US Patent 7610656 Hinge for wings or doors

A hinge for wings or doors, in particular of electrical appliances, comprises a first element, a second element and a lever for connecting the first and second elements; the lever pivots on the second element and has a first arm integral with the first element to render the first and second elements movable relative to one another with a tilting action between a closed position and an open position; the second element consisting of a substantially box-shaped body containing a spring, inserted between the second element and a second arm of the lever so as to apply an elastic action to the lever.