Mechanical leak-proof coupling

Details Mechanical leak-proof coupling Mechanical leak-proof coupling

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/168 (2006.01) F16L 23/16 (2006.01) F16L 27/10 (2006.01) F16L 55/10 (2006.01)

Patent

CA 2252337

In order to provide a leak-proof coupling for a gas-carrying pipe having two pipe sections that are relatively movable, the coupling includes a first pipe section and a second pipe section that have respective coupling ends disposed in closely spaced adjacent relation to define a gap therebetween. The first pipe section has an upstream end in communication with a source of a pressurized gas and a first coupling end remote therefrom such that the upstream end receives the pressurized gas from the source and the gas then flows through the first pipe section from the upstream end to the first coupling end for discharge therefrom. The second pipe section has a second coupling end in communication with the first coupling end and receives the pressurized gas from the first pipe section and the gas then flows through the second pipe section from the second coupling end to the downstream end for discharge therefrom. Additionally, the coupling includes structure for providing a positive pressure differential in the region of the first and second coupling ends externally of the first and second pipe sections to prevent pressurized gas from being able to escape through the gap.

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