Patent ID: 6712394
Filing Date: 2004-03-30
Classification: B60R

Abstract:
A tensioner for a safety belt, said tensioner comprising:a cylinder, a piston which is slidably arranged within said cylinder, a traction transfer means which is connected with said piston to transfer movement of said piston to said safety belt, and a drive for exerting a driving force on said piston to tension said safety belt, said piston including a deformation means which said traction transfer means engages, said deformation means being stable enough to withstand being plastically deformed when said driving force acts on said traction transfer means and being plastically deformed when a restraint force exceeding said driving force is acting on said traction transfer means, said deformation means comprises a deformation tube connected with said piston and a displacement member connected with said traction transfer means, said displacement member penetrating said deformation tube when a restraint force exceeding said driving force acts on said traction transfer means.