US Patent 7597054 Collapsible desk

A desk that has a working platform which has a set of legs that are mounted on the bottom surface of the working platform. The legs are pivotable from a retracted position in juxtaposition with the working platform to an outwardly extended position located transverse to the working platform. Attached to each leg is a brace and this brace is swingable to engage the outer free end of the brace with an attaching plate that is fixed relative to the bottom surface of the working platform. There is a separate attaching plate for each leg. With the brace clamped to the attaching plate, each leg will be securely positioned in the extended position permitting the working platform to rest in a spaced relationship relative to a supporting surface permitting a chair to be used in conjunction with the desk with a human user to be located in the chair and the user to then perform tasks on the desk.