US Patent 10296056 Bell crank linked hinge mechanism for a computing device

Examples disclosed herein provide a hinge mechanism to pivotally connect housings of a computing device along an axis. As an example, the hinge mechanism includes a first guide rail fixed to a first housing of the computing device, a second guide rail fixed to a second housing of the computing device, and an intermediate guide rail to connect the first and second guide rails to each other. As an example, the hinge mechanism includes a rotation assembly linked to the first guide rail via a bell crank, wherein a rotational axis of the rotation assembly is offset from the axis, and the rotation assembly is to provide a level of resistance to a torque provided when opening or closing the first housing with respect to the second housing.