Patent ID: 7744126
Filing Date: 2010-06-29
Classification: B60R,F15B

Abstract:
1. A tensioning device for a seatbelt system in motor vehicles with a driving arrangement that comprises a tube having at least one tube section bent with a radius of curvature, and a piston guided movably in the tube, whereby the piston is connected via a driving cable to a part of the seatbelt system which carries out the tensioning movement, and whereby the piston is movable for longitudinal movement through the tube by means of a pyrotechnic drive, and the driving cable is fixed to the piston by a holding part held by the piston, the piston is configured having a generally ellipsoidal form with a larger radius in the longitudinal direction of the tube than the effective radius in the transverse direction of the tube and is provided with a bore for passing through the driving cable that is held in a compression sleeve fixed on the side of the piston that faces in the direction of movement of the piston.