Abstract: The invention relates to method for the surface treatment of roof racks for motor vehicles, the roof racks being composed of aluminum and/or aluminum alloy. Provision is made whereby the surface is polished at least in certain areas to achieve a brilliant finish, and the polished surface is abraded at least in certain areas to achieve a satin-finish surface section. In addition, the invention relates to a corresponding roof rack.

Abstract: The invention relates to a roof railing for motor vehicles, comprising at least one rack bar and at least one support element associated with the rack bar, wherein the rack bar and support element are provided as separate components. According to the invention, the rack bar as well as the support element are provided as extruded components. The invention further relates to a corresponding method.

Abstract: A method for treating the surface of aluminum components or components comprising aluminum includes anodizing the surface. Anodizing includes introducing at least one pigmenting substance, particularly fully pigmenting substance, into depressions or pores open toward the surface of a comb or pore structure of the surface created by the anodizing process, and/or introducing oxidizable substances into depressions or pores open toward the surface of a comb or pore structure of the surface created by the anodizing process and oxidizing these substances. The method further includes applying a ceramic thin-film coating or siliceous sol-gel coating onto the surface. The ceramic thin-film coating or the sol-gel coating comprises a pigment particularly serving refraction purposes.

Abstract: The invention relates to a motor vehicle component, particularly a motor vehicle attachment part, preferably a motor vehicle exterior component, particularly preferred a motor vehicle trim component, made of anodized aluminum or an anodized aluminum alloy. The motor vehicle component is provided—at least partially—with a sol-gel coating. The invention further relates to a motor vehicle comprising a corresponding motor vehicle component.

Abstract: The invention relates to a roof rack system (1) for a vehicle, specifically for a passenger car, having at least one roof rail (2), which is configured in one piece and can be located on the vehicle body with an attaching device (13), wherein the roof rail (2) has a contact surface (27) extending over the length of the roof rail (2) which can be placed substantially continuously over its full length on the vehicle body (13) and is conformed to the vehicle body contour, and the attaching device has a retaining element (58) which is located in a cavity (60) of the roof rail (2) in the manner of a slot nut.

Abstract: The invention relates to a roof rack system for a motor vehicle, specifically for a passenger car, having at least one roof rack which has an attaching device for location on the roof of the vehicle, where the attaching device has at least one mounting bolt to pass through at least one roof opening. The invention is characterized by a seal (34) allocated to the mounting bolt (7), extending around the mounting bolt (7) and resting on the roof (3) with the roof rack installed and thereby surrounding the roof opening.

Abstract: The invention relates to a roof rack (1) for a vehicle having at least one tubular rail (2) extending essentially at a distance from the roof of the vehicle and at least two supports (5) at the ends of the rail to attach the roof rack (1) to the vehicle roof, where the rail (2) is shaped in its end areas (3) to have a curve (4) and in the area of each curve (4) is held from below by the support (5) which can be attached to the rail (2), the underside (11) of said support—when viewed in cross-section—forming a flat supporting surface (12) for a matching surface (13) on the rail (2).

Abstract: The invention refers to a spacing device for bridging a gap between a carrier part and a roof body and intended for fastening a roof rack, roof rail, roof strip or the like on a vehicle roof, with a support part and a counter-support part, the support part and the counter-support part being held together by a screw connection and being displaceable relative to one another to allow the adjustment of the bridging length, the support part and/or counter-support part being provided with an internally disposed adjustment tool-gripping seat intended for the manipulation and/or adjustment of the bridging length.