Method of improving ballistics by ignition system porting in an airbag inflator
First Claim
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1. A method of improving ballistics by ignition system porting in an airbag inflator, comprising:
- (A) igniting a pyrotechnic material contained within a squib;
(B) burning said pyrotechnic material contained within said squib;
(C) producing gas and heat from said pyrotechnic material to ignite an igniter material;
(D) igniting said igniter material;
(E) producing gas and heat from said igniter material; and
(F) venting said gas through a slot in an igniter tube to a gas generant, said slot having an inner opening and an outer opening, said inner opening having a smaller dimension than said outer opening.
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Abstract
An improved ignition system for vehicle airbags is described. This invention includes a novel means for venting igniter material gases in such a manner as to more evenly distribute the flow in a more disperse manner, thereby permitting the gas generant to burn more uniformly throughout the generant bed. This invention by venting igniter gases more efficiently produces improved airbag ballistics, namely lowered average airbag deployment delay and increased consistency of operation.
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Citations
19 Claims
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1. A method of improving ballistics by ignition system porting in an airbag inflator, comprising:
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(A) igniting a pyrotechnic material contained within a squib;
(B) burning said pyrotechnic material contained within said squib;
(C) producing gas and heat from said pyrotechnic material to ignite an igniter material;
(D) igniting said igniter material;
(E) producing gas and heat from said igniter material; and
(F) venting said gas through a slot in an igniter tube to a gas generant, said slot having an inner opening and an outer opening, said inner opening having a smaller dimension than said outer opening. - View Dependent Claims (2)
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3. An airbag inflator system, comprising:
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(A) an igniter tube, having an interior, an exterior and a slot for venting gas, said slot having an inner opening and an outer opening said inner opening having a smaller dimension than said outer opening;
(B) igniter material held in said interior of said igniter tube;
(C) a squib attached within said interior of said igniter tube;
(D) gas generant placed around said exterior of said igniter tube;
(E) a base attached to said squib; and
(F) a diffuser attached to said base. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. An improved airbag ignition tube, comprising:
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(A) an interior adapted for holding igniter materials;
(B) an exterior adapted for fitting within a region containing gas generant; and
(C) a slot for communicating gas from said interior to said exterior, said slot having an inner opening and an outer opening, said inner opening having a smaller dimension than said outer opening. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification