US5508073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uncoated fabric for manufacturing air bags
Assignee: Polyamide High Performance GmbH
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Filing: 1993-08-27
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Granted: 1996-04-16
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Expires: 2013-08-27
Abstract
Abstract Uncoated, tightly woven, synthetic filament yarn fabric for manufacturing an air bag. The fabric is manufactured from polyamide yarns having a filament linear density of less than 4 dtex. The air permeability of this fabric is <10 l/dm2xmin and its specific stiffness is <1.0x10-2.
Inventors
- 👤 Wolf R. Krummheuer
- 👤 Dieter Kaiser
- 👤 Hans A. Graefe
- 👤 Volker Siejak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:50
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/235; D; D03; D03D; D03D1/00; D03D1/02; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1331; Y10T442/00; Y10T442/30; Y10T442/3976
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
An uncoated, tightly woven, synthetic filament yarn fabric for manufacturing an air bag, wherein the yarn used to construct the fabric is a polyamide yarn having a filament linear density of less than 4 dtex and a yarn linear density of 200-600 dtex, and wherein said fabric has a specific stiffness of <1.0×10 -2 and an air permeability <10 l/dm 2 ·min, said air permeability obtained by shrinking the fabric in a wet process.
Claim 2
Dependent Claim
74 words
An uncoated, tightly woven, synthetic filament yarn fabric for manufacturing an air bag, wherein the yarn used to construct the fabric is a polyamide yarn having a filament linear density of less than 4 dtex and a yarn linear density of 200-600 dtex, and wherein said fabric has a specific stiffness of <1.0×10 -2 and an air permeability <10 l/dm 2 ·min, said air permeability obtained by shrinking the fabric in a wet process.
Claim 3
Dependent Claim
16 words
The fabric according to claim 1, wherein the fabric has an at least substantially symmetrical sett.
Claim 4
Dependent Claim
19 words
The fabric according to claim 1, wherein the fabric is wet treated in a temperature range of 60°-140° C.
Claim 5
Dependent Claim
29 words
The fabric according to claim 3, wherein the fabric is wet treated in a temperature range of 60°-140° C. in the absence of any prior or subsequent heat setting.
Claim 6
Dependent Claim
23 words
The fabric according to claim 1, wherein the polyamide yarn has a filament linear density of from about 0.5 dtex to 3.9 dtex.
Claim 7
Dependent Claim
23 words
The fabric according to claim 5, wherein the polyamide yarn has a filament linear density of from about 2.0 dtex to 3.9 dtex.
Claim 8
Dependent Claim
10 words
An air bag made of the fabric of claim 1.
Claim 9
Dependent Claim
12 words
An air bag system comprising an air bag according to claim 7.
Claim 10
Dependent Claim
10 words
An air bag made of the fabric of claim 4.
Claim 11
Dependent Claim
12 words
An air bag system comprising an air bag according to claim 9.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |