Patent ID: 6739630
Filing Date: 2004-05-25
Classification: F16L

Abstract:
A pipe joint between a pair of cylindrical pipes comprising:a pair of elongated cylindrical pipes, each pipe having an externally threaded end portion and an externally unthreaded opposite spigot end portion; a cylindrical coupling member having an internally threaded first end portion; said coupling member having a second end portion with an internal shoulder and a pair of axially-spaced internal circumferential grooves therein; said internal grooves including an internal sealing ring groove adjacent said shoulder and an internal spline receiving groove on the opposite side of said sealing ring groove from said shoulder; a transverse spline receiving opening through said second end portion of said coupling member in alignment with said internal spline receiving groove; said externally threaded end portion on a first one of said pair of pipes being threadably received in said internally threaded first end portion of said coupling member; said spigot end portion on a second one of said pair of pipes being received in said second end portion of said coupling member; said spigot end portion having a circumferential external spline receiving groove aligned with said internal spline receiving groove in said coupling member; a sealing ring received in said internal circumferential sealing ring groove and being in sealing engagement with said spigot end portion; and a spline received in said aligned internal and external spline receiving grooves through said spline receiving opening to inhibit relative longitudinal movement between said spigot end portion and said coupling member.