Patent ID: 8215416

Claim:
A device for assisting the actuation of a tool, the device comprising two arms able to move in rotation about an axis between an open position in which the arms are distant from each other and a closed position in which the arms are close to each other, the device further comprising a cable, an end part of which is associated with one of the arms, the other end part of the cable being disposed in a cable tensioner, the tensioner being associated with the other arm, the device further comprising an actuator operably actuating the tensioner between an open position in which the cable is slack, the arms being in the open position, and a closed position in which the cable is tensioned so as to make the arms pass into their closed position, the device further comprising a force sensor for the actuation of the arms by a user, the sensor being coupled to the actuator so that the tension force of the cable is proportional to the force of actuation of the arms by the user.