Abstract: Pliers, with two handles, one male (1) and another female (2) that are joined to each other by a joint bolt (3); where: the bolt (3) presents its reduction (31) centered and accompanied by two was (31a), (31b) which are housed in the orifice-housings (20); the spline (4) and the orifice-housing (5) are conjugated with each other and coaxial with the bolt itself (3); the spline (4) defines two corners (4a), (4b) opposite each other, to fit without turning in the orifice-housing (5), with conjugated shape; the female handle (2) defines a wall (2a) whose width is at least equal to the height of the spline (4): and the stud bolt (6) is threaded in the orifice (40) of the spline (4); the bolt (3) defines an eccentric orifice (40) with two zones (40a), (40b) of different sections; the last threaded, the means to prevent the turning of the bolt (3) with respect to the female handle (2) are an eccentric stud bolt (6) with two zones (60a), (60b) conjugated with those of the eccentric orifice (40) where it is mounte

Abstract: Pliers, with two handles, one male (1) and another female (2) that are joined to each other by a joint bolt (3); where: the bolt (3) presents its reduction (31) centered and accompanied by two was (31a), (31b) which are housed in the orifice-housings (20); the spline (4) and the orifice-housing (5) are conjugated with each other and coaxial with the bolt itself (3); the spline (4) defines two corners (4a), (4b) opposite each other, to fit without turning in the orifice-housing (5), with conjugated shape; the female handle (2) defines a wall (2a) whose width is at least equal to the height of the spline (4): and the stud bolt (6) is threaded in the orifice (40) of the spline (4); the bolt (3) defines an eccentric orifice (40) with two zones (40a), (40b) of different sections; the last threaded, the means to prevent the turning of the bolt (3) with respect to the female handle (2) are an eccentric stud bolt (6) with two zones (60a), (60b) conjugated with those of the eccentric orifice (40) where it is mounte

Abstract: Pliers, of the type comprised of two handles, one male and another female that are joined to each other by a joint bolt; and where the male handle defines a slotted window, of straight or curved configuration, the walls of which carry teeth or grooves along which the female handle can reach various working positions to vary the fastening capacity of the plier mouth. It is characterized in that the joint bolt is mounted on the female handle with means to prevent its turning; it is mounted on the female handle without axial displacement; and has conformations, such as a reduced zone or milling, in correspondence with said slotted window. It is also characterized in that it has means for the mutual locking/unlocking between handles without axial displacement of the bolt with respect to them.

Abstract: Pliers, with two arms that are joined together via an articulation pin. One of the arms has a protuberance with a lateral channel that extends via one of the orifices, a pusher being located in the channel and having an inner channel that accommodates a spring that acts between the pusher and the arm. The articulation pin is joined by means of screwing to the pusher in the region of the lateral channel, a toothed claw being arranged coaxially therebetween with mechanical continuity. The pusher is continued as an extension located on the walls of the other orifice in the work position. Applicable to hand tools.

Abstract: Pliers, with two arms that are joined together via an articulation pin. One of the arms has a protuberance with a lateral channel that extends via one of the orifices, a pusher being located in the channel and having an inner channel that accommodates a spring that acts between the pusher and the arm. The articulation pin is joined by means of screwing to the pusher in the region of the lateral channel, a toothed claw being arranged coaxially therebetween with mechanical continuity. The pusher is continued as an extension located on the walls of the other orifice in the work position. Applicable to hand tools.