| 主权项 |
1. A door assembly for providing access to an enclosed space having an opening, the door assembly having a door covering the opening, a pair of spaced apart tracks defining the sides of the opening, the door comprising:
a door panel disposed between the pair of tracks; at least one actuator, the at least one actuator having a rod, the at least one actuator configured to move the rod up and down along one of the pair of tracks; a first pin fixed to the rod and pivotably mounted to the door panel; a link having a top end and a bottom end, the top end pivotally connected to a top portion of the door panel, the bottom end pivotably connected to one of the pair of tracks, the link configured guide the door from a closed vertical position to an open horizontal position, wherein movement of the rod from a bottom position to a top position simultaneously lifts the door and rotates the door about the first pin, and wherein the link limits the upward advancement of the door panel so as to guide a top portion of the door downwardly so as to provide access to the enclosed space. |
