US3997697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric with boron filaments
Assignee: Dassault Aviation SA
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Filing: 1975-03-27
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Granted: 1976-12-14
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Expires: 1995-03-27
Abstract
Abstract A fabric comprising warp and woof (weft) has dense and strong boron fibers and boron-compound fibers constituting the weft and utilizes an open warp having a supportive function for the boron weft thereby obtaining high strength in the weft direction.
Inventors
- 👤 Jean Brochier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:02
CPC Classifications
D; D03; D03D; D03D15/00; D03D15/20; D03D15/283; D03D15/242; D03D15/25; D03D15/50; D03D15/573; D10; D10B; D10B2101/00; D10B2101/02; D10B2101/20; D10B2201/00; D10B2201/01; D10B2211/00; D10B2211/01; D10B2331/00; D10B2331/02; D10B2331/04; D10B2401/00; D10B2401/06; D10B2401/063; D10B2505/00; D10B2505/02; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2916; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/322; Y10T442/3228; Y10T442/3236; Y10T442/3301; Y10T442/3309
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
A unidirectionally tensionable and reinforced fabric having a woven body formed by a low-density open warp consisting of natural or synthetic threads and having a density of 2 to 20 threads per cm, the threads of said warp being substantially parallel; and a high density planar weft of spaced-apart single boron threads interwoven with and substantially orthogonal to the warp, said boron threads being held together exclusively in a single layer in side-by-side relation, said weft having a density of at least 90 threads per cm.
Claim 2
Dependent Claim
86 words
A unidirectionally tensionable and reinforced fabric having a woven body formed by a low-density open warp consisting of natural or synthetic threads and having a density of 2 to 20 threads per cm, the threads of said warp being substantially parallel; and a high density planar weft of spaced-apart single boron threads interwoven with and substantially orthogonal to the warp, said boron threads being held together exclusively in a single layer in side-by-side relation, said weft having a density of at least 90 threads per cm.
Claim 3
Dependent Claim
23 words
The fabric defined in claim 1, further comprising at least one layer of synthetic-resin laminated to said body to form a stratified material.
Claim 4
Dependent Claim
17 words
The fabric defined in claim 1 wherein said body has a width of at least 100 cm.
Claim 5
Dependent Claim
17 words
The fabric defined in claim 3 wherein said weft has a density of 94 threads per cm.
Claim 6
Dependent Claim
13 words
The fabric defined in claim 1 further comprising a synthetic-resin impregnating said body.
Claim 7
Dependent Claim
14 words
The fabric defined in claim 1 wherein said warp is composed of synthetic-resin threads.
Claim 8
Dependent Claim
15 words
The fabric defined in claim 1 constituting part of and incorporated in an aeronautical structure.
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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |