Patent ID: 9487184
Filing Date: 2016-11-08
CPC Classification: B60R

Claim Text:
1. A load limiting device for a motor vehicle comprising at least two parts which are controlled relatively to each other by means of a movement defined by a frequency, wherein the at least two parts moving relatively to each other each form meshing teeth and the movement defined by a frequency is effected by at least one of the at least two parts performing a wavelike feed motion relative to another of the at least two parts, during which feed motion the teeth of the at least two parts alternately engage and disengage, further comprising one or more masses, which are coupled to one of the at least two parts performing the wavelike feed motion in a coupled state, in which the one or more masses move with the one of the at least two parts in the wave-like feed motion, the one or more masses being uncoupled from the one of the at least two parts in an uncoupled state, in which a smaller total mass moves in the wave-like feed motion than in the coupled state, wherein at least one of the one or more masses is configured to move from one of the coupled state and the uncoupled state to the other one the coupled state and the uncoupled state during the feed motion, thereby changing the frequency, wherein the one of the at least two parts being coupled to a seat belt restraint system retractor for providing load limiting force control for the seat belt restraint system retractor.