Patent · US Expired

Seat belt retractor

US5526996A · kind A · utility

55Cited by

4References

12Claims

0Family size

Assignee

TRW Repa GmbH · DE

Inventors

Ralf Ebner · Gaildorf, DE
John E. Grout · Forbes, AU
Volker Holzapfel · Wittenberg, DE
Albrecht Muller · Allschwil, CH
Gunter Weyhmuller · Alfdorf, DE

Key dates

Filing date	May 4, 1994
Grant date	Jun 18, 1996
Priority date	—
Expiry date	May 4, 2014

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R22/4619
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The seat belt retractor has a belt reel (12) rotatably mounted in a frame (10). A vehicle-sensitive latching mechanism includes a control disk (64) connected to the belt reel (12), rotation of which is lockable by means of the vehicle-sensitive inertial sensor (71, 71a, 73a, 75a). A belt tensioning drive engages the first axial end of a torsion bar (30), the second end of which is drivingly coupled to the belt reel (12). After belt tensioning the first end of said torsion bar (30) is blocked on the frame (10). Under the load subsequently introduced via the belt webbing (14) the torsion bar (30) is twisted about its axis for conversion of energy. The control disk (64) is connected to the belt reel (12) via a torque-limiting coupling (60, 62, 68, 74, 78; 92 to 106).

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