US Patent 10214950 Hinge

A poly axial hinge comprising a mounting plate, a first arm pivotally coupled to a panel mounting element, a second arm pivotally coupled in an scissoring manner with the first arm by a main pivot, and a third arm pivotally coupled to the second arm at a location part way between a first end of said second arm and the main pivot. The mounting plate includes at least one rigidly fixed first gear, and the third arm includes gear teeth directly or indirectly coupled together with the fixed gear, such that rotation of the second arm with respect to said mounting plate causes rotation of the first arm with respect to the second arm, thereby driving the poly axle hinge open and/or closed.