US Patent 10159338 Universal piece of furniture consisting of panels

A multipurpose piece of furniture (1) has four square panels (3, 4, 6, 7), i.e., a first vertical side panel (3), a second vertical side panel (4) arranged parallel thereto, a third panel (6) that is arranged between an edge (5) of the first side panel (3) and an edge of the second side panel (4) at a right angle to the first side panel (3) and the second side panel (4) and that connects the first side panel (3) and the second side panel (4) into a U-shaped piece of furniture. The fourth panel is an intermediate panel (7) that is inserted into the piece of furniture between the first side panel (3) and the second side panel (4) at a right angle thereto and at a right angle to the third panel (6). At their four corners, the first side panel (3) and the second side panel (4) have recesses (33, 34) and/or projections (19, 20, 21, 22), wherein these are recessed in the corner regions of the side panels (3, 4) extending substantially in the shape of an elongated rectangle into the edges (5) of the side panels, or extending out of the edges in the shape of an elongated rectangle and running at a right angle to each other in their directions of elongation at each of the corner regions.