A tool includes a first member, a second member, a reinforcing device and a fastening assembly. The first member has at least one first working portion and a first pivoting portion. The second member has at least one second working portion and a second pivoting portion. The reinforcing device is arranged between the first member and the second member and configured to abut in surface contact against the first pivoting portion and the second pivoting portion. The fastening assembly inserts through the first pivoting portion, the second pivoting portion and the reinforcing device so that the first pivoting portion and the second pivoting portion are pivotally connected to each other.

A tool includes a first member, a second member, a reinforcing device and a fastening assembly. The first member has at least one first working portion and a first pivoting portion. The second member has at least one second working portion and a second pivoting portion. The reinforcing device is arranged between the first member and the second member and configured to abut in surface contact against the first pivoting portion and the second pivoting portion. The fastening assembly inserts through the first pivoting portion, the second pivoting portion and the reinforcing device so that the first pivoting portion and the second pivoting portion are pivotally connected to each other.

Disclosed is a release mechanism for locking pliers. The mechanism includes a center link and release link that work together to form an over-center lock with a release lever that acts sequentially on the center link and release link. The release lever can first contact the center link at a protrusion, and then contact a release link connected to the center link to release the over-center lock. User experience is therefore improved by a sequential unlocking operation that reduces the amount of leverage required to unlock the pliers.

Locking pliers according to an embodiment of the present disclosure can be easily unlocked by pressing a pressing unit of an opening lever with a thumb while gripping the levers with one hand, and the locking pliers can give tension to an object by pulling the object through the principle of leverage.

A cutter includes a blade, a handle, a holder, a pivot and a pin. The blade includes an aperture and a slit. The handle includes two lateral plates each of which includes an aperture and a recess. The holder includes a block formed between two lateral plates. The block is inserted in the slit when the blade is inserted in the holder. Each of the lateral plates of the holder includes a rear aperture and a front aperture. The pivot is selectively inserted in the apertures of the handle, the front apertures of the holder and the aperture of the blade to keep the holder in the handle. The pin is selectively inserted in the recesses of the handle and the rear apertures of the holder to keep the holder in a desired angle relative to the handle.

A cutter includes a blade, a handle, a holder, a pivot and a pin. The blade includes an aperture and a slit. The handle includes two lateral plates each of which includes an aperture and a recess. The holder includes a block formed between two lateral plates. The block is inserted in the slit when the blade is inserted in the holder. Each of the lateral plates of the holder includes a rear aperture and a front aperture. The pivot is selectively inserted in the apertures of the handle, the front apertures of the holder and the aperture of the blade to keep the holder in the handle. The pin is selectively inserted in the recesses of the handle and the rear apertures of the holder to keep the holder in a desired angle relative to the handle.

The invention relates to crimping pliers (1) having a pliers jaw (4) on which a die half (22) is supported. A crimping force biasing the die half (22) is sensed in the crimping pliers by a force sensor. The force sensor is a piezo foil (36) mounted to the pliers jaw. The force sensor senses the whole crimping force or only a crimping force component from which it is then possible to calculate the whole crimping force.

A pair of plumbing pliers includes two levers, a pawl and a torque spring. After adjusting the desired bite size according to a diameter of a pipe, the levers are pivoted relative to each other in a first range to clamp and release the pipe repeatedly to rotate the pipe. To adjust a bite size of the pair of plumbing pliers according to a diameter of another pipe, the levers are pivoted and then moved relative to each other in a second range. Little resistance is encountered in the first range. However, considerable resistance is encountered in the second range. Hence, the difference between the first and second ranges can easily be felt. Accordingly, it is not likely that a user will, by mistake, enter the second range, i.e., increase the bite size of the pair of plumbing pliers.

A pair of plumbing pliers includes two levers, a pawl and a torque spring. After adjusting the desired bite size according to a diameter of a pipe, the levers are pivoted relative to each other in a first range to clamp and release the pipe repeatedly to rotate the pipe. To adjust a bite size of the pair of plumbing pliers according to a diameter of another pipe, the levers are pivoted and then moved relative to each other in a second range. Little resistance is encountered in the first range. However, considerable resistance is encountered in the second range. Hence, the difference between the first and second ranges can easily be felt. Accordingly, it is not likely that a user will, by mistake, enter the second range, i.e., increase the bite size of the pair of plumbing pliers.

Pliers are provided. Pliers include an upper handle, a lower handle, an upper jaw coupled to the upper handle, and a lower jaw coupled to the lower handle. In general, the upper jaw includes workpiece engagement surface, such a first set of teeth configured to engage a workpiece, and the lower jaw includes a workpiece engagement surface, such as a second set of teeth and a third set of teeth. The lower jaw opposes the upper jaw such that the first set of teeth faces the second set of teeth and the third set of teeth. At least a section of the workpiece engagement surface of the lower jaw is movably coupled to the lower jaw such that it moves relative to the lower as torque is applied to a workpiece, thereby increasing torque applied to the workpiece.