High leverage locking-type pliers incorporating a four bar linkage system adapted to amplify force applied by the user to an object gripped between jaws of the pliers. The pliers include first and second handles, first and second jaws, and a center link rotatably or pivotally coupled to the first and second handles. A first link pivot where the center link rotatably or pivotally couples to the second handle may be a first distance L1 away from a second jaw pivot where the second jaw rotatably or pivotally couples the second handle. A first jaw pivot where the second jaw rotatably or pivotally couples the first handle is a second distance L2 away from the second jaw pivot. In an embodiment, the first distance L1 is about 34% to about 70% of the second distance L2.

A connector tool assembly for compressing solar panel connectors together includes a pair of pliers and a pair of members that is each coupled to a jaw associated with a respective one of the pliers. A pair of grips is provided and each of the grips is coupled to a respective one of the members. Each of the grips has a slot extending therethrough to accommodate a conductor of a respective one of a pair of solar panel connectors having the solar panel connectors positioned between the grips. Each of the grips is urged toward each other when the pair of pliers is manipulated into a closed position. In this way each of the grips compresses the solar panel connectors into a connected condition.

A connector tool assembly for compressing solar panel connectors together includes a pair of pliers and a pair of members that is each coupled to a jaw associated with a respective one of the pliers. A pair of grips is provided and each of the grips is coupled to a respective one of the members. Each of the grips has a slot extending therethrough to accommodate a conductor of a respective one of a pair of solar panel connectors having the solar panel connectors positioned between the grips. Each of the grips is urged toward each other when the pair of pliers is manipulated into a closed position. In this way each of the grips compresses the solar panel connectors into a connected condition.

Cutting pliers include a first plier body and a second plier body. The first plier body includes a support end and a first handle coupled to each other. The second plier body includes a cutting end and a second handle coupled to each other. The first handle and the second handle are rotationally coupled by a connecting shaft. The support end and the cutting end cooperatively form jaws for cutting a pipe. The support end comprises a convex arcuate surface for supporting a pipe. The cutting end comprises two clamping arms and a blade. The blade is arranged between the two clamping arms. When the jaws are closed, a clamping end of the clamping arms abuts against the pipe, the pipe on the arcuate support surface is squeezed and deformed along the arcuate support surface to form an arcuate pipe, and the blade abuts against the arcuate pipe.

Cutting pliers include a first plier body and a second plier body. The first plier body includes a support end and a first handle coupled to each other. The second plier body includes a cutting end and a second handle coupled to each other. The first handle and the second handle are rotationally coupled by a connecting shaft. The support end and the cutting end cooperatively form jaws for cutting a pipe. The support end comprises a convex arcuate surface for supporting a pipe. The cutting end comprises two clamping arms and a blade. The blade is arranged between the two clamping arms. When the jaws are closed, a clamping end of the clamping arms abuts against the pipe, the pipe on the arcuate support surface is squeezed and deformed along the arcuate support surface to form an arcuate pipe, and the blade abuts against the arcuate pipe.

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.

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.

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.