Air bag inflator
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United States of America Patent
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Mar 29, 2005
Grant Date -
Mar 18, 2004
app pub date -
Sep 13, 2002
filing date -
Sep 13, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The air bag inflator is particularly useful for mounting in a steering wheel of a vehicle for inflating an air bag. A magnetic control unit is disposed concentrically of an injection piston through which liquid propellant is injected from a liquid propellant chamber into a combustion chamber. In one embodiment, the injection piston and pump piston are contoured to define a contoured liquid propellant chamber. In a second embodiment, an annular injection piston is slidably mounted on an annular pump piston to define an annular liquid propellant chamber.
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