US Patent 7779587 Raised floor access panel

A raised floor access panel is provided which includes a substantially flat panel having an upper load supporting surface and a lower surface to be supported on a plurality of pedestal support members each adjacent to a corner of the panel, and at least one panel lifter having a top wall and two side walls, the side walls slidably extending through a first and second slots in a plate rigidly attached to the lower surface for vertical travel of the top wall and side walls upwardly, through a generally rectangular panel recess.