US Patent 6932226 Shelf rail clip and shelf display system

An attachment device for attachment to a shelf rail having a slot and an upper cavity. The attachment device includes an upper shelf rail insert for insertion into the slot, and a lower shelf rail insert for insertion into the slot beneath the upper shelf rail insert. The upper shelf rail insert has an upper lip for insertion into the upper cavity of the shelf rail. The present invention also provides a shelf display system having a shelf rail and a shelf rail clip. The shelf rail may have a female dovetail or semi-dovetail configuration. The shelf rail clip includes upper and lower shelf rail inserts that may have a male dovetail or semi-dovetail configuration for coupling the shelf rail clip to the shelf rail.