US4574105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penetration resistant textile panels with plies of nylon and plies of Kevlar
Assignee: Albany International Corp
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Filing: 1984-02-15
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Granted: 1986-03-04
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Expires: 2004-02-15
Abstract
Abstract The disclosure is of a penetration resistant panel which comprises plied layers of interwoven textile yarns of poly(p-phenylene terephthalamide) backed with plied layers of woven or non-woven fibers of Nylon 6,6. The panels of the invention are useful as ballistic-protective armor and are inherently lower in cost than similarly-effective panels comprised solely of poly(p-phenylene terephthalamide).
Inventors
- 👤 James G. Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:58
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/08; B32B5/024; B32B5/22; B32B5/24; B32B5/26; F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0471; F41H5/0485; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2307/00; B32B2307/50; B32B2307/54; B32B2571/00; B32B2571/02; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31728; Y10T428/31732; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3537
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A penetration resistant textile panel, which comprises; a plurality of plies of woven poly(p-phenylene terephthalamide) yarns forming the face of said panel; and a plurality of plies selected from the group consisting of needled, non-woven staple fibers of a nylon polyamide and woven yarns of a nylon polyamide, forming the back side of the panel; said face plies comprising one-half to three-quarters by weight of said panel and said back side plies comprising one-quarter to one-half by weight of said panel.
Claim 2
Dependent Claim
81 words
A penetration resistant textile panel, which comprises; a plurality of plies of woven poly(p-phenylene terephthalamide) yarns forming the face of said panel; and a plurality of plies selected from the group consisting of needled, non-woven staple fibers of a nylon polyamide and woven yarns of a nylon polyamide, forming the back side of the panel; said face plies comprising one-half to three-quarters by weight of said panel and said back side plies comprising one-quarter to one-half by weight of said panel.
Claim 3
Dependent Claim
13 words
The panel of claim 1 wherein the total number of plies is 12.
Claim 4
Dependent Claim
26 words
The panel of claim 2 wherein there are from 6 to 8 plies of poly(p-phenylene terephthalamide) fabric and from 4 to 6 plies of polyamide fabric.
Claim 5
Dependent Claim
14 words
The panel of claim 1 wherein the polyamide plies are woven of polyamide yarns.
Claim 6
Dependent Claim
13 words
The panel of claim 1 wherein the polyamide plies are non-woven staple fibers.
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) | 1989-03-03 | 1989-09-02 | 1990-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-03 | 1993-09-02 | 1994-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-03 | 1997-09-02 | 1998-03-04 | $7700.00 | Window Closed / Lapsed |