Patent ID: 8744538

Claim:
A device comprising: a lower panel having a track; an upper panel that overlays a face of the lower panel when the device is in a first position; a guide link including a head, an interface portion, and a body connecting the head to the interface portion, the head rotatably affixed to the upper panel and the interface portion being slidably retained in the track on the lower panel and at least a part of the interface portion being slidable in parallel to the face of the lower panel; and a cam shaft including a cam and a shaft rigidly connected to the cam, the cam rotatably affixed to the lower panel and an end of the shaft rotatably affixed to the upper panel, wherein when the lower panel and the upper panel are in a second position between the first position and a bi-stable position, the cam shaft moves the upper panel toward the first position, when the lower panel and the upper panel are in a third position between the bi-stable position and a fully flat position, the cam shaft moves the upper panel toward the fully flat position, and when the lower panel and the upper panel are in the fully flat position, the face of the lower panel and a face of the upper panel are in a substantially same plane, and wherein the lower panel and the upper panel are in the fully flat position when the body of the guide link is positioned parallel to the lower panel.