Barrier with movable curtain

摘要

A barrier includes a curtain vertically movable between a closed and open position. The curtain is interposed between right and left vertical tracks, which guide the curtain's movement. A drive unit raises and lowers a right edge of the curtain, while a clever strap system supports the curtain's left edge. The strap system includes a strap having one end fixed to an upper end of the left track and an opposite end fixed to a lower end of the right track. The strap runs across a leading edge of the curtain while passing across a left side roller and a right side roller mounted to opposite ends of the curtain's leading edge. The strap runs underneath the left roller to support the left side of the curtain. The strap runs across the top of the right roller to keep the strap from simply dropping out from underneath the left roller.