Pyrotechnic gas generator with plastic bonded charge
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United States of America Patent
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Dec 10, 2002
Grant Date -
N/A
app pub date -
Dec 18, 1997
filing date -
Dec 18, 1996
priority date (Note) -
Expired
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Abstract
The invention relates to a pyrotechnic gas generator (1) intended especially for motor vehicle safety. The generator (1) includes a pyrotechnic charge (12) of plastic-bonded powder of 'Lova' type and a gas exit orifice (14a, 14b) closed by an erodable ring (15) which has a cylindrical orifice (16) shut off by a cover (17). The rupture pressure of the cover (17) and the initial diameter of the orifice (16) are determined so as to avoid the initial extinction of the charge. In the course of functioning the diameter of the orifice (16) increases to avoid the risk of overpressure within the generator. The generator (1) can be employed in a protective device using an inflatable cushion.
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