Patent · US Active

Seat belt retractor and pretensioner combination

US7735871B2 · kind B2 · utility

2Cited by

7References

6Claims

0Family size

Assignee

Autoliv Development AB · SE

Inventors

Martin Schmidt · Windisch, CH
Stefan Bösch · Revenahe, DE
Thomas Schneider · Villa Park, US
Stefan Suhr · Elmshorn, DE
Erne Frey · Elmshorn, DE

Key dates

Filing date	Nov 30, 2004
Grant date	Jun 15, 2010
Priority date	—
Expiry date	Nov 25, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R2022/4642
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The invention relates to a seat belt retractor including a pretensioner especially for use in motor vehicles. The seat belt retractor includes a spool belt which supports belt webbing of the seat belt and rotates in the take-up direction of the safety belt when the pretensioning drive coupled to the belt spool is activated. The belt spool is associated with a drivewheel with recesses on the periphery thereof for accepting mass bodies acting as drive means for pretensioning the seat belt. The mass bodies are stored in a tube, which tangentially flows into the drivewheel, and the mass bodies are accelerated in the tube by means of a gas generator arranged at one end of the tube.

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