Patent EP0422806A2 successfully refreshed from Google Patents.
Patent US6183009B1 successfully refreshed from Google Patents.
US6183009B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable airbag and a method of manufacturing the same
Assignee: Individual
•
Filing: 1996-09-23
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Granted: 2001-02-06
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Expires: 2016-09-23
Abstract
Abstract The invention relates to an inflatable gas bag ( 10 ) for an occupant restraint system of a vehicle, in particular of a motor vehicle. In order to avoid the formation of creases in the inflated state, which occurs with conventional gas bags and in order to be able to employ more lightweight textile materials for the manufacture of a gas bag, the gas bag ( 10 ) consists of a multilayered textile composite material which comprises at least one layer of a textile material and one layer of a polymer material whose melting range is lower than the melting range of the textile material. The textile composite material is formed into a specified three-dimensional shape which is to develop during inflation of the gas bag ( 10 ), and the individual layers of the textile composite material are joined together in this three-dimensional shape.
Inventors
- 👤 Joseph Rychter
- 👤 Wilhelm Karl Lehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:48
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/235; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C66/00; B29C66/01; B29C66/02; B29C66/026; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/341; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/72; B29C66/721; B29C66/7214; B29C66/72141; B29C66/723; B29C66/729; B29C66/7292; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; D; D06; D06N; D06N3/00; D06N3/18; D06N3/183; B29C2793/00; B29C2793/0045; B29C66/71; B29C66/7234; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29K; B29K2313/00; B29L; B29L2009/00; B29L2022/00; B29L2022/02; B29L2022/027; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3038; B60R2021/23504; B60R2021/23523; B60R2021/23533; B60R2021/23571; B60R2021/23576; B60R2021/2358; B60R2021/2359; D06N2205/00; D06N2205/06; D06N2211/00; D06N2211/12; D06N2211/26; D06N2211/268; D06N2213/00; D06N2213/04
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
92 words
An inflatable gas bag for an occupant restraint system in a vehicle, said gas bag comprising a thermally molded multilayer textile composite comprising two layers of textile fabric material and at least one layer of fusible polymer material disposed between said two layers, wherein the melting point of said fusible polymer material is lower than the melting point of said textile fabric material and wherein said fusible polymer material has been fused to said textile fabric material in a predetermined three-dimensional shape substantially corresponding to the inflation profile of said gas bag.
Claim 2
Dependent Claim
92 words
An inflatable gas bag for an occupant restraint system in a vehicle, said gas bag comprising a thermally molded multilayer textile composite comprising two layers of textile fabric material and at least one layer of fusible polymer material disposed between said two layers, wherein the melting point of said fusible polymer material is lower than the melting point of said textile fabric material and wherein said fusible polymer material has been fused to said textile fabric material in a predetermined three-dimensional shape substantially corresponding to the inflation profile of said gas bag.
Claim 3
Dependent Claim
25 words
The invention according to claim 1 , wherein said gas bag comprises two or more molded multilayered textile composites joined together in a three-dimensional shape.
Claim 4
Dependent Claim
25 words
The invention according to claim 2 , wherein at least two of said two or more molded multilayered textile composites incorporate different textile fabric materials.
Claim 5
Dependent Claim
20 words
The invention according to claim 1 , wherein said layer of fusible polymer material comprises a plastic film or fleece.
Claim 6
Dependent Claim
25 words
The invention according to claim 4 , wherein said layer of fusible polymer material comprises a layer of plastic film disposed within a melting adhesive.
Claim 7
Dependent Claim
20 words
The invention according to claim 1 , wherein said two layers of textile fabric material are different from one another.
Claim 8
Dependent Claim
44 words
The invention according to claim 1 , wherein said textile fabric material is selected from the group consisting of knitted fabrics, warp-knitted fabrics, and woven fabrics, and further wherein said fusible polymer material has been fused to said textile fabric material between forming tools.
Claim 9
Dependent Claim
30 words
The invention according to claim 1 , wherein said textile composite is characterized by a mass per unit area of about 100 g/m 2 to about 150 g/m 2 .
Claim 10
Dependent Claim
18 words
The invention according to claim 1 , wherein said gas bag has localized regions of enhanced gas permeability.
Claim 11
Independent Claim
66 words
A method for manufacture of an inflatable gas bag for use in a vehicle restraint system comprising the concurrent steps of: (a) fusing a polymer material to at least one layer of textile fabric material between forming tools to form a multilayered textile composite; and (b) thermally forming said multilayered textile composite into a three-dimensional shape corresponding to the desired profile of said inflatable as bag.
Claim 12
Independent Claim
66 words
A method for manufacture of an inflatable gas bag for use in a vehicle restraint system comprising the concurrent steps of: (a) fusing a polymer material to at least one layer of textile fabric material between forming tools to form a multilayered textile composite; and (b) thermally forming said multilayered textile composite into a three-dimensional shape corresponding to the desired profile of said inflatable as bag.
Claim 13
Dependent Claim
25 words
The method as in claim 10 , wherein two or more forming tools are utilized to form attachable three-dimensional segments to said inflatable gas bag.
Claim 14
Dependent Claim
23 words
The method as in claim 10 , wherein said polymer material fused to said textile fabric material comprises a film or fleece material.
Claim 15
Dependent Claim
26 words
The method as in claim 10 , wherein said multilayered textile composite comprises two layers of textile fabric material between which said polymer material is disposed.
Claim 16
Dependent Claim
20 words
The method as in claim 13 , wherein said two layers of textile fabric material are different from one another.
Claim 17
Dependent Claim
32 words
The method as in claim 10 , wherein said at least one layer of textile fabric material is selected from the group consisting of knitted fabrics, warp knitted fabrics and woven fabrics.
Claim 18
Dependent Claim
34 words
The method according to claim 10 , wherein said multilayered textile composite is characterized by a mass per unit area in the range of about 100 g/m 2 to about 150 g/m 2 .
Claim 19
Dependent Claim
21 words
The method according to claim 10 , comprising the additional step of: (c) perforating localized areas of said multilayered textile composite.
Claim 20
Dependent Claim
21 words
The method according to claim 10 , wherein said polymer material and said textile fabric material have the same chemical identity.
Claim 21
Dependent Claim
13 words
An inflatable gas bag formed by the method according to claim 10 .
Claim 22
Dependent Claim
14 words
An automotive restraint system comprising an inflatable gas bag according to claim 19 .
Claim 23
Dependent Claim
16 words
An automotive restraint system comprising an inflatable gas bag as set forth in claim 1 .
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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) | 2004-02-06 | 2004-08-07 | 2005-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-06 | 2008-08-07 | 2009-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-06 | 2012-08-07 | 2013-02-06 | $7700.00 | Window Closed / Lapsed |