Patent ID: 8087280

Claim:
Pliers for changing the distance of two operating areas of two elements of a connection for conduits, wherein the change of said distance coincides with a plastic radial deformation of at least one of the elements, said pliers comprising: a) two hand levers, b) two spreading jaws, c) means for transferring a manual force applied by a user upon said hand levers with a transfer ratio to spreading forces acting upon said spreading jaws, d) wherein said means is designed and arranged such that with a closing movement of said hand levers the distance of said spreading jaws is increased, wherein an increase of the distance of said spreading jaws results in a plastic radial deformation of at least one element of the connection, e) means, interposed between said spreading laws and two spreading elements, for transferring a pivoting movement of said spreading jaws into a translational movement of said spreading elements along a spreading axis or into a parallel movement of said spreading elements, f) means for directly guiding said spreading elements against each other along said spreading axis with a translational degree of freedom; and g) said spreading elements being rotatable with respect to said spreading axis.