Patent ID: 6871482
Filing Date: 2005-03-29
Classification: B67B

Abstract:
1. A device for screwing a cap onto the neck of a bottle or similar container, comprising a screwing head able to move axially along a screwing axis and able to rotate about said axis to transmit said rotation to an organ for gripping the cap, in synchronism with the axial movement of the head, to cause the screwing of the cap onto the bottle, in which said grip organ has a tubular shape, with an end mouth which is able to receive and grip within it the cap, in which inside said tubular grip organ is mounted in sliding fashion a thruster member, wherein said device comprises means for controlling the axial position of the thruster member inside the grip organ which are so shaped as to cause a lowering of the thruster member within the grip organ, thereby thrusting it against the cap during at least a time interval between an instant in which the cap bears down onto the bottle, before the start of its screwing thereon, and an instant that is subsequent to the completion of the screwing operation, when the screwing head rises again, moving away from the cap.