Patent ID: 6435495
Filing Date: 2002-08-20
Classification: B23K

Abstract:
A component for a back-up clamp, the component having a body, the body having an end face adapted to engage another section of the back-up clamp, the body carrying a number of shoes which can be moved radially inwardly and outwardly, each shoe being connected to a respective piston and cylinder arrangement, each piston and cylinder arrangement having an axis which is substantially radial, each piston having a first side and a second side, first means permitting pressurised fluid to be introduced to the first side of a piston and second means permitting pressurised fluid to be introduced to the second side of a piston so that the shoes can be positively driven outwardly and inwardly, the first means and the second means including respective first and second conduits within the body, wherein the first and second conduits open at the end face.