Patent · US Expired

Linear drive for a belt pretensioner

US5842344A · kind A · utility

33Cited by

1References

6Claims

0Family size

Assignee

TRW Occupant Restraint Systems GmbH & Co. KG · DE

Inventor

Johannes Schmid · Schwäbisch Gmünd, DE

Key dates

Filing date	Dec 6, 1996
Grant date	Dec 1, 1998
Priority date	—
Expiry date	Dec 6, 2016

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R2022/4661
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A linear drive for a belt pretensioner is provided. The linear drive includes a cylinder tube with a hollow inner space, a pyrotechnic drive charge which generates a pressurized gas, and a piston able to be displaced in the inner space of the cylinder tube under the action of the pressurized gas. The piston has a hollow interior space and an axial end having an end wall. The end wall has a passage opening which is closed by a blow-out patch.

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