US3756288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Webbing for use in seat belts
Assignee: Hoshino Kogyo KK
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Filing: 1972-03-21
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Granted: 1973-09-04
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Expires: 1992-03-21
Abstract
Abstract Webbing for use in seat belts and the like having a multiplestep give. The webbing has a first warp of yarn of medium strength high tensility and has a second and third warp of yarn of low strength low tensility, medium strength medium tensility, on high strength low tensility as compared with the strength and tensility of the first warp. The weft is yarn of medium strength and high tensility. All of the warp yarns are sufficiently strong so they are not broken until the initial load applied to the webbing reaches a predetermined value between 200 - 1,000 kg, and the warp yarns also have sufficient strength not to elongate in proportion to an increase in load. Above the predetermined load value, the second and third warp yarns are gradually and repeatedly broken while the shape of the web is maintained by the first warp yarn and the weft until the tensility reaches a predetermined value after the initial load reaches such a value, after which the webbing elongates without an increase in the load applied thereto. The webbing does not return to its initial state with a violent recoil after removal of the load, due to the action of the first and second warps, thereby giving the webbing a multiple-step give with a load-deflection curve substantially in the form of a parallelogram.
Inventors
- 👤 K Seo
- 👤 F Masuda
- 👤 Y Hayashi
- 👤 T Hoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:26
CPC Classifications
D; D03; D03D; D03D11/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
219 words
Webbing having a multiple-step give for restraining the human body comprising first warp consisting of yarn of medium strength high tensility; at least second and third warp, said second and third warp being selected from yarn of loW strength low tensility, medium strength medium tensility, high strength low tensility respectively as compared with the strength and tensility of said first warp, said first warp constituting a first texture together with weft consisting of yarn of medium strength and high tensility, said second and third warp constituting the second texture together with said weft, all said warp are adapted not to be broken until the initial load applied to the webbing reaches a predetermined value between 200 - 1,100 kg, said warp also having comparatively sufficient strength not to elongate in proportion to an increase in load, second and third warp being gradually and repeatedly broken sustained by the first texture until the tensility attains the predetermined value after said initial load reached said value thereby enabling the webbing to elongate without increasing the load applied thereto, said webbing being prevented from being restored with violent recoil after removal of the load by the correlative action of the first and second textures, thereby giving the webbing the multiple-step give with a load-deflection curve substantially in the form of a parallelogram.
Claim 2
Dependent Claim
219 words
Webbing having a multiple-step give for restraining the human body comprising first warp consisting of yarn of medium strength high tensility; at least second and third warp, said second and third warp being selected from yarn of loW strength low tensility, medium strength medium tensility, high strength low tensility respectively as compared with the strength and tensility of said first warp, said first warp constituting a first texture together with weft consisting of yarn of medium strength and high tensility, said second and third warp constituting the second texture together with said weft, all said warp are adapted not to be broken until the initial load applied to the webbing reaches a predetermined value between 200 - 1,100 kg, said warp also having comparatively sufficient strength not to elongate in proportion to an increase in load, second and third warp being gradually and repeatedly broken sustained by the first texture until the tensility attains the predetermined value after said initial load reached said value thereby enabling the webbing to elongate without increasing the load applied thereto, said webbing being prevented from being restored with violent recoil after removal of the load by the correlative action of the first and second textures, thereby giving the webbing the multiple-step give with a load-deflection curve substantially in the form of a parallelogram.
Claim 3
Dependent Claim
49 words
The webbing as defined in claim 1 wherein the predetermined value of the initial load is set between 200 - 800 kg, the warp having great tensility as compared with an increase in load until the tensility attains 20 - 30 percent after the load reached said predetermined value.
Claim 4
Dependent Claim
49 words
The webbing as defined in claim 1 wherein the predetermined value of the initial load is set between 500 - 1,100 kg, the warp having great tensility as compared with an increase in load until the tensility attains 10 - 20 percent after the load reached said predetermined value.
Claim 5
Dependent Claim
20 words
The webbing as defined in claim 1 wherein the first texture is twill web, the second texture being plain web.
Claim 6
Dependent Claim
17 words
The webbing as defined in claim 1 wherein the first and second textures are both plain webs.
Claim 7
Dependent Claim
17 words
The webbing as defined in claim 1 wherein the first and second textures are both twill webs.
Claim 8
Dependent Claim
76 words
The webbing as defined in claim 1 characterized in that the volume of the second and third warp and the tension of the first warp are adapted to be comparatively great, thereby causing a peak load higher than the predetermined value to act transitionally on the webbing prior to the initial load reaching said predetermined value, the second and third warp being subsequently broken gradually and repeatedly by a load substantially identical with said predetermined value.
Claim 9
Dependent Claim
20 words
The webbing as defined in claim 7 wherein the first texture is twill web, the second texture being plain web.
Claim 10
Dependent Claim
17 words
The webbing as defined in claim 7 wherein the first and second textures are both plain webs.
Claim 11
Dependent Claim
17 words
The webbing as defined in claim 7 wherein the first and second textures are both twill webs.
Claim 12
Dependent Claim
49 words
The webbing as defined in claim 7 wherein the predetermined value of the initial load is set between 200 - 800 kg, the warp having great tensility as compared with an increase in load until the tensility attains 20 - 30 percent after the load reached said predetermined value.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |