Patent ID: 6764106
Filing Date: 2004-07-20
Classification: F16L

Abstract:
A coupling for attachment to a conduit, said coupling having a longitudinal axis and being comprised of:a tube having a first end, a second end and a longitudinal bore extending from said first end to said second end, said second end being adapted for insertion into said conduit, said tube further comprising an intermediate portion between said first and second ends having spaced first and second radially outwardly extending annular beads; and a tubular shell having a first portion and a second portion, said first portion being axially confined between said first and said second radially outwardly extending annular beads and having an inner surface with a first axial end and a second axial end, wherein at least one of said first and said second inner surface axial ends has a non-rounded, substantially elliptical shaped undercut located at the proximal end of said first portion and at least an abutting portion of said first bead is permanently deformed into a similar shape as said adjoining substantially elliptical shaped undercut as a result of the formation of said second bead, said second portion extending axially from said first portion to a free end and having an inner surface spaced radially and coaxially outwardly of the exterior of said tube second end to define an annular recess therebetween and being adapted to be inwardly deformed toward said tube second end.