Patent US5254383A successfully refreshed from Google Patents.
US5254383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composites having improved penetration resistance and articles fabricated from same
Assignee: Honeywell International Inc
•
Filing: 1992-09-14
•
Granted: 1993-10-19
•
Expires: 2012-09-14
Abstract
Abstract An improved flexible composite of manufacture especially suitable for use as a ballistic resistant body armor, said improved penetration resistant composite of the type comprising at least one penetration resistant layer comprising a flexible substrate having a plurality of penetration resistant elements on a surface thereof, said elements comprising a planar body having one or more fibrous layers on a surface of said body, each of said layers comprising a fiber network, said fiber network such that movement of said fibers in the direction of the edges of said body is restrained.
Inventors
- 👤 Gary A. Harpell
- 👤 Dusan C. Prevorsek
- 👤 Max W. Gerlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:26
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0492; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/911; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/24132
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
94 words
A penetration resistant composite comprising a planar body having one or more fibrous layers on a surface of said body, each of said layers comprising a fiber network, said fiber network such that movement of said fibers in the direction of the edges of said body is restrained such that when said composite is tested with a high L/D threat in accordance with The State of California Specification 8470-8BS-001, Paragraph 3.3, dated Aug. 1988, the movement of the point of said threat along the surface of said composite is restrained by said fiber network.
Claim 2
Dependent Claim
94 words
A penetration resistant composite comprising a planar body having one or more fibrous layers on a surface of said body, each of said layers comprising a fiber network, said fiber network such that movement of said fibers in the direction of the edges of said body is restrained such that when said composite is tested with a high L/D threat in accordance with The State of California Specification 8470-8BS-001, Paragraph 3.3, dated Aug. 1988, the movement of the point of said threat along the surface of said composite is restrained by said fiber network.
Claim 3
Dependent Claim
44 words
A composite as recited in claim 1 wherein the weight percent of said planar body is from about 10 to about 95 and the weight percent of said fibrous layer is from about 90 to about 5 based on the total of said composite.
Claim 4
Dependent Claim
37 words
A composite as recited in claim 2 wherein the weight percent of said planar body is from about 30 to about 90 and the weight percent of said fibrous layer is from about 70 to about 10.
Claim 5
Dependent Claim
36 words
A composite as recited in claim 3 wherein the weight percent of said planar body is from about 60 about 90 and the weight percent of said fibrous layer is from about 40 to about 10.
Claim 6
Dependent Claim
37 words
A composite as recited in claim 4 wherein the weight percent of said planar body is from about 70 to about 90 and the weight percent of said fibrous layer is from about 30 to about 10.
Claim 7
Dependent Claim
43 words
A composite as recited in claim 5 wherein said body is a polygonal body, and said fibrous layer comprises a fibrous girdle encircling said body such that substantially all of each surface and edge of said body is covered by said fibrous girdle.
Claim 8
Dependent Claim
46 words
A composite as recited in claim 6 wherein said fibrous layer comprises a network of high strength fibers having a tensile strength of at least about 5 grams/denier, a tensile modulus of at least about 30 grams/denier and an energy-to-break of at least about 15 joules/gram.
Claim 9
Dependent Claim
42 words
A composite as recited in claim 7 wherein said tenacity is equal to or greater than about 10 g/d, said modulus is equal to or greater than about 500 g/d, and said energy-to-break is equal to or greater than about 20 j/g.
Claim 10
Dependent Claim
42 words
A composite as recited in claim 8 wherein said tenacity is equal to or greater than about 20 g/d, said modulus is equal to or greater than about 1000 g/d, and said energy-to-break is equal to or greater than about 30 j/g.
Claim 11
Dependent Claim
26 words
A composite as recited in claim 7 wherein said fibers are polyethylene fibers, aramid fibers, metal fibers, polyester fibers, nylon fibers, glass fibers or mixtures thereof.
Claim 12
Dependent Claim
13 words
A composite as recited in claim 10 wherein said fibers are polyethylene fibers.
Claim 13
Dependent Claim
13 words
A composite as recited in claim 10 wherein said fibers are aramid fibers.
Claim 14
Dependent Claim
27 words
A composite as recited in claim 10 wherein said fibers are a mixture of at least two of polyethylene fibers, nylon fibers, aramid fibers and glass fibers.
Claim 15
Dependent Claim
37 words
A composite as recited in claim 7 wherein said fibrous girdle if formed from at least one sheet-like uniaxial fibrous layer in which said fibers are arranged substantially parallel to one another along a common fiber direction.
Claim 16
Dependent Claim
71 words
A composite as recited in claim 14 wherein said fibrous layer comprises more than one uniaxial fibrous layer with adjacent arrays aligned at an angle with respect to the longitudinal axis of the parallel fibers contained in said adjacent uniaxial layer, and wherein each edge has at least one layer of restrained fibers wherein all or a portion of said restrained fibers are parallel to or substantially parallel to said edge.
Claim 17
Dependent Claim
38 words
A composite as recited in claim 15 wherein at least one of said uniaxial layers is wrapped about all or substantially all of the planar surfaces and edges of said body in a continuous or substantially continuous fashion.
Claim 18
Dependent Claim
17 words
A composite as recited in claim 15 wherein said uniaxial layers are dispersed in a polymeric matrix.
Claim 19
Dependent Claim
18 words
A composite as recited in claim 15 wherein said angle is from about 45° to about 90° .
Claim 20
Dependent Claim
14 words
A composite as recited in claim 18 wherein said angle is about 90° .
Claim 21
Dependent Claim
51 words
A composite as recited in claim 7 wherein said substrate layer comprises a non-woven fabric, a woven fabric or a combination thereof wherein each edge has at least one layer of restrained fibers wherein all or a portion of said restrained fibers are parallel to or substantially parallel to said edge.
Claim 22
Dependent Claim
18 words
A article of manufacture comprising a body formed totally or in part from the composite of claim 1.
Claim 23
Dependent Claim
140 words
An improved penetration resistant composite of the type comprising at least one substrate layer having one or more planar elements affixed to a surface thereof, the improvement comprising at least one penetration resistant layer comprising a flexible substrate having a plurality of penetration resistant elements on a surface thereof, said elements comprising a planar body having one or more fibrous layers on a surface of said body, each of said layers comprising a fiber network, said fiber network such that movement of said fibers in the direction of the edges of said body is restrained such that when said composite is tested with a high L/D threat in accordance with The State of California Specification 8470-8BS-001,Paragraph 3.3, dated Aug. 1988, the movement of the point of said threat along the surface of said element is restrained by said fiber network.
Claim 24
Dependent Claim
140 words
An improved penetration resistant composite of the type comprising at least one substrate layer having one or more planar elements affixed to a surface thereof, the improvement comprising at least one penetration resistant layer comprising a flexible substrate having a plurality of penetration resistant elements on a surface thereof, said elements comprising a planar body having one or more fibrous layers on a surface of said body, each of said layers comprising a fiber network, said fiber network such that movement of said fibers in the direction of the edges of said body is restrained such that when said composite is tested with a high L/D threat in accordance with The State of California Specification 8470-8BS-001,Paragraph 3.3, dated Aug. 1988, the movement of the point of said threat along the surface of said element is restrained by said fiber network.
Claim 25
Dependent Claim
18 words
A article of manufacture comprising a body formed totally or in part from the composite of claim 21.
Claim 26
Dependent Claim
10 words
A article of claim 23 which is a body armor.
References Cited (Backward Citations)
US4650810A
Cited
US4413110A
Cited
US4403012A
Cited
US4457985A
Cited
US4501856A
Cited
US4543286A
Cited
US4623574A
Cited
US4748064A
Cited
US4613535A
Cited
US4737402A
Cited
US4737401A
Cited
US4916000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-10-18 | 1997-04-19 | 1997-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-18 | 2001-04-19 | 2001-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-18 | 2005-04-19 | 2005-10-19 | $7700.00 | Window Closed / Lapsed |