Patent ID: 8387176

Claim:
A rotational mechanism for extending a furniture piece, comprising: a first rotatable member configured to rotate about a first axis; a second rotatable member configured to rotate about a second axis; a link mechanism attached to both the first and second rotatable members, wherein the link mechanism is moveable along a length of the second rotatable member; a drive mechanism configured to position the moveable link at positions along the length of the second rotatable member such that movement of the link mechanism causes both the first and second rotatable mechanisms to rotate; and a folding mattress support frame, wherein the first rotatable member is connected to the folding mattress support frame such that rotation of the first rotatable member moves the folding mattress su ort frame from a folded sitting position to an unfolded reclining and fully extended sleep position, and wherein the folding mattress support frame comprises three sections pivotally connected together end-to-end, being: a first section connected to the first rotatable member which rotates with the first rotatable member about the first axis, a second section pivotally connected to the first section, a third section pivotally connected to the second section, and support wheels positioned underneath the third section, and wherein the first section is locked at a fixed acute angle to the first rotatable member.