US5141787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air bag
Assignee: NSK Ltd
•
Filing: 1991-05-03
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Granted: 1992-08-25
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Expires: 2011-05-03
Abstract
Abstract An air bag has a pair of circular fabrics overlapping one upon the other with their marginal portions being stitched by crossing a sewing thread on the side of their edges to form a seam so that the seam is showing. The marginal end portions can be neatly enwrapped by the seam, not only providing the air bag with an unimpaired appearance but also making it compact when folded.
Inventors
- 👤 Kazuo Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:21
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/235; B60R2021/23571; B60R2021/23576; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1341; Y10T428/1345; Y10T428/1352; Y10T428/1362; Y10T428/21; Y10T428/24; Y10T428/24033; Y10T428/24777
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
52 words
An air bag, comprising: a pair of circular fabrics overlapping one another to form overlapping marginal portions having peripheral edge portions, said overlapping marginal portions being stitched by crossing a sewing thread in a radical direction of said fabrics over said peripheral edge portions to form a seam, said seam being exposed.
Claim 2
Dependent Claim
52 words
An air bag, comprising: a pair of circular fabrics overlapping one another to form overlapping marginal portions having peripheral edge portions, said overlapping marginal portions being stitched by crossing a sewing thread in a radical direction of said fabrics over said peripheral edge portions to form a seam, said seam being exposed.
Claim 3
Dependent Claim
57 words
An air bag according to claim 1, wherein a first piece of said sewing thread is arranged on said first fabric and a second piece of said sewing thread is arranged on said second fabric, and said first and second pieces of said sewing thread are interlaced at said peripheral edge portions where said marginal portions meet.
Claim 4
Dependent Claim
32 words
An air bag according to claim 2, further comprising: a catching thread for holding said first and second pieces of said sewing thread at a position inward from said peripheral edge portions.
Claim 5
Dependent Claim
43 words
An air bag according to claim 1, wherein said sewing thread comprises a single piece of sewing thread for stitching said peripheral edge portions, said single piece of said sewing thread being alternately spread over both said first fabric and said second fabric.
Claim 6
Dependent Claim
30 words
An air bag according to claim 4, further comprising: a catching thread for holding said single piece of said sewing thread at a position inward from said peripheral edge portions.
Claim 7
Dependent Claim
60 words
An air bag, comprising: a pair of circular fabrics overlapping one another to form overlapping marginal portions having peripheral edge portions, said overlapping marginal portions being folded inwardly, said inwardly folded marginal portions being stitched by crossing a sewing thread in a radical direction of said fabrics over said peripheral edge portions to form a seam, said seam being exposed.
Claim 8
Dependent Claim
60 words
An air bag, comprising: a pair of circular fabrics overlapping one another to form overlapping marginal portions having peripheral edge portions, said overlapping marginal portions being folded inwardly, said inwardly folded marginal portions being stitched by crossing a sewing thread in a radical direction of said fabrics over said peripheral edge portions to form a seam, said seam being exposed.
Claim 9
Dependent Claim
52 words
An air bag according to claim 6, wherein a first piece of said sewing thread is arranged on said first fabric and a second piece of said sewing thread is arranged on said second fabric, and said first and second pieces of said sewing thread are interlaced at the peripheral edge portions.
Claim 10
Dependent Claim
32 words
An air bag according to claim 7, further comprising: a catching thread for holding said first and second pieces of said sewing thread at a position inward from said peripheral edge portions.
Claim 11
Dependent Claim
43 words
An air bag according to claim 6, wherein said sewing thread comprises a single piece of sewing thread for stitching said peripheral edge portions, said single pieces of said sewing thread being alternately spread over both said first fabric and said second fabric.
Claim 12
Dependent Claim
30 words
An air bag according to claim 9, further comprising: a catching thread for holding said single piece of said sewing thread at a position inward from said peripheral edge portions.
Claim 13
Independent Claim
66 words
A method of sewing an air bag, said method comprising the steps of: overlapping a pair of circular fabrics; and stitching overlapping marginal portions having peripheral edge portions of said pair of fabrics by crossing a sewing thread in a radical direction of said fabrics over said peripheral edge portions to form a seam while said pair of circular fabrics is cut, said seam being exposed.
Claim 14
Independent Claim
66 words
A method of sewing an air bag, said method comprising the steps of: overlapping a pair of circular fabrics; and stitching overlapping marginal portions having peripheral edge portions of said pair of fabrics by crossing a sewing thread in a radical direction of said fabrics over said peripheral edge portions to form a seam while said pair of circular fabrics is cut, said seam being exposed.
Claim 15
Dependent Claim
26 words
An air bag according to claim 3, wherein said circular fabrics comprise an elastic material, each of said circular fabrics having a surface coated with rubber.
Claim 16
Dependent Claim
26 words
An air bag according to claim 3, wherein said circular fabrics comprise an elastic material, each of said circular fabrics having a surface coated with resin.
Claim 17
Dependent Claim
18 words
An air bag according to claim 3, wherein one of said circular fabrics has an opening formed therein.
Claim 18
Dependent Claim
26 words
An air bag according to claim 8, wherein said circular fabrics comprise an elastic material, each of said circular fabrics having a surface coated with rubber.
Claim 19
Dependent Claim
26 words
An air bag according to claim 8, wherein said circular fabrics comprise an elastic material, each of said circular fabrics having a surface coated with resin.
Claim 20
Dependent Claim
18 words
An air bag according to claim 8, wherein one of said circular fabrics has an opening formed therein.
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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) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |