US Patent 7367159 Dual overhead track for a sliding door

A sliding door for selectively opening and closing an opening. The door comprises a first guide track defining a first linear guide path and a second guide track defining a second linear guide path. The second guide track is spaced from the first guide track. The door further comprises a door panel having a top edge, a bottom edge, a leading edge and a trailing edge. The door panel is adapted to translate laterally relative to the opening between a closed position and an open position. A first portion of the door panel is attached to the first guide track and a second portion of the door panel is attached to the second guide track. The door moves vertically as the door is translated from the open position to the closed position as rollers engage recesses positioned on the first and second guide tracks.