Process for providing gradual deployment of an airbag and a pyrotechnic charge for its implementation
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United States of America Patent
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Oct 10, 2000
Grant Date -
N/A
app pub date -
Apr 10, 1998
filing date -
Apr 11, 1997
priority date (Note) -
Expired
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Abstract
The invention relates to the field of protecting the occupants of a motor vehicle by an inflatable airbag. The invention relates to a process consisting in inflating an airbag (1) by a pyrotechnic generator (2) containing a double-composition charge (9) formed around a main charge having a linear burning rate V.sub.1 and at least part of the ignition faces of which are covered with a skin of moderate pyrotechnic composition having a linear burning rate V.sub.2 satisfying the relationship: 0.05 V.sub.1 .ltoreq.V.sub.2 .ltoreq.0.5 V.sub.1. The invention thus makes it possible to inflate the airbag gradually during the first milliseconds of deployment of the latter.
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