Patent ID: 8026461

Claim:
A clamping tool comprising a first element and a second element capable of relative displacement under the action of a drive mechanism, the clamping tool comprising a screw with a given pitch adapted to be driven in rotation about an axis in one direction or in the opposite direction under the action of a motor; a nut cooperating with the screw and adapted to be driven in translation in the direction of the axis of the screw, the nut being rigid in translation with the first element; a first guide section defining a linear guide parallel to the axis of the screw in order to lock the nut in rotation in a first phase of displacement of the nut; and a second guide section defining a helicoidal guide which extends along the axis of the screw and which second guide section has an inverted pitch relative to the pitch of the screw in order to allow rotation of the nut in the same direction of rotation as the screw in a second phase of displacement of the nut, the clamping tool further comprising a compensation system interposed between the first element and a mobile support rigid with the nut in order to reinitialize a position in which the nut leaves the first guide section to meet the second guide section, so that the first and second phases of displacement generated by the first and second guide sections remain synchronous.