Patent ID: 7455000

Claim:
Pliers with variable size of wrench, comprising: a first gripper arm with an integrated pliers jaw; a second gripper arm operatively connected with a movable pliers jaw; the gripper arms movably interconnected to each other; a detent mechanism for locking being adapted for keeping the movable pliers jaw with the second gripper arm in a detent position for an initial adjustment; a first bearing contact formed at a front side and a second bearing contact formed at a rear side of the first arm, a longitudinal slot passing through the first gripper arm between the first and second bearing contacts defining a first pair of gripping surfaces at the front side and a second pair of gripping surfaces at the rear side; the second jaw movable about the first gripper arm and a projection disposed rearwardly of the second jaw, a guiding lug extending between the second jaw and the projection wherein the projection and the guiding lug together define a button-like projection with a T-shaped cross section, the guiding lug passing through the longitudinal slot of the first gripper arm, the second jaw having a first abutment surface facing the first pair of bearing surfaces, the button-like projection having a second pair of abutment surfaces facing the second pair of bearing surfaces; and the first pair of bearing surfaces cooperating with the first abutment surface, the second pair of abutment surfaces is adapted for slidable cooperation with the second pair of bearing surfaces of the first gripper arm, so as to guide the movement of the second jaw along the first gripping arm.