Patent attributes
A tonneau cover system for a cargo box of a pickup truck having a first tonneau section, a second tonneau section, and a third tonneau section. A first hinge system hingedly couples the first and second sections to permit pivotal stacked nesting of the first section relative to the second section. A second hinge system hingedly couples the second section to an attachment member assembly, which is connected to the cargo box, to permit pivotal stacked nesting of the combination of the first and second sections relative to the third section. Finally, a third hinge system hingedly couples the third section to a front mounting bar assembly, which is connected to the front wall of the cargo box, to permit pivotal movement of only the third tonneau section into a raised position.