Tool for releasing or closing tight screwed pipe connections

摘要

The tool is a development of Patent Application P 3504843.3. The development consists in insert jaws of various sizes being provided which can be inserted into the hexagon of the tool so that one tool can be used for screwed connections of various size. The jaws of the tool can be opened and closed by means of stoppers. The insert jaws have safety devices to prevent slipping. The mandrel is fastened in a laterally pivotable manner inside a jaw of the tool by means of a bolt. One and the same tool can thus be used for at least three sizes of screwed connections.