Dual stage pyrotechnic inflator
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United States of America Patent
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Jan 10, 2006
Issued Date -
N/A
app pub date -
Aug 14, 2003
filing date -
Aug 14, 2003
priority date (Note) -
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Abstract
The inflator has a first combustion chamber and a second combustion chamber. Gas generant contained in the first combustion chamber is independently ignited from gas generant contained in the second combustion chamber. A divider plate extends across the entire inflator dividing the inflator into a first combustion chamber and a second combustion chamber. The divider plate has a generally flat shape associated therewith. A first igniter of the inflator ignites the gas generant in the first combustion chamber, and the inflation gas from the burning of this gas generant passes through only a first filter and then exits the inflator via first exit ports. A second igniter of the inflator ignites the gas generant in the second combustion chamber. The burning of gas generant in the second combustion chamber produces inflation gas which travels through only the second filter and then through second exit ports. The first igniter and the second igniter are disposed on the same end of the inflator.
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