GB2335388A - Composite material particularly for use as anti-stab armour - Google Patents

Composite material particularly for use as anti-stab armour Download PDF

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Publication number
GB2335388A
GB2335388A GB9805983A GB9805983A GB2335388A GB 2335388 A GB2335388 A GB 2335388A GB 9805983 A GB9805983 A GB 9805983A GB 9805983 A GB9805983 A GB 9805983A GB 2335388 A GB2335388 A GB 2335388A
Authority
GB
United Kingdom
Prior art keywords
layer
composite material
material according
rigid elements
layers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9805983A
Other versions
GB9805983D0 (en
Inventor
David Horstcraft
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIGHTWEIGHT BODY ARMOUR LIMITE
Original Assignee
LIGHTWEIGHT BODY ARMOUR LIMITE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LIGHTWEIGHT BODY ARMOUR LIMITE filed Critical LIGHTWEIGHT BODY ARMOUR LIMITE
Priority to GB9805983A priority Critical patent/GB2335388A/en
Publication of GB9805983D0 publication Critical patent/GB9805983D0/en
Publication of GB2335388A publication Critical patent/GB2335388A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
    • B32B3/22—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of spaced pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0442—Layered armour containing metal
    • F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/30—Iron, e.g. steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing

Abstract

A composite material (10) comprises a plurality of rigid elements (R) each having a periphery and a centre, the plurality of rigid elements (R) being arranged in first and second layers (17,22) secured on first sides to first and second support layers (19,23) respectively by adhesive (20,25). The first and second layers (17,22) of rigid elements (R) are generally co-planar with each other and located relative to each other such that areas where a group of rigid elements (R) come together in one layer (17,22) correspond with the centres of rigid elements (R) on the other layer (20 or 17). The material (10) is primarily for use in body armour.

Description

1 Title: Composite Material
Description of Invention
2335388 The invention relates to a composite material, and in particular, although not exclusively, to such a material for use in the manufacture of anti-stab body armour.
Anti-stab body armour is well known, often in the form of anti-stab vests or jackets, for use by police forces and security guards. In general, these comprise the shell of a vest or jacket, with pockets into which armour inserts may be inserted as required. The armour inserts are generally constructed from composite materials comprising a number of layers of different materials.
In the United Kingdom standards for such body armour are set by the Home Office and only those articles of body armour which meet the standards may be purchased by police forces. As the standards are raised, such that body armour has to resist greater energies of knife impact, alternative forms of composite material have to be developed.
It is an object of the present invention to provide a novel form of composite material.
According to a first aspect of the invention, there is provided a composite material comprising a plurality of rigid elements each having a periphery and a centre, the plurality of rigid elements being arranged in first and second layers secured on first sides to first and second support layers respectively by adhesive, the first and second layers of rigid elements being generally co-planar with each other and located relative to each other such that 2 areas where peripheries of a group of rigid elements come together in one layer correspond with the centres of rigid elements on the other layer.
The composite material according to the invention provides the advantage that it can withstand knife impact energies well in excess of the current home office standard.
Preferably, the composite material comprises a flexible elastic backing layer. The first layer of rigid elements may be secured on a second side by adhesive to the backing layer.
Preferably the backing layer comprises fibrous material impregnated with a resin or the like.
The fibrous material may comprise glass fibre and/or nylon fibres and/or carbon fibres. The fibrous material may comprise two layers of woven roving glass fibre.
The fibrous material is preferably impregnated with a polyurethane compound.
Preferably the resin or the like has a Shore hardness in the range 50-55.
Preferably the rigid elements are polygonal and tessellate to provide substantially complete layers. The rigid elements may be rectangular or square.
Conveniently each rigid element may have dimensions in the range 20mm, by 20mm to 75mm by 50mm. Each rigid element may have dimensions in the range 25mm by 35mm to 50mm by 60mm.
Preferably the rigid elements are the same in the first and second layers.
The rigid elements may be metallic or ceramic or glass reinforced plastics material. Conveniently the rigid elements may be stainless steel, in which case each rigid element may have a thickness in the range 0.2mm to 0.6mm.
Conveniently the support layers comprise films of polypropylene, polyester or polyvinyl chloride.
The composite material may further comprise a facing layer to which the second layer of rigid elements is secured on it's second side by adhesive.
3 Preferably the composite material comprises a first sub-composite layer comprising the backing layer, first layer of rigid elements and first film, and a second sub-composite layer comprising the facing layer, second layer of rigid elements and second film.
Conveniently the adhesive may be an acrylic or zinc oxide.
The composite material may comprise an anti-ballistic layer between the backing layer and the first rigid element layer.
According to a second aspect of the invention, there is provided an insert for an article of body armour comprising composite material according to the first aspect of the invention.
According to a third aspect of the invention, there is provided an article of body armour comprising composite material according to the first aspect of the invention.
An example of a composite material according to the invention will now be described, by way of example only, with reference to the accompanying drawings in which:
FIGURE 1 is a cross section through a portion of a first embodiment of a composite material according to the invention, FIGURE 2 is a plan view illustrating the relative positions of rigid elements in first and second layers within the material of Figure I; FIGURE 3 is a cross section through a second embodiment of a composite material according to the invention; and, FIGURE 4 is a cross section through a third embodiment of a composite material according to the invention.
Referring to Figure 1, a composite material 10 comprises a first subcomposite layer 11 and a second sub-composite layer 12, which are separate to each other.
The first sub-composite layer 11 comprises a backing layer 13 which in turn comprises a first glass fibre mat 14 and a second glass fibre mat 15 impregnated with a resin 16. The first and second glass fibre mats 14,15, are 4 each woven roving mats, and in this example having weights of 290 gm-2 and 830gm-2. The resin 16 is in this example a polyurethane compound resin providing a weight of 430gm-2. The first sub-composite layer 11 further comprises a first layer 17 of rigid elements P, in this case stainless steel elements, each element being rectangular and of dimensions 30 mm x 50 mm and of 0.4 mm thickness. The rigid elements R tessellate to form a substantially complete layer 17. The first-composite layer 11 further comprises a support layer in the form of a film 19.
The first rigid element layer 17 is secured on a first side to the film 19 by adhesive 20, and on a second side to the backing layer 13 by means of adhesive 18.
The second sub-composite layer 12 comprises a facing layer 21 comprising a relatively rigid material, in this example an aramid rubberised on both sides. The second sub-composite layer 12 further comprises a second layer 22 of rigid elements R, the rigid elements R being identical to those in the first rigid element layer 17. The second sub-composite layer 12 further comprises a support layer in the form of a film 23, of similar kind to the film 19 previously described.
The second rigid element layer 22 is secured by adhesive 24 to the facing layer 21 on a first side, and by adhesive 25 to the film 233 on a second side.
The first sub-composite layer 11 and second sub-composite layer 12 are combined to form the composite material 10 by putting them together film to film and in doing so ensuring that the first and second rigid element layers 17,22, are aligned as follows. Areas where a plurality of peripheries of the rigid elements R come together in the first layer, in this case where four comers of the rigid elements R meet, referenced A in figure 2, are aligned with the centre of a rigid element R in the second rigid element layer 23. Likewise, areas where four corners of the rigid elements R meet in the second rigid element layer 22, referenced B in figure 2, are aligned with the centre of a rigid element R in the first rigid element layer 17, Referring now to Figure 3, in which features common with Figures 1 and 2 are like referenced, a second embodiment of a composite material. 30 according to the invention is illustrated in cross section. In the composite material 30 the backing layer 13 is a separate layer and not part of the first subcomposite layer 11. The first sub-composite layer 11 comprises a facing layer 31 to which the first layer of rigid elements 17 is secured by adhesive 18. In all other respects the material 30 is as for the material 10.
Referring now to Figure 4, in which again features common with Figures 1, 2 and 3 are like referenced, a third embodiment of a composite material 40 according to the invention is illustrated in cross section. The material 40 is similar to the material 30 but comprises an additional layer between the backing layer 13 and first sub-composite layer 11. The additional layer 41 comprises a soft armour ballistic pack of known kind. The addition of this layer 41 enables the composite material 40 to withstand knife impacts and ballistic impacts.
The glass fibre mats 14,15, within the backing layer 13, may be replaced with any other appropriate fibrous material. For example, non woven glass fibre mats, woven nylon mats or carbon fibre mats may be used.
The polyurethane compound resin 16 with which the fibrous material is impregnated may be replaced with other appropriate materials. The materials must be flexible and elastic, in order to provide an acceptable level of comfort for the wearer of body armour constructed from the composite material 10, and must also have an appropriate hardness to provide effective protection. A shore hardness in the range 50 to 55 is ideal, as this provides sufficient support for the rigid elements R when subject to a knife impact, whilst also providing appropriate energy absorption properties.
The rigid elements R may be of different dimensions, for example the rigid elements may have dimensions within the range 20 mm x 20 mm to 75 6 mm, x 50 mm. For rigid elements R made of stainless steel a thickness in the range 0.2 nun to 0.6 mm may be substituted for the thickness described above.
Rigid elements R of other materials with suitable properties may also be used, for example ceramics and a glass reinforced plastics. Clearly any material used must not be brittle.
The films 19 and 23 may be substituted for other appropriate materials, for example acrylic with a weight of 25 gM-2, or polyester or polyvinyl chloride (PVC).
The facing layer 2 1, or facing layers 2 1,3 1, may comprise any relatively rigid material which is capable of supporting the weight of the rigid elements R secured to it, whilst providing sufficient flexibility for comfort.
The adhesive used in all adhesive layers, 18,20,24 and 25, may be in the form of double sided adhesive tape, or liquid adhesive applied directly to the surface concerned. Acrylic adhesive, as described above, is particularly suitable as it is waterproof and heatproof to approximately 750C, however any alternative adhesive having appropriate properties may be used.
The composite materials 10,30,40, are used to manufacture articles of body armour as follows. A shell garment, generally in the form of a vest or jacket, is manufactured from a suitable material such as heavy cotton, and is provided with pockets for receipt of armour inserts. Portions of the composite material 10 are cut to the shapes desired for the armour inserts, ensuring that the portions cut from the first and second subcomposite layers 11,12, are aligned relative to each other as previously described. The portions cut from each of the layers are then attached to each other around part, or all, of their peripheries, typically only at shoulder points and along the lower edge. Limitine the attachment between the layers to these areas, provides maximum flexibility and thus maximum comfort for the wearer. The portions of composite material 10 are then encased in a waterproof cover to complete the armour inserts. The inserts are used with the backing layer towards the body and the facing layer away from the body.
7 The features disclosed in the foregoing description, the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately, or in any combination of such features, be utilised for realising the invention in diverse forms thereof
8

Claims (1)

1. A composite material comprising a plurality of rigid elements each having a periphery and a centre, the plurality of rigid elements being arranged in first and second layers secured on first sides to first and second support layers respectively by adhesive, the first and second layers of rigid elements being generally co-planar with each other and located relative to each other such that areas where a group of elements come together in one layer correspond with the centres of elements on the other layer.
2. A composite material according to claim 1 wherein it further comprises a flexible elastic backing layer.
A composite material according to claim 2 wherein the first layer of rigid elements is secured on a second side by adhesive to the backing layer.
4. A composite material according to claim 2 or 33 wherein the backing layer comprises fibrous material impregnated with a resin or the like, A composite material according to claim 4 wherein the fibrous material comprises glass fibre and/or nylon fibres and/or carbon fibres.
6. A composite material according to claim 5 wherein the fibrous material comprises two layers of woven roving glass fibre.
7. A composite material according to any one of claims 4 to 6 wherein the fibrous material is impregnated with a polyurethane compound.
8. A composite material according to any one of claims 4 to 7 wherein the resin or the like has a Shore hardness in the range 50-55.
9 9. A composite material according to any one of the preceding claims wherein the rigid elements are polygonal and tessellate to provide substantially complete layers.
10. A composite material according to claim 9 wherein the rigid elements are rectangular or square.
11. A composite material according to claim 10 wherein each rigid element has dimensions in the range 20mm by 20mm to 75nun by 50mm.
12. A composite material according to claim 11 wherein each rigid element has dimensions in the range 25mm by 35mm to 50mm by 60mm.
13. A composite material according to any one of the preceding claims wherein the rigid elements are the same in the first and second layers.
14. A composite material according to any one of the preceding claims wherein the rigid elements are metallic or ceramic or glass reinforced plastics material.
A composite material according to claim 14 wherein the rigid elements are stainless steel.
16. A composite material according to claim 15 wherein each rigid element has thickness in the range 0.2mm to 0.6mm.
17. A composite material according to any one of the preceding claims wherein the support layers comprise films of polypropylene, polyester or polyvinyl chloride.
18. A composite material according to any one of the preceding claims wherein it further comprises a facing layer to which the second layer of rigid elements is secured on it's second side by adhesive.
19. A composite material according to claim 18 as dependent on claim 3 wherein it comprises a first sub-composite layer comprising the backing layer, first layer of rigid elements and first film, and a second subcomposite layer comprising the facing layer, second layer of rigid elements and second film.
20. A composite material according to any one of claims 2 to 17 as dependent on claim 2 wherein it further comprises first and second facing layers to which the first and second layers of rigid elements are secured on their second sides.
21. A composite material according to claim 19 wherein it comprises the backing layer, a first sub-composite layer comprising the first facing layer, first layer of rigid elements and the first support layer, and a second sub-composite layer comprising the second facing layer, second layer of rigid elements and the second support layer.
22. A composite material according to claim 21, wherein it further comprises an anti-ballistic layer between the backing layer and the first subcomposite layer.
23. A composite material according to anyone of the preceding claims 0 wherein the adhesive is an acrylic or zinc oxide.
24. A composite material substantially as herein before described with reference to the accompanying drawings, 25. An insert for an article of body armour comprising composite material according to any one of the preceding claims.
26. An article of body armour comprising composite material according to any one of claims 1 to 25.
27. Any novel feature or novel combination of features as herein disclosed and/or shown in the accompanying drawings.
GB9805983A 1998-03-21 1998-03-21 Composite material particularly for use as anti-stab armour Withdrawn GB2335388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9805983A GB2335388A (en) 1998-03-21 1998-03-21 Composite material particularly for use as anti-stab armour

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9805983A GB2335388A (en) 1998-03-21 1998-03-21 Composite material particularly for use as anti-stab armour

Publications (2)

Publication Number Publication Date
GB9805983D0 GB9805983D0 (en) 1998-05-20
GB2335388A true GB2335388A (en) 1999-09-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8113104B2 (en) 2004-09-30 2012-02-14 Aceram Materials and Technologies, Inc. Ceramic components with diamond coating for armor applications
US8215223B2 (en) 2001-07-25 2012-07-10 Aceram Materials And Technologies Inc. Ceramic components, ceramic component systems, and ceramic armour systems
US20180050551A1 (en) * 2014-08-12 2018-02-22 Benj&Soto Composites and objects with customized fabric printing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723214A (en) * 1952-08-25 1955-11-08 Bjorksten Res Lab Inc Elastic cascading impact absorber
US3563836A (en) * 1968-05-23 1971-02-16 Bell Aerospace Corp Projectile armor fabrication
US3813281A (en) * 1973-01-30 1974-05-28 Gulf & Western Ind Prod Co Composite flexible armor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723214A (en) * 1952-08-25 1955-11-08 Bjorksten Res Lab Inc Elastic cascading impact absorber
US3563836A (en) * 1968-05-23 1971-02-16 Bell Aerospace Corp Projectile armor fabrication
US3813281A (en) * 1973-01-30 1974-05-28 Gulf & Western Ind Prod Co Composite flexible armor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8215223B2 (en) 2001-07-25 2012-07-10 Aceram Materials And Technologies Inc. Ceramic components, ceramic component systems, and ceramic armour systems
US8113104B2 (en) 2004-09-30 2012-02-14 Aceram Materials and Technologies, Inc. Ceramic components with diamond coating for armor applications
US20180050551A1 (en) * 2014-08-12 2018-02-22 Benj&Soto Composites and objects with customized fabric printing

Also Published As

Publication number Publication date
GB9805983D0 (en) 1998-05-20

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