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US 6,283,507 B1Granted
Lightweight air bag
AssigneesAsahi Kasei Kogyo Kabushiki Kaisha, Nihon Plast Co., Ltd.
InventorsYoshinori Kami, Tadao Kanuma
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AssigneesAsahi Kasei Kogyo Kabushiki Kaisha, Nihon Plast Co., Ltd.
InventorsYoshinori Kami, Tadao Kanuma
Estimating the term…
An object is to provide an air bag to protect passengers during collisions, which is lighter and can be compactly accommodated, which is sufficiently airtight, and which has durable strength in the sewn parts. The invention relates to a lightweight air bag, wherein the air bag main body is constituted of a base fabric composed of a woven fabric which has been made using a raw yarn of less than 150 denier and a cover factor of 2100 or more or a basis weight of 140 g/m2 or less, and the air bag main body is preferably constituted of a base fabric having 10 g/m2 or less of a heat resistant elastomer applied thereon, at least part of the sewn areas relating to the air bag main body, particularly where a reinforcing fabric is sewn around the inflator fitting hole, being sewn with a sewing thread having a specific yarn number count T and stitch number S (stitches/centimeter), as indicated by the following Formulas: 10<T≦60 (1A) 2≦T/S≦8 (1B)(1).
A lightweight air bag composed of a plurality of members sewn together, the main body of the air bag constituted of a woven fabric which has been made using a raw yarn of less than 150 denier and has a cover factor of 2100 or more, at least part of the sewn areas relating to the air bag main body being sewn under conditions where the yarn number count T of a sewing thread and the stitch number S (stitches/centimeter) comply with the following Formulas (1) {Formulas (1A) and (1B)}:
A lightweight air bag composed of a plurality of members sewn together, the main body of the air bag constituted of a woven fabric which has been made using a raw yarn having less than 150 denier and has a basis weight of 140 g/m2 or less, at least part of the sewn areas relating to the air bag main body being sewn under conditions where the yarn number count T of a sewing thread and the stitch number S (stitches/centimeter) comply with the following Formulas (2) {Formulas (2A) and (2B)}:
Dependencies are inferred from the claim text.