US5100168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air bag for vehicles
Assignee: Toyoda Gosei Co Ltd
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Filing: 1991-04-05
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Granted: 1992-03-31
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Expires: 2011-04-05
Abstract
Abstract An air bag for vehicles is formed by a pair of sheets of composite materials for bags sewed together with a sewing thread at their peripheral portions which are inside the bag. A sewing thread protecting layer made of a rubber compound covers the exposed portions of the thread. Each of the sheets consists of a base fabric for bags and a heat-resistant film of a chloroprene rubber compound laminated on the inside surface of the base fabric. The sewing thread protecting layer is made of a rubber compound containing a blend polymer of ethylene propylene rubber and choroprene rubber with the blending formula by weight of the former and the latter being from 30/70 to 70/30.
Inventors
- 👤 Noriyuki Horiuchi
- 👤 Hiroyuki Kobayashi
- 👤 Kenji Yano
- 👤 Shinichi Saito
- 👤 Masahiko Ozeki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:11
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/10; B32B25/14; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/235; B32B2270/00; B32B2305/00; B32B2305/10; B32B2305/18; B32B2307/00; B32B2307/30; B32B2307/306; B32B2319/00; B32B2439/00; B32B2439/40; B32B2439/46; B60R21/231; B60R2021/23123; B60R2021/23571; B60R2021/23576; B60R2021/23595; B60R21/239
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
An air bag for vehicles comprising: a pair of sheets sewed together with a sewing thread at their peripheral portions to form a bag, said sheets each comprising a base fabric for bags and a heat-resistant film of a chloroprene rubber compound laminated on one side of said base fabric, said peripheral portions and said film being inside said bag, and a sewing thread protecting layer made of a rubber compound and covering the exposed portions of the threads, wherein the rubber compound of said layer comprises a blend polymer of ethylene propylene rubber and chloroprene rubber with the blending formula by weight of the former and the latter being from 30/70 to 70/30.
Claim 2
Dependent Claim
114 words
An air bag for vehicles comprising: a pair of sheets sewed together with a sewing thread at their peripheral portions to form a bag, said sheets each comprising a base fabric for bags and a heat-resistant film of a chloroprene rubber compound laminated on one side of said base fabric, said peripheral portions and said film being inside said bag, and a sewing thread protecting layer made of a rubber compound and covering the exposed portions of the threads, wherein the rubber compound of said layer comprises a blend polymer of ethylene propylene rubber and chloroprene rubber with the blending formula by weight of the former and the latter being from 30/70 to 70/30.
Claim 3
Dependent Claim
142 words
An air bag for vehicles comprising: a pair of sheets for air bags secured together into a bag shape, one of said sheets having a hole therein for mounting an inflator thereon; a reinforcing composite substrate sewed with a sewing thread on the inner surface of said one sheet about the periphery of said inflator-mounting hole, said substrate comprising a reinforcing base fabric and a heat-resistant film of a chloroprene rubber compound laminated on that surface of said fabric facing the interior of the bag; and a sewing thread protecting layer made of a rubber compound covering the exposed portions of said thread inside the bag, said layer being made of a rubber compound containing a blend polymer of ethylene propylene rubber and chloroprene rubber with the blending formula by weight of the former and the latter being from 10/90 to 70/30.
Claim 4
Dependent Claim
142 words
An air bag for vehicles comprising: a pair of sheets for air bags secured together into a bag shape, one of said sheets having a hole therein for mounting an inflator thereon; a reinforcing composite substrate sewed with a sewing thread on the inner surface of said one sheet about the periphery of said inflator-mounting hole, said substrate comprising a reinforcing base fabric and a heat-resistant film of a chloroprene rubber compound laminated on that surface of said fabric facing the interior of the bag; and a sewing thread protecting layer made of a rubber compound covering the exposed portions of said thread inside the bag, said layer being made of a rubber compound containing a blend polymer of ethylene propylene rubber and chloroprene rubber with the blending formula by weight of the former and the latter being from 10/90 to 70/30.
Claim 5
Dependent Claim
248 words
An air bag for vehicles comprising: a pair of sheets sewed together with a sewing thread at the peripheral portions thereof to form a bag, one of said sheets having a hole therein for mounting an inflator to said bag, said sheets being made of a base fabric for bags and a heat-resistant film of a chloroprene rubber compound laminated on one side of the said base fabric, said peripheral portions and said film being inside said bag; a first sewing thread protecting layer made of a rubber compound covering the exposed portions of said sewing thread, said first layer consisting of a rubber compound containing a blend polymer of ethylene propylene rubber and chloroprene rubber with the blending formula by weight of the former and the latter being from 30/70 to 70/30; a reinforcing composite substrate sewed with a sewing thread on the inner surface of said one sheet about the periphery of said inflator-mounting hole, said substrate comprising a reinforcing base fabric and a heat-resistant film of a chloroprene rubber compound laminated on that surface of said reinforcing base fabric facing the interior of said bag; a second sewing thread protecting layer made of a rubber compound and covering the exposed portions of said thread sewing said substrate to said one sheet, said second layer comprising a rubber compound containing a blend polymer of ethylene propylene rubber and chloroprene rubber with blending formula by weight of the former and the latter being from 10/30 to 70/30.
Claim 6
Dependent Claim
248 words
An air bag for vehicles comprising: a pair of sheets sewed together with a sewing thread at the peripheral portions thereof to form a bag, one of said sheets having a hole therein for mounting an inflator to said bag, said sheets being made of a base fabric for bags and a heat-resistant film of a chloroprene rubber compound laminated on one side of the said base fabric, said peripheral portions and said film being inside said bag; a first sewing thread protecting layer made of a rubber compound covering the exposed portions of said sewing thread, said first layer consisting of a rubber compound containing a blend polymer of ethylene propylene rubber and chloroprene rubber with the blending formula by weight of the former and the latter being from 30/70 to 70/30; a reinforcing composite substrate sewed with a sewing thread on the inner surface of said one sheet about the periphery of said inflator-mounting hole, said substrate comprising a reinforcing base fabric and a heat-resistant film of a chloroprene rubber compound laminated on that surface of said reinforcing base fabric facing the interior of said bag; a second sewing thread protecting layer made of a rubber compound and covering the exposed portions of said thread sewing said substrate to said one sheet, said second layer comprising a rubber compound containing a blend polymer of ethylene propylene rubber and chloroprene rubber with blending formula by weight of the former and the latter being from 10/30 to 70/30.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |