Patent ID: 8162027

Claim:
A combination of a door and doorframe defining a door opening, the doorframe comprising a horizontal header beam, the door opening having a horizontal top side and a horizontal bottom side, with the horizontal header beam defining the horizontal top side, the door comprising a top panel, a middle panel, a bottom panel, a first horizontal hinge member, a second horizontal hinge member and a third horizontal hinge member, each panel having a horizontal upper edge and a horizontal lower edge, the horizontal upper edge of the top panel is pivotally connected to the horizontal header beam by the first horizontal hinge member, the horizontal lower edge of the top panel is pivotally connected to the horizontal upper edge of the middle panel by the second horizontal hinge member, the horizontal upper edge of the bottom panel is pivotally connected to the horizontal lower edge of the middle panel by the third horizontal hinge member, wherein the door is movable between an open position with the horizontal lower edge of the bottom panel in an uppermost position and a closed position with the horizontal lower edge of the bottom panel in a lowermost position, the door is in the closed position when the top panel, the middle panel and the bottom panel are vertically aligned with one another and hanging downwardly from the horizontal header beam in a vertical plane of the door opening, with the horizontal upper edge of each panel above the horizontal lower edge of each respective panel, and the horizontal lower edge of the bottom panel is located in the lowermost position proximate to the horizontal bottom side of the door opening, the door is in the open position when the horizontal lower edge of the bottom panel is located in the uppermost position proximate to the horizontal header beam, with both the top panel and the bottom panel disposed above the middle panel and with the top panel, the middle panel, and the bottom panel forming a generally triangular shape in which the middle panel forms a bottom side of the generally triangular shape and the horizontal upper edge of the top panel is proximate to the horizontal lower edge of the bottom panel to form a top vertex of the generally triangular shape.