A hand tool (1) comprising a first handle (2) and a second handle (3), which are pivotally arranged with respect to each other, a first jaw (4) that is fixed to said first handle (2), the first jaw (4) comprising a first crimp portion (6), and a second jaw (5) comprising a second crimp portion (7), wherein the first and second crimp portions (6,7) are arranged to be moved towards each other by actuation of the first and a second handle (2,3), so as to close a crimp opening (8) formed between said first and second crimp portions (6,7). The second jaw (5) is pivotally arranged with respect to the first handle (2) around a first pivot point (10), and with respect to the second handle (3) around a second pivot point (11) arranged at an upper end of said second handle (3), wherein the first handle (2) comprises a first resilient portion (12) between the first crimp portion (6) and the first pivot point (10), allowing the first crimp portion (6) to flex with respect to the first pivot point (10).

A hand tool (1) comprising a first handle (2) and a second handle (3), which are pivotally arranged with respect to each other, a first jaw (4) that is fixed to said first handle (2), the first jaw (4) comprising a first crimp portion (6), and a second jaw (5) comprising a second crimp portion (7), wherein the first and second crimp portions (6,7) are arranged to be moved towards each other by actuation of the first and a second handle (2,3), so as to close a crimp opening (8) formed between said first and second crimp portions (6,7). The second jaw (5) is pivotally arranged with respect to the first handle (2) around a first pivot point (10), and with respect to the second handle (3) around a second pivot point (11) arranged at an upper end of said second handle (3), wherein the first handle (2) comprises a first resilient portion (12) between the first crimp portion (6) and the first pivot point (10), allowing the first crimp portion (6) to flex with respect to the first pivot point (10).

A pliers tool (01) includes a hosting pliers that attaches to and manipulates a separate, principal use pliers (02) wherein the hosting pliers has as a first receiver and a first retainer as facilitated by a PLBA (50) that is connected to a first frontward ply (24a). The PLBA (50) is configured to receive and retain to a ply assembly of the hosting pliers a handle of the principal use pliers (02).

A pliers tool (01) includes a hosting pliers that attaches to and manipulates a separate, principal use pliers (02) wherein the hosting pliers has as a first receiver and a first retainer as facilitated by a PLBA (50) that is connected to a first frontward ply (24a). The PLBA (50) is configured to receive and retain to a ply assembly of the hosting pliers a handle of the principal use pliers (02).

A pair of pliers includes an upper structure, a lower structure including a lower handle, an over center linkage, and a lock member. The lock member is movable between a locking configuration and a release configuration. When the lock member is in the locking configuration, it prevents pivoting movement of the lower handle from a closed configuration and retains jaws of the pliers in a closed position. When the lock member is in the release configuration, it enables the lower handle to be moved away from the closed configuration and allows the jaws to move to an open position. Movement of the lock member from the locking configuration to the release configuration requires sequential movement of the lock member in a first direction and then in a second direction. The second direction is different than the first direction.

A pair of pliers includes an upper structure, a lower structure including a lower handle, an over center linkage, and a lock member. The lock member is movable between a locking configuration and a release configuration. When the lock member is in the locking configuration, it prevents pivoting movement of the lower handle from a closed configuration and retains jaws of the pliers in a closed position. When the lock member is in the release configuration, it enables the lower handle to be moved away from the closed configuration and allows the jaws to move to an open position. Movement of the lock member from the locking configuration to the release configuration requires sequential movement of the lock member in a first direction and then in a second direction. The second direction is different than the first direction.

The invention provides a ratchet clamp, comprising a first clamp arm, a second clamp arm and a ratchet mechanism provided between the first clamp arm and the second clamp arm. An elastic member is arranged between the ratchet mechanism and the second clamp arm. The ratchet mechanism includes a toothed bar, a pivoting member. The pivoting member includes a toothed piece, a housing and a lever. During clamping, the pivoting member pivots in whole within a certain range under the effect of the elastic member, and the toothed bar and toothed piece are engaged by undercut, maintaining the clamping force, and the elastic member protects the engagement between the toothed bar and the toothed piece from sliding apart. When opened, the interference fit between the toothed bar and the toothed piece enable the user to use small force pulling the lever to disengage the toothed piece, and also prevent accidental unloading force from opening the ratchet mechanism. The self lock state of the ratchet clamp of the invention is very safe and stable, the maximum clamping force at the jaw opening portion can reach about 50 Kg, and 85% of the maximum clamping force can be maintained after the user releases the clamp arms.

The invention provides a ratchet clamp, comprising a first clamp arm, a second clamp arm and a ratchet mechanism provided between the first clamp arm and the second clamp arm. An elastic member is arranged between the ratchet mechanism and the second clamp arm. The ratchet mechanism includes a toothed bar, a pivoting member. The pivoting member includes a toothed piece, a housing and a lever. During clamping, the pivoting member pivots in whole within a certain range under the effect of the elastic member, and the toothed bar and toothed piece are engaged by undercut, maintaining the clamping force, and the elastic member protects the engagement between the toothed bar and the toothed piece from sliding apart. When opened, the interference fit between the toothed bar and the toothed piece enable the user to use small force pulling the lever to disengage the toothed piece, and also prevent accidental unloading force from opening the ratchet mechanism. The self lock state of the ratchet clamp of the invention is very safe and stable, the maximum clamping force at the jaw opening portion can reach about 50 Kg, and 85% of the maximum clamping force can be maintained after the user releases the clamp arms.

An embedded element pulling apparatus, the apparatus comprises a pair of linear guides separated by a width, each linear guide having a length and an inner guide surface, the inner guide surface angled to form a closing ramp at the grasping end. A jaw is paired with each linear guide; each jaw is engaged to follow along the inner guide surface. Each jaw may have an interchangeable grasping tooth. A lock assembly is integrated to lock and unlock the jaws. A carriage cooperatively couples the jaws and the lock assembly. A positioning actuator engages with the carriage to position the jaws along the length of the linear guides and a drive actuator engages with the carriage to close the jaws, pull the embedded element, and open the jaws. A motive device may drive the positioning actuator and drive actuator.

An embedded element pulling apparatus, the apparatus comprises a pair of linear guides separated by a width, each linear guide having a length and an inner guide surface, the inner guide surface angled to form a closing ramp at the grasping end. A jaw is paired with each linear guide; each jaw is engaged to follow along the inner guide surface. Each jaw may have an interchangeable grasping tooth. A lock assembly is integrated to lock and unlock the jaws. A carriage cooperatively couples the jaws and the lock assembly. A positioning actuator engages with the carriage to position the jaws along the length of the linear guides and a drive actuator engages with the carriage to close the jaws, pull the embedded element, and open the jaws. A motive device may drive the positioning actuator and drive actuator.