Pyrotechnic composition and method of inflating an inflatable device
First Claim
1. A pyrotechnic gas generating composition for generating a gas for inflation of an inflatable restraint, said composition consisting essentially of an organic fuel, an oxidizer and a viscosity modifier or precursor thereof, said organic fuel and said oxidizer upon combustion generating a gas and a non-gaseous constituent comprising a metallic salt or oxide, said metallic salt or oxide being in the form of a liquid having a viscosity of less than about 2,000 cps at the flame temperature of said composition, said viscosity modifier or precursor thereof being selected from the group consisting of alumina trihydrate, calcium sulfate, and mixtures thereof and being present in an amount effective to increase the viscosity of said liquid to at least about 10,000 cps.
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Abstract
A pyrotechnic gas generating composition comprising a fuel and an oxidizer, the composition upon combustion generating a gas and a non-gaseous composition comprising a metallic salt or oxide, the metallic salt or oxide being a highly flowable liquid at the flame temperature of the composition upon combustion, and a viscosity modifier which is present in an amount to render the liquid substantially non-flowable at the flame temperature. Also disclosed is a method of inflating an inflatable device, such as a vehicle safety restraint, comprising the step of substantially completely inflating the device with the gaseous composition products of combustion of the pyrotechnic composition, whereby the metallic salt or oxide is substantially prevented from entering the device.
41 Citations
11 Claims
- 1. A pyrotechnic gas generating composition for generating a gas for inflation of an inflatable restraint, said composition consisting essentially of an organic fuel, an oxidizer and a viscosity modifier or precursor thereof, said organic fuel and said oxidizer upon combustion generating a gas and a non-gaseous constituent comprising a metallic salt or oxide, said metallic salt or oxide being in the form of a liquid having a viscosity of less than about 2,000 cps at the flame temperature of said composition, said viscosity modifier or precursor thereof being selected from the group consisting of alumina trihydrate, calcium sulfate, and mixtures thereof and being present in an amount effective to increase the viscosity of said liquid to at least about 10,000 cps.
- 8. A method of inflating an inflatable device comprising the step of substantially completely inflating the device with the gaseous composition products of combustion of a composition consisting essentially of an organic fuel, an oxidizer and a viscosity modifier or precursor thereof, said composition upon combustion also generating a non-gaseous composition comprising a metallic salt or oxide in the form of a fluid having a viscosity of less than about 2,000 cps at the flame temperature of said composition upon combustion, said viscosity modifier or precursor thereof being selected from the group consisting of alumina trihydrate, calcium sulfate, and mixtures thereof and being present in an amount effective to increase the viscosity of said liquid to at least about 10,000 cps, whereby said metallic salt or oxide is substantially prevented from entering said device.
Specification
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- Resources
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Current AssigneeAllied Chemical Corporation (Honeywell International Inc.)
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Original AssigneeAllied Chemical Corporation (Honeywell International Inc.)
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InventorsGarner, Eugene F., Hamilton, Brian K., Jackson, Charles
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Primary Examiner(s)Miller, Edward A.
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Application NumberUS05/875,052Time in Patent Office907 DaysField of Search149/19.6, 149/35, 149/82, 149/83, 149/108.8, 149/75US Class Current60/205CPC Class CodesC06B 23/009 Wetting agents, hydrophobin...C06D 5/06 by reaction of two or more ...
