US4750529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Webbing for safety belt
Assignee: NSK Ltd
•
Filing: 1987-02-25
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Granted: 1988-06-14
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Expires: 2007-02-25
Abstract
Abstract A webbing for a safety belt includes a main part and selvedges extending along both sides of the main part. The denier size of warp threads in the selvedges is smaller than that of warp threads in the main part. The denier size of weft threads in the main part is at least equal to that of the warp threads in the selvedges. The heat shrinkage percentage of the weft threads in the main part is greater than at least the heat shrinkage percentage of the warp threads in the main part.
Inventors
- 👤 Masao Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:10
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/40; D03D47/42; D03D47/44; D03C; D03C15/00; D03D15/00; D03D15/50; D03D15/567; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/24785
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
In a webbing for a safety belt, said webbing comprising a main part and selvedges extending along both sides of the main part, the improvement wherein the denier size of warp threads in the selvedges is smaller than that of warp threads in the main part, the denier size of weft threads in the main part is at least equal to that of the warp threads in the selvedges, and the heat shrinkage percentage of the weft threads in the main part is greater than at least the heat shrinkage percentage of the warp threads in the main part.
Claim 2
Dependent Claim
99 words
In a webbing for a safety belt, said webbing comprising a main part and selvedges extending along both sides of the main part, the improvement wherein the denier size of warp threads in the selvedges is smaller than that of warp threads in the main part, the denier size of weft threads in the main part is at least equal to that of the warp threads in the selvedges, and the heat shrinkage percentage of the weft threads in the main part is greater than at least the heat shrinkage percentage of the warp threads in the main part.
Claim 3
Dependent Claim
59 words
The webbing as claimed in claim 1, wherein the elongation at break of the warp threads in the selvedges is at least equal to that of the warp threads in the main part and the heat shrinkage percentage of the warp threads in the selvedges is at most equal to that of the warp threads in the main part.
Claim 4
Dependent Claim
33 words
The webbing as claimed in claim 1, wherein the filaments forming the warp threads and weft threads in the selvedges are synthetic filaments having a denier size of from 8 to 14 denier.
Claim 5
Dependent Claim
35 words
The webbing as claimed in claim 1, wherein at least two outermost warp threads in the main part adjacent to each of the selvedges extend adjacent to each other and form a 2-up/2-down plain weave.
Claim 6
Dependent Claim
62 words
The webbing as claimed in claim 1, wherein in each of the selvedges, warp threads extending adjacent to the corresponding edge of the main part are formed in at least two units of four in a 2-up/2-down plain weave and warp threads extending adjacent to the plain weaves are formed in at least two units of two in a 2-up/2-down plain weave.
Claim 7
Dependent Claim
32 words
The webbing as claimed in claim 1, wherein one of the selvedges is formed by end loops of the weft threads and a catch thread as a fraying stopper for the loops.
Claim 8
Dependent Claim
47 words
The webbing as claimed in claim 1, wherein one of the selvedges is formed by end loops of the weft threads, a woven selvedge thread extending through the end loops and forming additional loops, and a catch thread as a fraying stopper for the woven selvedge thread.
References Cited (Backward Citations)
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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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |