US5591933A
Expired / Lapsed
US
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Constructions having improved penetration resistance
Assignee: Honeywell International Inc
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Filing: 1995-06-20
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Granted: 1997-01-07
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Expires: 2015-06-20
Abstract
Abstract A rigid improved penetration resistant composite of the type comprising a plurality of fibrous layers comprising network of fibers in a polymeric matrix selected from the group consisting of thermoplastic polymers, thermosetting resins or a combination thereof, at least two of said layers secured together by a securing means, said improvement comprising a securing means which comprises fiber stitches wherein the average stitch length is greater than the average stitch path, a process for forming the composite and articles fabricated from said composite.
Inventors
- 👤 Hsin L. Li
- 👤 Young D. Kwon
- 👤 Kwok W. Lem
- 👤 Dusan C. Prevorsek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:59
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0471; F41H5/0485; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
65 words
A rigid penetration resistant composite comprising a plurality of fibrous layers comprising a network of fibers in a polymeric matrix selected from the group consisting of thermoplastic polymers, thermosetting resins or a combination thereof, at least two of said layers secured together by a stitching means which comprises slack fiber stitches wherein the average stitch length is at least 110% of the average stitch path.
Claim 2
Dependent Claim
65 words
A rigid penetration resistant composite comprising a plurality of fibrous layers comprising a network of fibers in a polymeric matrix selected from the group consisting of thermoplastic polymers, thermosetting resins or a combination thereof, at least two of said layers secured together by a stitching means which comprises slack fiber stitches wherein the average stitch length is at least 110% of the average stitch path.
Claim 3
Dependent Claim
38 words
The improved composite of claim 1 wherein the fiber of the stitches has a tenacity in the range of about 7 to about 50 grams/denier and a modulus in the range of about 40 to about 3000 grams/denier.
Claim 4
Dependent Claim
34 words
The improved composite of claim 1 wherein said fiber stitches are formed from fiber selected from the group consisting of polyethylene fiber, aramid fiber, nylon fiber, polyester fiber, glass fiber and any combination thereof.
Claim 5
Dependent Claim
12 words
The improved composite of claim 3 wherein said fiber is polyethylene fiber.
Claim 6
Dependent Claim
12 words
The improved composite of claim 3 wherein said fiber is aramid fiber.
Claim 7
Dependent Claim
19 words
The improved composite of claim 1 wherein the stitch length is up to about 300% of the stitch path.
Claim 8
Dependent Claim
20 words
The improved composite of claim 1 wherein the stitch length is up to about 150% of the average stitch path.
Claim 9
Dependent Claim
18 words
The improved composite of claim 1 wherein said composite comprises from about 10 to about 1500 fibrous layers.
Claim 10
Dependent Claim
154 words
A process for forming the composite of claim 1 which comprises the steps of: a) securing a plurality of adjacent fibrous layers each of which comprises a network of fibers dispersed in a polymeric matrix by a plurality of stitches having an average first stitch length and having an average first stitch path wherein said first stitch length is equal to or substantially equal to said first stitch path to form a composite having a 1st thickness, t 1 ; and b) compressing said first composite at a temperature and pressure to form a penetration resistant second composite having a second thickness t 2 a second stitch length and a second stitch path wherein said first thickness, t 1 , is greater than said second thickness said second stitch length is equal to or substantially equal to said first stitch length and wherein said second stitch path is less than said first stitch path.
Claim 11
Dependent Claim
20 words
An article of manufacture comprising a body which is formed totally or in part from the composite of claim 1.
Claim 12
Dependent Claim
11 words
The article of claim 10 which is a penetration resistant armor.
Claim 13
Dependent Claim
11 words
The article of claim 10 which is a blast resistant compartment.
Claim 14
Dependent Claim
19 words
The improved composite of claim 1 wherein the slack of the fiber stitches is substantially inside of the composite.
References Cited (Backward Citations)
US3988780A
Cited
US3702593A
Cited
US3562810A
Cited
US3739731A
Cited
US3841954A
Cited
US3971072A
Cited
US4331495A
Cited
DE2931110A1
Cited
US4622254A
Cited
JPS59133042A
Cited
EP0131447A2
Cited
US4550045A
Cited
US4550045B1
Cited
US4623574A
Cited
US4650710A
Cited
US4613535A
Cited
US5019435A
Cited
US4916000A
Cited
EP0299503A2
Cited
US5350615A
Cited
WO1992008607A1
Cited
US5196252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |