Air bag having panels with different permeabilities
First Claim
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1. A vehicle air bag for use with an on-board inflator mechanism, said vehicle air bag comprising:
- a first panel of calendered uncoated fabric having a permeability of less than approximately 2 CFM at a pressure drop of 0.5 inches of water; and
at least one second panel of calendered uncoated fabric of a same yarn and weave type as said first panel operatively associated with said first panel, said at least one second panel having a permeability of greater than approximately 2 CFM at a pressure drop of 0.5 inches of water, at least one of said panels being constructed of a fabric having been processed to a controlled higher permeability subsequent to calendering.
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Abstract
A vehicle air bag including a first panel of calendered uncoated fabric with a permeability of less than approximately 2 CFM at a pressure drop of 0.5 inches of water and at least one second panel of calendered uncoated fabric of the same yarn and weave type as the first panel operatively associated with the first panel. The at least one second panel has a permeability of greater than approximately 2 CFM at a pressure drop of 0.5 inches of water. At least one of the panels is constructed of a fabric having been processed to a controlled higher permeability subsequent to calendering.
65 Citations
12 Claims
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1. A vehicle air bag for use with an on-board inflator mechanism, said vehicle air bag comprising:
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a first panel of calendered uncoated fabric having a permeability of less than approximately 2 CFM at a pressure drop of 0.5 inches of water; and at least one second panel of calendered uncoated fabric of a same yarn and weave type as said first panel operatively associated with said first panel, said at least one second panel having a permeability of greater than approximately 2 CFM at a pressure drop of 0.5 inches of water, at least one of said panels being constructed of a fabric having been processed to a controlled higher permeability subsequent to calendering. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle air bag for use with an on-board inflator mechanism, said vehicle air bag comprising:
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a first panel of calendered uncoated fabric having a permeability of less than approximately 2 CFM at a pressure drop of 0.5 inches of water; and at least one second panel of calendered uncoated fabric operatively associated with said first panel, said at least one second panel having a permeability of greater than approximately 2 CFM at a pressure drop of 0.5 inches of water, wherein at least one of said first and second panels is characterized by a multiplicity of needle punctures therein. - View Dependent Claims (11, 12)
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Specification