Patent ID: 6102448
Filing Date: 2000-08-15
Classification: F16L,Y10S

Abstract:
An arrangement for connecting first and second pipe ends of a first and second pipe, respectively, the arrangement comprising:a first pipe having a first end and having a first sealing surface on the first pipe; a second pipe having a second end and having a second sealing surface on the second pipe wherein the pipe ends are movable toward each other in an axial direction to move the sealing surfaces toward each other;a first and a second closure part respectively at the first and the second pipe ends, the first and second closure parts being adapted to engage one another, and once engaged, the first and second closure parts have a first relative axial position; the closure parts being so shaped, where they engage one another that when they are rotated in one direction, they are moved from the first axial position with respect to each other to reach a second locked position at a second relative axial position closer to each other, the first and second closure parts also defining between them a bayonet-type closure;an annular sealing device disposed between the first and second sealing surfaces, the sealing device being shaped so that when the sealing device is positioned between the first and second sealing surfaces while the first and second closure parts are in the second locked position, the sealing device is clamped between the first and second sealing surfaces for providing a sealed closure of the pipe ends at the sealing surfaces, the bayonet connection of the closure parts being adapted to enable the sealing surfaces to be moved in the axial direction with respect to one another until the closure parts are moved into the second locked position, and the closure parts further enabling the sealing surfaces to be spaced apart sufficiently so as not to be sealed tightly against the sealing device when the closure parts are in the first position, and the closure parts being thereafter further movable with respect to one another by relative rotation thereof for moving the sealing surfaces into sealing engagement with the sealing device and for clamping the sealing device only in the axial direction.