Patent attributes
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 incorporating vehicle. The coupling device includes a base part (6) which, when the coupling device is connected to the roof rail, is securely attached to the load carrier bar, and which base part is provided with a contact surface (8) which is positioned on the roof rail, as well as a tightening arrangement (17, 23, 26, 27) connected to the base part and comprising a tightening strap (27) and a tightening device (23), the tightening strap enclosing the roof rail and being tightened by the tightening device, and n this manner a contact area (30) on the contact surface (8) is pressed against the roof rail, thus achieving secure connection of the coupling device to the roof rail, the base part (6) being of a convex arched shape (31) in the area to the front of the contact area (30), with respect to the longitudinal direction of the vehicle, when the contact surface (8) is tightened against the roof rail, and that the side of the arched shape facing the roof rail (2) is made of a ductile material.