US Patent 6997115 Steady table

A compact, hinged, foldably deployable table utilizes a main square or rectangular member which pivotally supports a pair opposing side members from a position flatly adjacent the main member to a position at a right angle from the main member. An overlying top frame section folds from a position parallel to the main member and adjacent the side members, to a position at a right angle with respect to the main member. Locking members in the top frame positively engage and stabilize the side members. An overlying top which fits exactly within the upper frame is carried by the frame and provides sturdy support.