Patent · US Expired

Pretensioner for a safety belt drive

US5553890A · kind A · utility

32Cited by

8References

5Claims

0Family size

Assignee

TRW Repa GmbH · DE

Inventors

Erwin B uhr · Rösrath, DE
Volker Holzapfel · Wittenberg, DE
J urgen Petzi · Geislingen, DE
Klaus B ohmler · Rösrath, DE

Key dates

Filing date	Feb 10, 1995
Grant date	Sep 10, 1996
Priority date	—
Expiry date	Feb 10, 2015

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R22/4633
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A belt pretensioner for a safety belt comprises a pyrotechnic propellant charge (34) able to be operated by a fuze (48) and adapted to act on a drive device for a belt pretensioner. The drive device comprises a piston (18), adapted to be moved in translation, of a piston and cylinder unit. The pyrotechnic propellant charge (34) is mounted within the extent of a cylinder space (28) enclosed by the piston and cylinder unit. The fuze (48) is designed in the form of a self-contained unit and arranged separately from the propellant charge (34).

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