PIPE FITTING AND PIPE COUPLING ASSEMBLY EMPLOYING SUCH FITTING

摘要

A fitting for fixedly attaching to pipes and the like includes an inner a nd outer ring being coaxially provided over a pipe. The inner and outer ring s are preferably connected by means of a ratchet mechanism allowing for one way advancement there-between. Advancement of the outer ring over the inner ring radially compresses the latter thereby resulting in swaging of the pipe . The radial compression of the pipe results in the fitting being locked in place and prevents axial movement between the fitting and the pipe. Various apparatus are provided for advancing the outer ring over the inner ring. Cou pling assemblies are provided utilizing the fittings for forming joints betw een abutting pipes.