US Patent 7484788 Solid fold tonneau system

A tonneau system for a cargo box of a pickup truck having panels and hinge assemblies pivotally coupling the panels is provided. The hinge assemblies can define gutters to collect fluid and guide the fluid away from the cargo box. The hinge assemblies can include covers between pivoting components which can be configured to reduce friction during pivoting. The panels and hinge assemblies can include features to receive excess adhesive material during assembly.