Patent ID: 7341288

Claim:
A system in combination, comprising: a first pipe section; a second pipe section, wherein the second pipe section has a larger outside diameter than the first pipe section; a generally cylindrical sleeve body disposed in sleeved relationship around the first pipe section, the sleeve body having opposed ends, opposed first and second gasket engagement surfaces thereon and an inside diameter capacity, wherein the outside diameter of the second pipe section is larger than the inside diameter capacity of the sleeve body; a generally cylindrical adaptor body having a gasket engagement surface at a first end thereof and a gasket support surface at a second end thereof; a first flexible gasket disposed in sleeved relationship around the first pipe section, the first flexible gasket engaged with the first gasket surface of the sleeve body and having an inside diameter capacity, wherein the outside diameter of the second pipe section is larger than the inside diameter capacity of the first flexible gasket; a second flexible gasket engaged with the second gasket surface of the sleeve body and the gasket support surface of the adaptor body, the second flexible gasket having an inside diameter capacity, wherein the outside diameter of the second pipe section is larger than the inside diameter capacity of the second flexible gasket, and wherein the gasket support surface of the adaptor body axially supports the second flexible gasket and the second gasket engagement surface of the sleeve body; a third flexible gasket disposed in sleeved relationship around the second pipe section, the third flexible gasket engaged with the gasket engagement surface of the adaptor body; and first and second opposed end rings disposed in sleeved relationship around the first and second pipe sections, the second end ring having a larger inside diameter than the first end ring, the first and second end rings including circumferentially spaced bosses formed thereon, respectively, and respective pipe gripper members supported at the bosses and operable for gripping a surface of the first and second pipe sections, respectively, the first and second end rings engaged with the first and third flexible gaskets, respectively, to form a fluid tight coupling.