Patent ID: 7527306

Claim:
A pipe coupling comprising: a single gasket, a resilient mounting ring made of a flexible material and having a split and a circular recess in said resilient mounting ring for receiving the gasket, and a mounting flange having a cone shaped inner surface, wherein the mounting ring is elastically expandable and is integrally formed with an outer cone-shaped surface, said outer cone-shaped surface complementary to said cone shaped inner surface, and with an inner rib, wherein the rib fits into a circumferential groove formed in a first pipe upon elastically expanding the ring over the first pipe to hold the ring affixed to the first pipe, wherein the pipe coupling connects the first pipe to a counter-flange associated with a second pipe in a sealed manner when the ring is tightened towards the counter-flange, whereby said single gasket abuts said first pipe and abuts said resilient mounting ring in use.