Air bag and method of construction
First Claim
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1. A safety apparatus including an air bag inflatable to an initial pressure, the air bag comprising:
- an inflatable portion formed of woven material and configured with a coating to reduce the flow of inflation gas thereacross to substantially a zero flow rate;
at least peripheral portions of the air bag configured to be joined along at least one path which defines the location of a corresponding first sewn seam comprising a plurality of stitches piercing corresponding first and second panels of the air bag, seam sealing means for sealing the stitches to control the flow of inflation gas thereacross;
wherein the seam sealing means includes an adhesive tape applied to a surface of each of the first and second panels along the path of the at least first sewn seam wherein the first sewn seam extends through the tape and through the panel to which it is attached.
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Abstract
A safety apparatus including a rollover air bag to protect an occupant of a vehicle during the rolling-over of the vehicle, the rollover air bag comprising: first and second panels of woven material that has been coated on at least one side thereof to reduce the porosity of material to substantially zero, the panels sewn together along a first sewn seam to define an inflatable portion of the air bag; seam sealing means for sealing the first sewn seam so that the internal pressure of the air bag at about five (5) seconds from the time the air bag is initially inflated is about 35 Kpa (about 3.5 psi).
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Citations
20 Claims
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1. A safety apparatus including an air bag inflatable to an initial pressure, the air bag comprising:
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an inflatable portion formed of woven material and configured with a coating to reduce the flow of inflation gas thereacross to substantially a zero flow rate;
at least peripheral portions of the air bag configured to be joined along at least one path which defines the location of a corresponding first sewn seam comprising a plurality of stitches piercing corresponding first and second panels of the air bag,seam sealing means for sealing the stitches to control the flow of inflation gas thereacross;
wherein the seam sealing means includes an adhesive tape applied to a surface of each of the first and second panels along the path of the at least first sewn seam wherein the first sewn seam extends through the tape and through the panel to which it is attached. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A safety apparatus including a rollover air bag to protect an occupant of a vehicle during the rolling-over of the vehicle, the rollover air bag comprising:
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first and second panel portions of woven material that have been coated on at least one side thereof to reduce the porosity of material to substantially zero, the panel portions configured to be sewn together sewn together along a predetermined path the coated side of the material configured to form exterior first and second panel portions;
a sealing tape applied to the exterior first and second panel portions; and
a sewn seam located along the predetermined path, the seam extending through the sealing tape and the panel portion to which it is attached. - View Dependent Claims (20)
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Specification