Patent ID: 8191206

Claim:
A hinge comprising: a box-shaped hinge body anchorable and one of a stationary support structure or a door; a pin disposed along a first longitudinal axis and anchorable to the other one of the stationary support structure and the door, the pin and the box-shaped hinge body being rotatably coupled such to rotate around the first axis between an open door position and a closed door position, the pin having a cam element defined therein; a closing member configured to automatically return the door from the open position to the closed position; a working fluid acting on the closing member to hydraulically counteract an action thereof, thus controlling door rotation from the open position to the closed position, wherein the closing member comprises a plunger element slidably movable in an operating chamber within the box-shaped hinge body along a second axis substantially perpendicular to the first axis between a compressed end position, corresponding to the open door position, and an extended end position, corresponding to the closed door position, the plunger element being having a pushing head interacting with a substantially countershaped seat of the cam element, wherein the closing member and the working fluid are both entirely housed in the operating chamber, and wherein the plunger element comprises a substantially cylindrical back portion and a front portion defining the pushing head, the cylindrical back portion being designed to separate the operating chamber into a first and a second variable volume compartments in reciprocal fluidic communication, further comprising a tubular element interposed between an inner surface of the operating chamber and the cylindrical back portion of the plunger element to define a first hydraulic circuit controlling a flow of the working fluid between the first and the second variable volume compartments, the plunger element being tightly housed in the tubular element, the tubular element being tightly housed in the operating chamber.