Patent ID: 8672366

Claim:
A coupling arrangement connecting facing ends of two pipe elements, comprising: external threads carried on a first pipe element; a second pipe element that carries a radially movable locking member with external locking profiles; a connection sleeve that comprises internal threads that are threaded onto said external threads and internal locking profiles that engage with said external locking profiles; wherein said connection sleeve is moved in a first axial direction towards said first pipe element by rotation on said external threads while said internal locking profiles are in an intermediate engagement with said external locking profiles, until said movement is limited by abutting faces of said internal and external locking profiles when possible axial clearances have been closed due to said first axial direction movement; wherein at least one of said abutting faces exhibits an inclination resulting in a pull of the connection sleeve towards an axial direction opposite of said first axial direction when said external locking profiles are moved radially outwards from said intermediate engagement to a position of further engagement of the internal locking profiles; and wherein said outwardly radial movement of the external locking profiles is provided by axial movement of a wedging member between an outer face of the second pipe element and the radially movable locking member.