Patent ID: 9327681
Filing Date: 2016-05-03
CPC Classification: B60R

Claim Text:
1. A seat belt retractor for a vehicle restraint system having a belt webbing, the vehicle restraint system for use in a vehicle and comprising: a first and a second load limiting device, a two-part belt shaft which is rotatably mounted around a rotational axis in at least one leg of a frame and the belt shaft having a first part, onto which the belt webbing can be wound, and a second part, which can be locked in relation to the at least one leg of the frame using a locking device which can be actuated in response to a predetermined acceleration value of the vehicle or of the extraction of the belt webbing being exceeded, and the first load limiting device which upon activation enables a load-limited relative motion between the first part and the second part, and the second load limiting device which upon activation acts parallel to the first load limiting device, the first and the second part of the belt shaft overlap axially forming a ring shaped chamber adjacent the at least one leg of the frame, and the second load limiting device formed by a band element with a first portion which rests against a radial outer wall of the ring shaped chamber and with a second portion which rests against a radial inner wall of the ring shaped chamber having at least one deflection section extending between the first and the second parts, wherein the band element, upon a relative motion between the first and the second parts can be wound between the first and the second parts to absorb energy by the at least one deflection section deforming; wherein the first load limiting device is a speed-controlled load limiting device.