Patent ID: 8474131

Claim:
A tool for joining a coupling element to a pipe comprising; a bundle of axially separated, radially movable segments parallel to a longitudinal axis of the tool, each said segment having axially spaced circular sector-formed ridges that provide the tool with a plurality of circumferentially extending ridges to expand against an inside surface of a pipe to deform a pipe wall at the ridges to create beads that project from an outside wall surface of a pipe into corresponding annular grooves of a coupling element to join a pipe to a coupling element, the segments further including a sector-formed projection that provides the tool with a circumferential extending projection to expand against the inside surface of a pipe at an open end of a pipe to flare an open end of a pipe such that an open end of a pipe that is joined to a coupling element does not obstruct fluid flow through the pipe, and wherein the segments have circumferential curved portions parallel to the longitudinal axis of the tool and located adjacent and between the circumferentially extending ridges, for a post-pressing of any buckled-in areas of a pipe that occur in a pipe wall between and adjacent the circumferential beads that are formed in a pipe wall during a first pressing action, such post-pressing of any buckled-in areas of a pipe producing a radially outward tension in a pipe at the location of the coupling element.