Abstract: A tonneau cover system for a pickup truck cargo bed incorporates a series of hidden collapsible snap heads used to retain the tonneau cover to an internal frame work which serves to secure the covering system to the cargo bed. These hidden snap heads are covered by the fabric covering of the cover and sewn to the underside of the covering fabric. The hidden snaps are received by a longitudinal hollowed cavities located within the outward rails of the internal frame work. By working in tandem the rails and cover provide slid-ability for accessing stowed cargo.

Abstract: A tonneau cover system for a pickup truck cargo bed includes two longitudinal side rails attached to at least one fore and aft cross rail. Located at the outer edges of the cross rails are a series of individual holes having interconnection to an integrated slot used in the lateral adjustment of an adjustable clamp assembly. A series of clamp assembly are used to secure a tonneau cover system to the top wall surfaces of a pickup truck cargo bed.

Abstract: A tonneau cover system for a pickup truck cargo bed incorporates an internal frame work having a spring loaded latch assembly used for the ease of opening or closing of a tonneau cover system.

Abstract: A tonneau cover system for a pickup truck cargo bed incorporates hinge assemblies to allow individual panels to open, close or fold over on top of each other. To provide individual compartments within a cargo bed, the main hinge assembly of a foldable tonneau cover system provides for a secondary hinge assembly for the addition of a pivoting lock in place isolation wall.