Abstract: A ball screw drivel, in particular for a parking brake, comprises a threaded spindle, a spindle nut, and rolling bodies, namely balls, which are arranged in a thread turn between the threaded spindle and the spindle nut, Spring elements are arranged in the thread turn between nut-side stops. There is at least one setting of the threaded spindle and the spindle nut in which the balls and the spring elements are arranged in the thread turn with backlash.

Abstract: The invention relates to an aerodynamic wind propulsion device, particularly for watercrafts, comprising an aerodynamic wing being connected to a steering unit located below the aerodynamic wing via a plurality of tractive lines, a tractive cable, a first end of the tractive cable being connected to the steering unit and a second end of the tractive cable being connected to a base platform, the aerodynamic wing having an aerodynamic profile which generates an uplift force in the direction of the tractive cable when the airflow direction is about perpendicular to the tractive cable. According to the invention, an aerodynamic wing is provided being coupled to a steering unit located close below the wing via a plurality of tractive lines of different elasticity.

Abstract: The invention relates to an aerodynamic wing, including an upper deck extending in operation in a longitudinal direction and in a transversal direction; wherein the upper deck is shaped and arranged to produce a vertical lifting force which is oriented perpendicular to the longitudinal and the transversal direction when the aerodynamic wing is exposed to a wind flow in a direction oriented parallel to the longitudinal direction; wherein a plurality of ribs are connected to the upper deck, said ribs lying in a plane parallel to the direction of the vertical lifting force and the direction of the wind flow; the aerodynamic wing being coupled to a base platform arranged below the wing in service via a plurality of fastening lines, whereby the fastening lines are secured to the ribs of the wing, at least two fastening lines are secured to one rib at two line attachment points arranged at a distance from each other in the longitudinal direction; wherein the at least two line attachment points are connected to each

Abstract: The invention relates to an aerodynamic wind propulsion device, particularly for watercrafts, comprising an aerodynamic wing being connected to a steering unit located below the aerodynamic wing via a plurality of tractive lines, a tractive cable, a first end of the tractive cable being connected to the steering unit and a second end of the tractive cable being connected to a base platform, the aerodynamic wing having an aerodynamic profile which generates an uplift force in the direction of the tractive cable when the airflow direction is about perpendicular to the tractive cable. According to the invention, an aerodynamic wing is provided being coupled to a steering unit located close below the wing via a plurality of tractive lines of different elasticity.

Abstract: The invention relates to an aerodynamic wing, comprising an upper deck, wherein a plurality of ribs are connected to the upper deck, said ribs lying in a plane parallel to the direction of the vertical lifting force and the direction of the wind flow; the aerodynamic wing being coupled to a base platform arranged below the wing in service via a plurality of fastening lines, whereby the fastening lines are secured to the ribs of the wing, at least two fastening lines are secured to one rib at two line attachment points arranged at a distance from each other in the longitudinal direction; wherein the at least two line attachment points are connected to each other by a reinforcing load transfer line extending from the line attachment point of the first one of the two fastening lines to the line attachment point of the second one of the two fastening lines; whereby the reinforcing load transfer line is attached to the respective rib along substantially the whole length of the load transfer line and follows a curv