Patent · US Active

Force-limiting device for a seat belt system

US9969353B2 · kind B2 · utility

1Cited by

18References

12Claims

0Family size

Assignee

Autoliv Development AB · SE

Inventors

Ronald Jabusch · Elmshorn, DE
Klaus-Peter Singer · Hamburg, DE

Key dates

Filing date	Oct 13, 2014
Grant date	May 15, 2018
Priority date	—
Expiry date	Oct 13, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R22/38
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A force-limiting device (4) for a seat belt device having at least two parts (5, 11, 15) controlled with a frequency-dependent, defined movement for energy absorption, wherein the parts (5, 11, 15) that move the parts (5, 11, 15) undergo an undulating movement (Q) directed perpendicular to the feed movement (V) in the course of which the gearings (8, 10, 18, 19) alternatingly engage and disengage. An open spring washer exerts force to move the parts (5, 11, 15) toward one another and can be automatically increased after a preset belt extraction length. The spring washer (6) applies a varying spring force to the parts (5, 11, 15) moving toward one another during the movement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.