EP 0836565 A1 19980422 - PYROTECHNIC DRIVE MEANS FOR A BELT PRETENSIONER
Title (en)
PYROTECHNIC DRIVE MEANS FOR A BELT PRETENSIONER
Title (de)
PYROTECHNISCHE ANTRIEBSEINRICHTUNG FÜR EINEN GURTSTRAFFER
Title (fr)
DISPOSITIF D'ENTRAINEMENT PYROTECHNIQUE POUR UN PRETENSIONNEUR DE CEINTURE
Publication
Application
Priority
- DE 29609691 U 19960531
- EP 9702839 W 19970530
Abstract (en)
[origin: WO9745300A1] The invention relates to pyrotechnic drive means for a belt pretensioner, said means having a working chamber (24) constructed in a housing, and a piston which can be moved in said housing and is pressurised by the gas pressure arising when a propellant charge (46) is activated in the working chamber (24). At least two propellant charges (36, 38) ignitable separately or simultaneously, and arranged in separate receiving chambers (32, 34) of the housing are provided to supply drive energy in a plurality of stages. The two receiving chambers (32, 34) and the working chamber (24) are connected to allow flow therebetween.
IPC 1-7
IPC 8 full level
B60R 22/46 (2006.01); F42B 3/04 (2006.01)
CPC (source: EP)
B60R 22/4628 (2013.01); F42B 3/04 (2013.01); B60R 2022/4657 (2013.01)
Citation (search report)
See references of WO 9745300A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DE 29609691 U1 19961017; CZ 27998 A3 19980513; EP 0836565 A1 19980422; JP H11510458 A 19990914; KR 19990036001 A 19990525; WO 9745300 A1 19971204
DOCDB simple family (application)
DE 29609691 U 19960531; CZ 27998 A 19970530; EP 9702839 W 19970530; EP 97927093 A 19970530; JP 54163197 A 19970530; KR 19980700665 A 19980130