US Patent 9292049 Variable torque hinge with pass-through cable

A portable computer includes a base, at least one bracket anchored to the base, a display assembly, and a display bracket anchored to the display assembly. The portable computer also includes a hinge including a set of hinge components, a cam, and a shaft, the cam being connected to the at least one bracket, the shaft being connected to the display bracket, and the cam and the hinge components being connected to the shaft. A cable passes around the shaft. The cable is coupled to a point in the display assembly and to an area of the base.