Patent US3872895A successfully refreshed from Google Patents.
US3872895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Woven fabric for safety belts of high energy-absorbency
Assignee: Takata Kogyo Co Ltd
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Filing: 1972-11-06
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Granted: 1975-03-25
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Expires: 1992-11-06
Abstract
Abstract A safety belt web is a woven fabric band including nylon warp threads and warp threads of lesser elongation than the nylon threads, the nylon warp threads being disposed outside the low elongation warp threads so that the latter is unexposed and the low elongation threads are under tension in the relaxed web and advantageously linear. The elongation properties and amount of low elongation warp threads are such that their maximum elongation does not exceed 20 percent, at a total web tension of about 500 kilograms. In one form of the belt web, top and bottom sets of warps and a filler which alternately interweaves successive upper and lower warp groups form top and bottom woven webs, the longitudinal lines of the filler transfer points dividing the space between the upper and lower webs into longitudinal passageways along which extend core threads of less elongation and less weave crimp than the warps. The core threads may be formed of similar filaments or of filaments having different elongation to load characteristics and are preferably linear.
Inventors
- 👤 Takezo Takada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:04
CPC Classifications
D; D03; D03D; D03D11/00; D03D1/00; D03D1/0005; D03D15/00; D03D15/20; D03D15/283; D03D15/50; D10; D10B; D10B2201/00; D10B2201/01; D10B2201/02; D10B2321/00; D10B2321/06; D10B2331/00; D10B2331/02; D10B2331/04; D10B2505/00; D10B2505/12; D10B2505/122
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
109 words
A woven energy absorbing safety belt web comprising first and second groups of warp threads of relatively low and relatively high elongation respectively, and a filler thread interwoven with said warp threads, said second group warp threads having a weave crimp exceeding that of said first group warp threads and said first group warp threads comprising a plurality of core threads having elongations different from each other and lower than that of said second group warp threads, and said first group warp threads having a non-recoverable extensibility under a substantially constant predetermined load for a predetermined elongation before the rupture of said first group warp threads of maximum elongation.
Claim 2
Dependent Claim
109 words
A woven energy absorbing safety belt web comprising first and second groups of warp threads of relatively low and relatively high elongation respectively, and a filler thread interwoven with said warp threads, said second group warp threads having a weave crimp exceeding that of said first group warp threads and said first group warp threads comprising a plurality of core threads having elongations different from each other and lower than that of said second group warp threads, and said first group warp threads having a non-recoverable extensibility under a substantially constant predetermined load for a predetermined elongation before the rupture of said first group warp threads of maximum elongation.
Claim 3
Dependent Claim
34 words
The safety belt web of claim 1 wherein said second relatively high elongation warp threads are disposed outwardly of said first low elongation warp threads relative to the opposite outer faces of said web.
Claim 4
Dependent Claim
30 words
The safety belt web of claim 1 wherein said first warp threads are under tension relative to said second warp threads when said web is in an overall relaxed condition.
Claim 5
Dependent Claim
49 words
The safety belt web of claim 1 wherein said first warp threads of maximum elongation extends substantially linearly between said filler threads disposed along opposite sides of said first warp threads and said second warp threads interweave said filler threads and are disposed along opposite faces of said web.
Claim 6
Dependent Claim
30 words
The safety belt web of claim 1 wherein said first threads have a rupture elongation of 20 percent and at a total load on said web of about 500 kilograms.
Claim 7
Dependent Claim
13 words
The safety belt web of claim 1 wherein said second threads comprise nylon.
Claim 8
Dependent Claim
29 words
The safety belt web of claim 6 wherein said first threads are selected from the class consisting of polyester fibers, polyvinyl alcohol fibers, cotton, metallic threads and combinations thereof.
Claim 9
Dependent Claim
21 words
The safety belt of claim 1 wherein said first threads extend substantially linearly and said second threads are of undulate configuration.
Claim 10
Dependent Claim
136 words
A safety belt web comprising upper and lower longitudinally extending transversely spaced warps, a filler interwoven alternately with successive upper and lower groups of said warps and transferring at spaced intervals between said upper and lower warps to form upper and lower weaves which delineated in said web a plurality of longitudinally extending passageways transversely separated by said filler along the longitudinal lines of the transfer points thereof, and core threads extending longitudinally in said passageways, said core threads having less elongation versus load and less weave crimp than said warps and at least some of said core threads having elongations different from other of said core threads, and said core threads having a non-recoverable extensibility under a substantially constant predetermined load for a predetermined elongation before the rupture of said core threads of maximum elongation.
Claim 11
Dependent Claim
136 words
A safety belt web comprising upper and lower longitudinally extending transversely spaced warps, a filler interwoven alternately with successive upper and lower groups of said warps and transferring at spaced intervals between said upper and lower warps to form upper and lower weaves which delineated in said web a plurality of longitudinally extending passageways transversely separated by said filler along the longitudinal lines of the transfer points thereof, and core threads extending longitudinally in said passageways, said core threads having less elongation versus load and less weave crimp than said warps and at least some of said core threads having elongations different from other of said core threads, and said core threads having a non-recoverable extensibility under a substantially constant predetermined load for a predetermined elongation before the rupture of said core threads of maximum elongation.
Claim 12
Dependent Claim
19 words
The web of claim 9 wherein a plurality of said core threads is disposed in each of said passageways.
Claim 13
Dependent Claim
12 words
The web of claim 9 wherein said core threads are substantially linear.
Claim 14
Dependent Claim
26 words
The web of claim 9 wherein said core threads have a rupture elongation of about 20 percent at a total web loading of about 500 kilograms.
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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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |