Inflatable curtain airbags
First Claim
Patent Images
1. A curtain airbag comprising:
- a central inflatable portion in communication with an inflator for producing inflating gas on deployment of the airbag;
at least one inflatable elongate portion extending adjacent said central inflatable portion, the at least one elongate portion having a diameter less than a diameter of the central inflatable portion; and
a frangible restraining strap secured around the central inflatable portion, the frangible restraining strap having one or more perforations formed therein whereby on deployment of the airbag, the frangible restraining strap delays inflation of the central portion by deflecting the inflating gas into the at least one elongate portion.
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Accused Products
Abstract
An inflatable airbag system for a motor vehicle includes a restraining strap for delaying inflation of a central portion of an airbag and deflecting gas into adjacent elongate portions in the initial stages of deployment.
14 Citations
20 Claims
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1. A curtain airbag comprising:
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a central inflatable portion in communication with an inflator for producing inflating gas on deployment of the airbag; at least one inflatable elongate portion extending adjacent said central inflatable portion, the at least one elongate portion having a diameter less than a diameter of the central inflatable portion; and a frangible restraining strap secured around the central inflatable portion, the frangible restraining strap having one or more perforations formed therein whereby on deployment of the airbag, the frangible restraining strap delays inflation of the central portion by deflecting the inflating gas into the at least one elongate portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A curtain airbag comprising:
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a central inflatable portion in communication with an inflator for producing inflating gas on deployment of the airbag, at least one inflatable elongate portion extending adjacent the central inflatable portion; and a frangible restraining strap secured around the central inflatable portion, the restraining strap having two folds, one side of a first fold attached to an adjacent side of a second fold, the first fold incorporating a series of perforations; wherein the frangible restraining strap delays inflation of the central portion by deflecting the inflating gas into the at least one elongate portion, and the first and second folds permit a two-stage inflation of the central portion. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A curtain airbag comprising:
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a central inflatable portion in communication with an inflator for producing an inflating gas upon deployment of the airbag, at least one inflatable elongate portion extending adjacent the central inflatable portion; and a frangible restraining strap having a plurality of rows of perforations, wherein at least some of the rows are configured with the number of perforations increasing from one row to the next; wherein the frangible restraining strap delays inflation of the central portion by deflecting the inflating gas into the at least one elongate portion, and the configuration of rows of perforations allows greater expansion in a preferred direction. - View Dependent Claims (17, 18, 19, 20)
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Specification