Abstract: A device (1) for lowering flow noises has opposed first and second connection pieces (2, 3), and outer and inner sleeves (4, 5) between the connection pieces. A radial collar (6) is between the sleeves (4, 5) and forms separated volume chambers. Openings (11) in the inner sleeve (5) connect the volume chambers to a line space (13) enclosed by the inner sleeve (5). A sealing ring (15) at the free end (14) of the collar (6) defines a ring cap with a lateral surface (21) that reaches over the collar (6) and seals against the sleeve (4, 5) adjacent the free end (14) of the collar (6) and that has a surface (23, 26) that seals against either an end face (25) of the collar (6) or a side surface (28) of the collar (6) extending parallel to the radial collar (6).

Abstract: A wind turbine blade comprising a lightning protection system is provided. The lightning protection system comprises a lightning conductor located along a longitudinal portion of the wind turbine blade and is coupled to an electrical ground. A lightning receptor module is arranged on an external surface of the wind turbine blade and electrically coupled to the lightning conductor. An elongate receptor band is installed on the external surface of the wind turbine blade, over the lightning receptor module, and the receptor band is arranged to receive a stroke of lightning and transfer electrical current from the lightning stroke to the lightning conductor through the lightning receptor module. Further, the elongate receptor band comprises a crease in a longitudinal cross-sectional profile of the elongate receptor band. A method of installing a lightning protection system on a wind turbine blade is further provided.

Abstract: A ball joint with a housing formed entirely by a cold forming method. The housing having an inner chamber for receiving the joint ball of a ball pin and an opening through which the ball pin extends, and a contact area on the outer surface area of the housing forms a seal with a bellows. A forming section of the housing secures the joint ball within the inner chamber such that the joint pall can both rotate and pivot. Following completion of the housing, the material displaced during the cold forming method creates the forming section of the housing. The method for producing a ball joint comprises the steps of producing a metallic housing blank with a thickening formed by compression, forming the outer contour of the housing by compression, shaping the inner contour of the housing through dishing, and using the displaced material for creating the forming section.

Abstract: A wind turbine blade comprising a lightning protection system is provided. The lightning protection system comprises a lightning conductor located along a longitudinal portion of the wind turbine blade and is coupled to an electrical ground. A lightning receptor module is arranged on an external surface of the wind turbine blade and electrically coupled to the lightning conductor. An elongate receptor band is installed on the external surface of the wind turbine blade, over the lightning receptor module, and the receptor band is arranged to receive a stroke of lightning and transfer electrical current from the lightning stroke to the lightning conductor through the lightning receptor module. Further, the elongate receptor band comprises a crease in a longitudinal cross-sectional profile of the elongate receptor band. A method of installing a lightning protection system on a wind turbine blade is further provided.

Abstract: A radial joint with a metallic housing (1), through the opening (2) on one side of which a ball pivot (3) can be inserted into an interior space (4) of the housing (1). The housing (1) has, in the area of its opening (2), a section (7), which is prepared by machining and which is deformed by a cold forming process. A process for manufacturing a radial joint includes: manufacturing the housing blank, machining of section (7) close to the opening (2) of housing (1), inserting the joint ball (5) of ball pivot (3) into the interior space (4) of housing (1), cold forming of the opening-side edge section of housing (1) until a metallic overlap (13) is attained between the joint ball (5) and housing (1).

Abstract: A radial joint with a metallic housing (1), through the opening (2) on one side of which a ball pivot (3) can be inserted into an interior space (4) of the housing (1). The housing (1) has, in the area of its opening (2), a section (7), which is prepared by machining and which is deformed by a cold forming process. A process for manufacturing a radial joint includes: manufacturing the housing blank, machining of section (7) close to the opening (2) of housing (1), inserting the joint ball (5) of ball pivot (3) into the interior space (4) of housing (1), cold forming of the opening-side edge section of housing (1) until a metallic overlap (13) is attained between the joint ball (5) and housing (1).

Abstract: A ball joint with a housing formed entirely by a cold forming method. The housing having an inner chamber for receiving the joint ball of a ball pin and an opening through which the ball pin extends, and a contact area on the outer surface area of the housing forms a seal with a bellows. A forming section of the housing secures the joint ball within the inner chamber such that the joint pall can both rotate and pivot. Following completion of the housing, the material displaced during the cold forming method creates the forming section of the housing. The method for producing a ball joint comprises the steps of producing a metallic housing blank with a thickening formed by compression, forming the outer contour of the housing by compression, shaping the inner contour of the housing through dishing, and using the displaced material for creating the forming section.

Abstract: A radial joint is provided for a motor vehicle with a metallic housing (1), through the opening (2) on one side of which a ball pivot (3) can be inserted into an interior space (4) of the housing (1). The joint ball (5) of the ball pivot (3) is mounted pivotably and rotatably in a bearing area of the interior space (4), and a pivot section (6) of the ball pivot (3), which section is connected to the joint ball (5), protrudes from the housing (1) through opening (2) of housing (1). The housing (1) has, in the area of its opening (2), a section (7), which is prepared by machining and which is deformed by a cold forming process.