Patent ID: 7506786

Claim:
A coupling device ( 4 ) for connecting a load carrier bar ( 3 ) extending laterally across a vehicle roof to a roof rail ( 2 ), which rail extends in the longitudinal direction (L) of the vehicle, said coupling device comprising: a base part ( 6 ) which, when the coupling device is connected to the roof rail, is securely attached to the load carrier bar, said base part being provided with a contact surface ( 8 ) positioned on an upper surface of the roof rail, forming a contact area ( 30 ) between said contact surface ( 8 ) and the upper surface of the roof rail and a tightening arrangement ( 17 , 23 , 26 , 27 ) connected to the base part and comprising a tightening strap ( 27 ) and a tightening means ( 23 ); said tightening strap enclosing the roof rail and being tightened by said tightening means so that the contact area ( 30 ) of the contact surface ( 8 ) is pressed against the upper surface of the roof rail thus achieving secure connection of the coupling device to the roof rail; said contact surface ( 8 ) of said base part ( 6 ) being of a convex arched shape ( 31 ) at a front portion of the contact area ( 30 ) such that the curve of the convex arched shape is along the length of the roof rail; and a surface of the arched shape facing the roof rail ( 2 ) is made of a ductile material.