Breathable gas generators
First Claim
1. A gas generating composition comprising about 3 wt % to about 20 wt % of a fuel, about 40 wt % to about 75 wt % of an oxidizer and about 5 wt % to about 25 wt % of a nitrogen producing component wherein the gas generated from the combustion of the composition produces a breathable gas composition having an oxygen content of about 20 to about 40 volume percent oxygen and about 60 to about 80 volume percent nitrogen and wherein the nitrogen producing component is present in sufficient mole percent such that the additional nitrogen gas generated by the nitrogen producing component results in a gas composition having the desired nitrogen/oxygen levels.
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Abstract
The present invention describes a pyrotechnic gas generating composition which upon reaction produces a breathable gas. The composition comprises a fuel, an oxidizer and a nitrogen source and can be useful in inflating passive restraint air bags for vehicles. Also disclosed is a method for inflating a passive restraint safety bag with a breathable gas composition of the subject invention.
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Citations
8 Claims
- 1. A gas generating composition comprising about 3 wt % to about 20 wt % of a fuel, about 40 wt % to about 75 wt % of an oxidizer and about 5 wt % to about 25 wt % of a nitrogen producing component wherein the gas generated from the combustion of the composition produces a breathable gas composition having an oxygen content of about 20 to about 40 volume percent oxygen and about 60 to about 80 volume percent nitrogen and wherein the nitrogen producing component is present in sufficient mole percent such that the additional nitrogen gas generated by the nitrogen producing component results in a gas composition having the desired nitrogen/oxygen levels.
- 5. A method of inflating an air bag restraint comprising causing a gas generator to be activated thereby creating a gas composition sufficient to inflate the air bag with a breathable gas composition having an oxygen content of about 20 to about 40 volume percent oxygen and about 60 to about 80 volume percent nitrogen and wherein the gas generating composition comprises about 3 wt % to about 20 wt % of a fuel, about 40 wt % to about 75 wt % of an oxidizer and about 5 wt % to about 25 wt % of a nitrogen producing component wherein the nitrogen producing component is present in sufficient mole percent such that the additional nitrogen gas generated by the nitrogen producing component results in a gas composition having the desired nitrogen/oxygen levels.
Specification