Patent ID: 7275462
Filing Date: 2007-10-02
Classification: B23P,B25B

Abstract:
1. A device for tensioning a threaded rod comprising an actuator capable of exerting an axial tensioning force, a puller for transmitting the axial tensioning force from the actuator toward a threaded end of the rod, the puller comprising at least two jaws which can move between a closed position in which the puller is in engagement with a threaded end of a rod, and an open position in which the jaws are disengaged from the threaded rod, and a locking element which can move between a stable position for opening the jaws and a stable position for closing the jaws, wherein the locking element comprises a sleeve sliding axially between the jaws and provided, over an axial segment of the sleeve, with bulges for separating the jaws.