A thrust chain device that induces an open thrust chain with a thrust portion and a housing portion, a thrust chain guide on a thrust portion of the thrust chain, a driving sprocket provided with teeth interlocking with the thrust chain, and a storage space of the housing portion, is provided. The storage space is parallel to the thrust portion and located opposite the thrust portion, the driving sprocket interlocks bilaterally with the thrust chain in a symmetric manner on the side of the thrust portion and on the side of the housing portion, the chain includes a connection portion between the thrust portion and the housing portion, arranged at a distance from the sprocket, the driving sprocket is in contact with the thrust chain by surfaces in the shape of an involute of a circle, the surfaces belonging to the teeth, where one tooth meshes with the chain while defining a line of action having an angle with the thrust portion between −10° and 10°, and the guide includes contact surfaces in synthetic material.