Air bag inflator
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United States of America Patent
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-
May 10, 2005
Grant Date -
Mar 18, 2004
app pub date -
Sep 13, 2002
filing date -
Sep 13, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The air bag inflator employs an injection piston assembly in which liquid propellant is delivered through nozzles in the injection piston to the combustion chamber. Metering of the liquid propellant is accomplished in a manner that is not sensitive to changes in ambient temperatures. A plug is slidably mounted between the propellant chamber and the nozzles to prevent flashback at startup. The plug is pushed forwardly to expose the nozzles to the propellant chamber in response to a predetermined pressure in the propellant chamber. A plug may also be fitted into each nozzle to be expelled into the combustion chamber upon opening of the nozzle. A tape may also be provided over the outlet of the nozzle to prevent flashback into the propellant chamber.
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