IMPROVEMENT FOR TOOLS THAT ARE USED TO TIGHTEN AND

LOOSEN THREADED FIXINGS

The removal of threaded fixings (nuts, bolts or similar) that have been in place for extended periods, seized in place, been over tightened or been under heavy load often requires brute force to remove them from their housing. Standard tools have a fixed length arm that will only allow for a single person to exercise a given amount of force onto the tool handle to remove the fixing. This invention allows for a tool to increase the torque strength of the user and thus allowing for greater force to be applied to the problem fixing. By rotating two arms about a common pivot point and therefore increase the overall length of a tool there is an increase in force that can be applied by the user.

If a tool that applies this invention is used to tighten any given threaded fixing, one should always be able to remove the same fixing with the same tool. This is achieved by allowing the tool arms to split, rotate and lock off when opened up for undoing the fixing (see drawings attached). The force applied to a tool to tighten the fixing will always be less than the force applied when undoing the fixing by opening up the arms to increase leverage.

The invention increases the amount of purchase power the user, therefore a tool, can apply when undoing threaded fixings. The invention must consist of at least two arms rotating around a pivot. When a tool is opened out about the pivot, the rotation of the arms is stopped by a stopper located on one of the arms. This stopper strikes the alternate arm prior to overlapping or rotating past one hundred and eighty degrees. It is this arresting of the rotating motion that allows for the increasing of the tools length and therefore increased pressure that can be applied over the tools new and increased length. When rotated in the motion to tighten a threaded fixing, the tool will fold back to its shortest length. Matching rebates in the head of the tool stop the arms passing each other whilst tightening a fixing.