US Patent 10488882 Electronic device hinge assembly

A hinge assembly for an electronic device comprises a first gear rotatable about a first axis of the hinge assembly and a second gear, rotatable about a second axis of the hinge assembly. A hinge housing holds the first gear in engagement with the second gear. A first hinge mounting element is configured to be movably fixed to a first leaf of the electronic device and a second hinge mounting element is configured to be movably fixed to a second leaf of the electronic device. A first pair of levers connects the first gear and the first hinge mounting element; and a second pair of levers connects the second gear and the second hinge mounting element.