Patent ID: 8857887

Claim:
A tonneau cover assembly for securing over a cargo box of a pickup truck; the tonneau cover assembly including: two side rails for securing to the cargo box; wherein the two side rails each include a receiving surface and a ferromagnetic material located on the receiving surface; and a cover having two longitudinal sides and two ends; the cover further including a plurality of magnets each of which is separately secured to one of the two longitudinal sides; wherein each of the plurality of magnets can removably secure one of the respective sides of the cover to ferromagnetic material of one of the respective side rails; wherein each side rail includes a channel having a lower edge and a top edge, the top edge including a ridge; wherein the cover rests upon the ridge when the cover is secured to the respective side rail and the respective magnets can abut against the respective ridge to prevent the respective magnets from sliding off of the ferromagnetic material when the cover is secured to the respective side rail so that the respective ridge can resist disengagement of the respective magnets from the receiving surface.