US Patent 10106022 Truck cover system

A truck cover system with a rail defining a cover slot that couples to a cover that extends over a bed of a truck. A clamp system couples the rail to a truck wall. The clamp system includes a first clamp frame that couples to the truck wall, and the first clamp frame includes first and second ends with respective first and second sets of teeth. The first set of teeth engages rail teeth on the rail, and a second clamp frame couples to the rail and to the first clamp frame to secure the rail to the truck. The second clamp frame includes third and fourth ends with respective third and fourth sets of teeth. The third set of teeth couples to the truck wall and the fourth set of teeth couples to the second set of teeth of the first clamp frame.