US5178408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas bag for airbag systems
Assignee: Kolbenschmidt AG
•
Filing: 1991-04-22
•
Granted: 1993-01-12
•
Expires: 2011-04-22
Abstract
Abstract In an automotive vehicle provided with an inflatable gas bag for protection of an occupant in the event of collision, the improvement wherein the bag is made of a plain-weave woven fabric of synthetic threads and having a top and a bottom, the woven fabric having a sett of 16 to 23 threads per cm, its threads having a denier of at most 470 dtex, low-shrinkage threads being in the bottom of the gas bag and extensive thread being in the top of the gas bag.
Inventors
- 👤 Frank Barrenscheen
- 👤 Martin Kreuzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:06
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/235; D; D03; D03D; D03D1/00; D03D1/02; D03D15/00; D03D15/20; D03D15/283; D03D15/50; D03D15/56; D10; D10B; D10B2331/00; D10B2331/02; D10B2401/00; D10B2401/06; D10B2401/061; D10B2505/00; D10B2505/12; D10B2505/124
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
133 words
In combination, an inflatable gas bag for use as protection for a passenger in a vehicle, and an explodable charge to inflate said gas bag, said explodable charge upon explosion producing gas and solid particles of predetermined sizes, said gas bag being made of a plain-weave woven fabric of synthetic threads and having a top and a bottom, the woven fabric having a sett of 16 to 23 threads per cm, its threads having a denier of at most 470 dtex, low-elongation threads being in the bottom of the gas bag and high elongation threads being in the top of the gas bag, inflation of said gas bag resulting in expansion of said bag with formation of interstices of sufficient size to permit escape of said gas but not of said solid particles.
Claim 2
Dependent Claim
133 words
In combination, an inflatable gas bag for use as protection for a passenger in a vehicle, and an explodable charge to inflate said gas bag, said explodable charge upon explosion producing gas and solid particles of predetermined sizes, said gas bag being made of a plain-weave woven fabric of synthetic threads and having a top and a bottom, the woven fabric having a sett of 16 to 23 threads per cm, its threads having a denier of at most 470 dtex, low-elongation threads being in the bottom of the gas bag and high elongation threads being in the top of the gas bag, inflation of said gas bag resulting in expansion of said bag with formation of interstices of sufficient size to permit escape of said gas but not of said solid particles.
Claim 3
Dependent Claim
27 words
A combination according to claim 1, wherein the woven fabric of the bottom of the gas bag has a sett of 16 to 18.5 threads per cm.
Claim 4
Dependent Claim
32 words
A combination according to claim 1, wherein the woven fabric of the bottom of the gas bag has a sett of 17.5 warp threads per cm and of 17.1 picks per cm.
Claim 5
Dependent Claim
27 words
A combination according to claim 1, wherein the woven fabric of the top of the gas bag has a sett of 21 to 23.5 threads per cm.
Claim 6
Dependent Claim
32 words
A combination according to claim 1, wherein the woven fabric of the top of the gas bag has a sett of 22.8 warp threads per cm and of 20.8 picks per cm.
Claim 7
Dependent Claim
23 words
A combination according to claim 1, wherein the threads of the top of the gas bag have an elongation of 20 to 30%.
Claim 8
Dependent Claim
34 words
A combination according to claim 1, wherein the woven fabric of the bottom of the gas bag extends at an angle of 45° to the woven fabric of the top of the gas bag.
Claim 9
Dependent Claim
12 words
A combination according to claim 1, wherein the threads are of polyamide.
Claim 10
Dependent Claim
141 words
In an automotive vehicle provided in combination with an inflatable gas bag for protection of an occupant in the event of collision and an explodable charge to inflate said gas bag, the improvement wherein explodable charge upon explosion producing gas and solid particles of predetermined sizes, said gas bag being made of a plain-weave woven fabric of synthetic threads and having a top and a bottom, the woven fabric having a sett of 16 to 23 threads per cm, its threads having a denier of at most 470 dtex, low-elongation threads being in the bottom of the gas bag and high elongation threads being in the top of the gas bag, inflation of said gas bag resulting in expansion of said bag with formation of interstices of sufficient size to permit escape of said gas but not of said solid particles.
Claim 11
Dependent Claim
141 words
In an automotive vehicle provided in combination with an inflatable gas bag for protection of an occupant in the event of collision and an explodable charge to inflate said gas bag, the improvement wherein explodable charge upon explosion producing gas and solid particles of predetermined sizes, said gas bag being made of a plain-weave woven fabric of synthetic threads and having a top and a bottom, the woven fabric having a sett of 16 to 23 threads per cm, its threads having a denier of at most 470 dtex, low-elongation threads being in the bottom of the gas bag and high elongation threads being in the top of the gas bag, inflation of said gas bag resulting in expansion of said bag with formation of interstices of sufficient size to permit escape of said gas but not of said solid particles.
References Cited (Backward Citations)
US3888504A
Cited
DE2133704A1
Cited
US3892425A
Cited
CA974745A
Cited
US3937488A
Cited
US3842583A
Cited
US4559975A
Cited
JPS6471361A
Cited
EP0314867A2
Cited
US4921735A
Cited
JPH02220944A
Cited
JPH02279441A
Cited
US5071161A
Cited
US5011183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-01-12 | 1996-07-13 | 1997-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-12 | 2000-07-13 | 2001-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-12 | 2004-07-13 | 2005-01-12 | $7700.00 | Window Closed / Lapsed |