Vehicle airbag inflator and related method
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United States of America Patent
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Sep 3, 1996
Grant Date -
N/A
app pub date -
Mar 10, 1995
filing date -
Mar 10, 1995
priority date (Note) -
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Abstract
A vehicle airbag inflator is provided which comprises a contained volume, a gas producing source for producing a main gas in the contained volume, an initiating system for causing the conversion of the gas producing source to the main gas, wherein the main gas comprises a working gas, and at least one exhaust orifice for providing an exhaust path for the working gas from the contained volume and for controlling the flow of the working gas as it is exhausted from the contained volume. The at least one exhaust orifice includes a contained volume closure for selectively creating a fluid-tight seal in the contained volume. The working gas creates a pressure-volume quantity in the contained volume (PV.sub.CV (t)). The working gas has associated with it a pressure-volume quantity for the cumulative amount of the working gas (PV.sub.cum (t)), and it also has associated with it a total pressure-volume quantity (PV.sub.total) when the gas producing source is fully converted to the main gas. The pressure-volume quantity in the contained volume (PV.sub.CV (t)) reaches a peak (PV.sub.peak) during the conversion of the gas producing source to the main gas that is at least about one half of the total pressure-volume quantity (PV.sub.total).
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