A storm curtain assembly (10) includes a header (11) and side rails (13) extending downwardly from each end of the header (11). A roll (15) is positioned in the header (11) and carries a fabric curtain (14) which has one end attached to the roll (15). A bar (16) is attached to the other end of the fabric curtain (14). A track (20) is formed on each side rail (13), and the edges of the fabric curtain (14) are normally received in the tracks (20). One of the walls (18) which forms the track (20) terminates at an upper edge (21) which is spaced from the header (11) so that if an edge of the fabric curtain (14) is displaced from the track (20), the displaced edge will be allowed to be received in the track (20) as the fabric curtain (14) is being received on the roll (15).

Abstract: An assembly for covering a building opening that provides a shaft positioned at one end of the building opening, a curtain carried by the shaft, and a locking mechanism at the opposed end of the building opening from the shaft that selectively holds the curtain in a locked position to cover the building opening. The assembly also includes an input for selectively rotating the shaft, and a linking assembly adapted to transfer the input to the shaft to selectively rotate the shaft, wherein the linking assembly includes a failsafe portion designed to fail upon a predetermined impact force on the curtain. An operator is also provided to allow controllable movement of the curtain between the various positions.