US3722355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight armor material
Assignee: Aerojet Rocketdyne Inc
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Filing: 1965-08-03
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Granted: 1973-03-27
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Expires: 1985-08-03
Abstract
Abstract This disclosure concerns a lightweight armor material which includes a woven fabric of glass and nylon fibers, wherein the individual glass fibers are interlaced with individual nylon fibers so as to provide an interwoven relationship between the glass fibers and the nylon fibers. A woven fabric of this character is especially suitable for use in body armor and may be employed in multiple layers arranged in superposed relation, either with or without a binding resin, to provide a structural material affording protection against a high energy particle, such as a projectile or fragments therefrom. The structural material has a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabric layers of either glass fibers or nylon fibers alone. A hard outer surface plate of a ceramic material may be included as a component of the structural material in one embodiment thereof, enabling the structural material to successfully withstand the direct impact of certain types of projectiles thereagainst by preventing the penetration of these projectiles and thereby protecting personnel from injury and/or equipment from damage.
Inventors
- 👤 H King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:31
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0414; F41H5/0428; F41H5/0435; A; A41; A41D; A41D31/00; A41D31/04; A41D31/24; A41D31/245; F41H1/00; F41H1/02; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/322; Y10T442/3228; Y10T442/3236; Y10T442/3252
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
195 words
A lightweight impact and delamination resistant, non-metallic armor member for providing protection against high energy particles, such as projectiles, said armor member comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a plurality of layers of fibrous material arranged in stacked superposed relation behind said outer surface layer, each of said layers of fibrous material comprising a woven fabric of glass and nylon fibers, individual glass fibers in each woven fabric layer being interlaced with individual nylon fibers in the same woven fabric layer so as to provide an interwoven relationship between the glass fibers and the nylon fibers in the same fabric layer, and each of said plurality of layers of woven fabric being impregnated with resin so as to be bonded together with said outer surface layer to define a laminated composite plate-like structure having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabrIc layers of either glass fibers or nylon fibers alone.
Claim 2
Dependent Claim
195 words
A lightweight impact and delamination resistant, non-metallic armor member for providing protection against high energy particles, such as projectiles, said armor member comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a plurality of layers of fibrous material arranged in stacked superposed relation behind said outer surface layer, each of said layers of fibrous material comprising a woven fabric of glass and nylon fibers, individual glass fibers in each woven fabric layer being interlaced with individual nylon fibers in the same woven fabric layer so as to provide an interwoven relationship between the glass fibers and the nylon fibers in the same fabric layer, and each of said plurality of layers of woven fabric being impregnated with resin so as to be bonded together with said outer surface layer to define a laminated composite plate-like structure having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabrIc layers of either glass fibers or nylon fibers alone.
Claim 3
Dependent Claim
22 words
A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 1 wherein said glass fibers are roving material.
Claim 4
Dependent Claim
27 words
A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 1 wherein said nylon fibers have lower unit weight than said glass fibers.
Claim 5
Dependent Claim
159 words
An armor material for providing protection against high energy particles, such a projectiles, said armor material comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a woven fabric of glass and nylon fibers, individual glass fibers in said woven fabric being interlaced with individual nylon fibers in said woven fabric so as to provide an interwoven relationship between the glass fibers and the nylon fibers in said woven fabric, and a resinous material coating said glass and nylon fibers and filling the interstices among them so as to form a semistructural fabric material bonded to said outer surface layer and having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including a woven fabric comprising either glass fibers or nylon fibers alone.
Claim 6
Dependent Claim
159 words
An armor material for providing protection against high energy particles, such a projectiles, said armor material comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a woven fabric of glass and nylon fibers, individual glass fibers in said woven fabric being interlaced with individual nylon fibers in said woven fabric so as to provide an interwoven relationship between the glass fibers and the nylon fibers in said woven fabric, and a resinous material coating said glass and nylon fibers and filling the interstices among them so as to form a semistructural fabric material bonded to said outer surface layer and having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including a woven fabric comprising either glass fibers or nylon fibers alone.
Claim 7
Dependent Claim
265 words
A lightweight impact and delamination resistant, non-metallic armor member for providing protection against high energy particles, such as projectiles, said armor member comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a plurality of layers of fibrous material arranged in stacked superposed relation behind said outer surface layer, each of said layers of fibrous material comprising a woven fabric of glass and nylon fibers, individual glass fibers in each woven fabric layer being interlaced with individual nylon fibers in the same woven fabric layer so as to provide an interwoven relationship between the glass fibers and the nylon fibers in the same fabric layer, a resinuous material coating said glass and nylon fibers of each of said layers of woven fabric and filling the interstices among said fibers so as to bond said plurality of layers of woven fabric together with said outer surface layer, the relative proportions of glass and nylon fibers in each of said layers of woven fabric lying between 90 parts of glass to 10 parts of nylon and 10 parts of glass to 90 parts of nylon, by weight, and said outer surface layer and said plurality of layers of woven fabric bonded together therewith defining a laminated composite plate-like structure having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabric layers of either glass fibers or nylon fibers alone.
Claim 8
Dependent Claim
265 words
A lightweight impact and delamination resistant, non-metallic armor member for providing protection against high energy particles, such as projectiles, said armor member comprising: an outer surface layer of material having a hardness and compressive strength substantially equal to or greater than that of hard steel, a plurality of layers of fibrous material arranged in stacked superposed relation behind said outer surface layer, each of said layers of fibrous material comprising a woven fabric of glass and nylon fibers, individual glass fibers in each woven fabric layer being interlaced with individual nylon fibers in the same woven fabric layer so as to provide an interwoven relationship between the glass fibers and the nylon fibers in the same fabric layer, a resinuous material coating said glass and nylon fibers of each of said layers of woven fabric and filling the interstices among said fibers so as to bond said plurality of layers of woven fabric together with said outer surface layer, the relative proportions of glass and nylon fibers in each of said layers of woven fabric lying between 90 parts of glass to 10 parts of nylon and 10 parts of glass to 90 parts of nylon, by weight, and said outer surface layer and said plurality of layers of woven fabric bonded together therewith defining a laminated composite plate-like structure having a high resistance to the penetration of a high energy particle in relation to its weight which is superior to the penetration resistance of a comparable structure of the same weight but including woven fabric layers of either glass fibers or nylon fibers alone.
Claim 9
Dependent Claim
44 words
A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 5 wherein the material of said outer surface layer has a compressive strength substantially equal to or above 100,000 psi and a hardness substantially equal to or above Rockwell C-50.
Claim 10
Dependent Claim
37 words
A lightweight impact and delamination resistant, non-metallic armor member as set forth in claim 5, wherein the material of said outer surface layer is selected from the group consisting of glass, alumina, boron carbide, or silicon carbide.
References Cited (Backward Citations)
US2477407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |