Patent ID: 7603748

Claim:
A hinge comprising: a central bracket having a main arm having a first end; and a second end; a first arm formed perpendicularly on the first end of the main arm and having an outer surface; and at least one positioning detent formed in the outer surface of the first arm; and a second arm formed perpendicularly on the second end of the main arm; a first tilt hinge assembly connecting to the first arm of the central bracket and comprising a tilt shaft connecting rotatably to the first arm; a resilient stationary positioning spacer mounted securely on the tilt shaft adjacent to the outer surface of the first arm and having an inner surface having an annular edge abutting the outer surface of the first arm; an outer surface; a central protrusion formed axially around a central of the outer surface of the stationary positioning spacer; and at least one positioning protrusion formed on the inner surface of the stationary positioning spacer and corresponding to and selectively engaging the at least one positioning detent of the first arm; and a first rotating bracket mounted securely on the tilt shaft and having a main leaf; and a central protrusion formed axially around a central of an inner surface of the main leaf of the first rotating bracket and abutting the central protrusion of the stationary positioning spacer; a second tilt hinge assembly connecting to the second arm of the central bracket and comprising a barrel connecting securely to the second arm of the central bracket; and a second rotating bracket mounted rotatably on the barrel; and a rotating hinge assembly connecting to the main arm of the central bracket and comprising a central shaft connecting rotatably to main arm of the central bracket; and a fastening bracket mounted securely on the central shaft.