Abstract: A modular platform floor system for advantageous use at trade shows and conventions includes a plurality of interconnectable floor modules, wherein each module includes a supporting rectangular frame and a panel supported thereon, the platform having cutout, notched corners defining openings between two or more adjacently located floor modules, and plastic plugs which seat within these openings to interconnect the adjacently located modular units via downwardly depending prongs which engage the supporting frames of the modular units. Carpet pieces are secured separately to the top surfaces of the panels and to the plugs, to provide an aesthetic and comfortable surface for the floor. The plug is integrally formed, preferably of injection molded thermoplastic, to provide a unitary one piece plug for interconnecting the adjacently located floor modules.

Abstract: A modular display system is provided having a series of floor platforms which are secured together in edge-to-edge contact, by "plug-in" locks at the corners of two or more platforms. The locks engage floor frames below floor panels, through notches or cutout areas at the corners of the panels. Each lock engages at least two frames at their adjoining corners by downwardly projecting prongs, which preferably seat in the interior corner angles of the frames. The lock fits in the contiguous panel cutouts so that it is flush with the surface of the panels. Vertical columns may upstand from the locks, to support light boxes, shelving, tables, and the like.