GB2128720A - Protection of structural surfaces - Google Patents

Protection of structural surfaces Download PDF

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Publication number
GB2128720A
GB2128720A GB08230194A GB8230194A GB2128720A GB 2128720 A GB2128720 A GB 2128720A GB 08230194 A GB08230194 A GB 08230194A GB 8230194 A GB8230194 A GB 8230194A GB 2128720 A GB2128720 A GB 2128720A
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United Kingdom
Prior art keywords
shield
door
panels
penetration
surface according
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Granted
Application number
GB08230194A
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GB2128720B (en
Inventor
Michael Sacks
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Individual
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Individual
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Filing date
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Priority to GB08230194A priority Critical patent/GB2128720B/en
Publication of GB2128720A publication Critical patent/GB2128720A/en
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Expired legal-status Critical Current

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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
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • 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
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/06—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 structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • 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
    • B32B5/18—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 features of a layer of foamed material
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/04—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against air-raid or other war-like actions
    • E04H9/10—Independent shelters; Arrangement of independent splinter-proof walls
    • 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
    • F41H5/0414—Layered armour containing ceramic material
    • F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
    • 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
    • F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
    • F41H5/0478—Fibre- or fabric-reinforced layers in combination with plastics layers
    • 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
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Building Environments (AREA)

Abstract

A structural surface (1), particularly a door or wall of a building, is protected against penetration by bullets or other missiles by means of a shield applied to the surface. The shield comprises a sandwich of penetration- resistant aramid fabric (A) and impact- absorbing backing sheets (b) which may comprise polycarbonate sheeting and resilient plastics foam material. A layer (2) of hard, brittle material, e.g. ceramic, maybe provided in front of the fabric (A) where resistance to penetration by high velocity bullets is required. <IMAGE>

Description

SPECIFICATION Protection of structural surfaces This invention relates to the protection of structural surfaces, such as partitions, screens, walls and the like, against penetration by shrapnel, bullets and other impelled fragments and offensive missiles.
Structural surfaces can be protected against penetration by use of massive, strong materials such as concrete and metal. However, this mode of protection may not always be wholly satisfactory, having regard, for example, to size and weight considerations, particularly where protection is required for portable buildings, rooms of commercial and industrial premises and in other like contexts where the use of bulky, heavy materials would be inconvenient or inappropriate.
Penetration-resistant materials of a lighter nature are also known, such asfabricwoven from aramid fibres of high tensile strength and high stretch resistance as sold by Du Pont under the trade name KEVLAR. This fabric can be used effectively in personal body armour, such as bullet-proofvests, and reference is made in this respect byway of illustration to U.K. Patent 1,556,245, which describes the use of Kevlar layers backed by impact-absorbing plastics materials which limits shocktransmission in use to the wearer's body, and published U.K. Patent Application 2061089 which describes the use of Kevlar layers behind a front supported layerformed from a rigid, brittle material (such as ceramictiles)which actsto break up high velocity missiles.However, it has been found that, where Kevlarfabric is applied directly to a structural surface, surprisingly, satisfactory protection is not always achieved in thatthe penetration resistance of the material is reduced and/or on impact the structural surface shatters and fragments are thrown dangerously from same.
An object of the present invention is to provide adequate and effective penetration protection for a structural surface without requiring the use of unduly heavy and bulky protective materials.
According to the invention therefore there is provided a structural surface having applied thereto a penetration-resisting protective shield, characterised in that said shield comprises one or more layers of a closely woven fabric which is made from aramidfibres of high tensile strength and high stretch resistance such asto be capable of resisting penetration bya bullet, and one or more backing sheets formed from an impact-absorbing material behind said fabric.
With thisarrangementit has been found possible to achieve effective protection even in the case where the protective shield is applied directly to a readily shatterable structural surface such as a thin wooden panel, this being a consequence ofthe action of the backing material which, by virtue of the flexible or resilient support provided by same, reinforces the penetration resistance ofthe fabric and limits shatter producing shocktransmission to the structural surface.
The said protective shield may be applied to the said surface in any suitable manner. Thus, the shield may be applied to the front side of said surface (i.e. the side likely to be exposed to missile orfragmentthreat), either, loosely (e.g. by hanging on the surface) or securely (e.g. by bonding or screwing to the surface).
Alternatively the shield may be incorporated, loosely or securely, within the surface (e.g. by location between front and backskinsthereof).
Moreover, the shield may be utilised in relation to any suitable structural surface in any suitable context.
For example, the shield may be applied to a wall, floor, ceiling, roof, door, internally or externally of a building such as a shop, office, house, factory, or bomb or blast shelter. The shield may also be applied to wall or partition surfaces of cupboards, desks safes, counters, vehicles or in any other suitable context.
The invention may be utilised to give protection at a specific location of limited area, for example, in the central region of a door or counter or front panel of a desk or other similar partition or screen or like structure. Alternatively protection of a more comprehensive nature may be afforded, for example extending throughout all or substantially all of the exposed surface area of a room or other enclosure, there being a plurality of said shields applied to different parts of the said surface area, (including for example wall, door and doorframe surfaces) possibly with said shields abutting or overlapping each other.
With regardto the construction ofthe shield, preferably there is a plurality of layers of aramid fabric (preferablyformed from Kevlar as mentioned above) which layers may be interconnected by bonding and/or stitching in one or more groups. The impactabsorbing backing material maytakeanysuitable form although in a preferred embodiment a plastics material particularly comprising one or more thin flexible semi-stiff polycarbonate sheets and/or one or more resiliently compressible foamed plastics sheets is used. For high velocity protection, a front layer of supported rigid, brittle material such as ceramic material bonded to one or more sheets of aramid fabric may be used.The shield may be a selfsupporting unitary structure in thatthe component layers thereof may be interconnected and/or enclosed within a bag or other container.
Co-pending Appication 8132131 discloses an alarm system, for use in protecting a surface against unauthorised penetration thereof, comprising a layer of conductive material arranged to extend over said surface and an electric control circuit adapted to respond to a charge in electrical properties of said layer caused by penetration or breakage thereof; and the specification of such Application describes various suitable conductive materials including metal mesh, metal foil, conductive paint and the like.
If desired, said alarm system may be utilised in conjunction with the present invention in that the same said structural surface may have the said shield and also said conductive layer applied thereto. Such layer and shield may be constructed separately and possibly applied to different parts of said surface although a Iternatively, if desired, the layer and shield may be combined or interconnected for example by attachment of the layer to the shield or incorporation of same therein.
The invention will now be described further byway of example only and with reference to the accompanying drawings in which Fig. lisa diagrammatic sectional view th rough part of a doorfitted with a protective shield in accordance with one embodiment of the invention; Fig. 2 is a diagrammatic perspective view of one form of a blastshelterfitted with shields in accordance with a further embodiment of the invention.
Fig. 1 shows a protective shield applied to a door, which may be an external doorofa building or shelter or an internal room door of any suitable premises. The door has an internal cavity which may be the usual cavity present in doors of the kind constructed with inner and outer panels 1,2 secured to a peripheral frame structure, or which may be a purpose-constructed cavity in a solid door.
The protective shield is fitted within the cavity and comprises, from frontto back: A. A number of layers (say 8to 30) of ballistic fabric woven from Kevlar in the form of individual flexible fabric sheets stitched andiorbondedtogetherinone or more groups, the resulting assembly being in the form of a rigid board or being relatively flexible as desired; B. An impact-absorbing backing layer comprising one or more sheets ofthin,flexible semi-stiff polycar bonate (such as the transparent polycarbonate sold underthe trade name LEXAN) and one or more sheets of a resilientlycompressiblefoamed plastics material (such as the foamed, cross-linked, closed-cell polyethylene sold underthe trade name PLASTAZOTE or EVAZOTE).
This protective shield may be similar in composition to that described in Patent No. 1,556,245 to which reference is made forfurther details thereof.
The shield may be a relatively tight fit between the panels in the cavity and this may be relied upon to hold the shield securely in position. Alternatively, or additionally,theshield may be securelyfixedto one or both ofthe panels by bonding or screwing or in any othersuitable manner. If desired, the shield may be contained within a bag.
It will be understood that the shield may be fitted to existing door by opening (orforming) the said cavity (e.g. by removing one panel), installing the shield, and then closing the cavity (e.g. by replacing the removed panel).
With this arrangment, if the door is now exposed to impelled fragments, or bullets orthe likefrom the front surface thereof, the protective shield can act to prevent penetration thereofthrough the door, the backing material acting to promote the penetration resistance of the Kevlar layers and also to reduce the likelihood of shattering of the inner door surface.
If greater protection is required, for example, to resist penetration by high velocity bullets, a supported layer of hard, brittle material (particularly cermic material) may be provided in front of the Kevlar layers, for example as described Patent Application 2061089 to which reference is made forfu rther detailsthereof.
The shield or a plurality of shields may extend over the entire (or substantially the entire) surface area of the door depending on the extent of protection required. Also similar shields may be applied to adjacentsurfacesforexample, shields may be inserted into cavities in the doorframe and possiblyalso any adjoining skirting board and may be applied to or incorporated in adjacent wall panels or other wall structures whereby as desired comprehensive protection forthe associated room or building can be obtained. Such adjoining shields may be abutted or overlapped as required.
Fig. 2 shows a shelter, for example a portable blast-proof bomb shelter. The shelter comprises a container having metal walls and an outer penetration-resistant screen.
The screen comprises a numberofvertical panels or flaps 3 which are hinged to an arrangement oftop panels 4, all such panels 3,4 being formed from Kevlar fabric backed with an impact-absorbing material, for example of like construction to the shield shown in Fig. 1. The panels are preferably in the form of rigid boards although this is not necessarily the case.
With this arrangement protection against fragments missiles and the like can be achieved without undue bulkorweight.
To facilitate transportation, the arrangment may be such that panels 3 can be hinged upwardly to stack on top ofthe panels 4 on the roof.
It is of course to be understood that the invention is not intended to be restricted to the details ofthe above embodimentwhich are described by way of example only.
CLAIMS (Filed on 21.10.83) 1. Astructural surface having applied thereto a penetration-resisting protective shield, characterised in thatsaid shield comprises one or more layers a closely-woven fabric which is made from aramid fibres of high tensile strength and high stretch reisistance such as to be capable of resisting penetration by a bullet, and one or more backing sheets formed an impact-absorbing material behind said fabric.
2. A structural surface according to claim 1, having front and back skins and wherein said shield is located between said skins.
3. Astructural surface according to claim 1 or2, which constitutes the exposed surface area of a room or other enclosure and wherein a plurality of said shields are applied to different parts ofthe said surface area.
4. Astructural surface according to claim 1 or 2, which constitutes a door and wherein said shield is located within an internal cavity ofthe door.
5. Astructural surfaceaccordingto claim 1 or2, which constitutes a portable blast-proof bomb shelter.
6. A structural surface according to claim 5, wherein said bomb shelter comprises a container having metal walls and an outer penetration-resistant screen, said screen comprising said shields inthe form of hinged panels.
7. A structural surface according to any one of claims 1 to 6, wherein there is a plurality of layers of aramid fabric which layers are interconnected by bonding and/orstitching in one or more groups.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (14)

**WARNING** start of CLMS field may overlap end of DESC **. although a Iternatively, if desired, the layer and shield may be combined or interconnected for example by attachment of the layer to the shield or incorporation of same therein. The invention will now be described further byway of example only and with reference to the accompanying drawings in which Fig. lisa diagrammatic sectional view th rough part of a doorfitted with a protective shield in accordance with one embodiment of the invention; Fig. 2 is a diagrammatic perspective view of one form of a blastshelterfitted with shields in accordance with a further embodiment of the invention. Fig. 1 shows a protective shield applied to a door, which may be an external doorofa building or shelter or an internal room door of any suitable premises. The door has an internal cavity which may be the usual cavity present in doors of the kind constructed with inner and outer panels 1,2 secured to a peripheral frame structure, or which may be a purpose-constructed cavity in a solid door. The protective shield is fitted within the cavity and comprises, from frontto back: A. A number of layers (say 8to 30) of ballistic fabric woven from Kevlar in the form of individual flexible fabric sheets stitched andiorbondedtogetherinone or more groups, the resulting assembly being in the form of a rigid board or being relatively flexible as desired; B. An impact-absorbing backing layer comprising one or more sheets ofthin,flexible semi-stiff polycar bonate (such as the transparent polycarbonate sold underthe trade name LEXAN) and one or more sheets of a resilientlycompressiblefoamed plastics material (such as the foamed, cross-linked, closed-cell polyethylene sold underthe trade name PLASTAZOTE or EVAZOTE). This protective shield may be similar in composition to that described in Patent No. 1,556,245 to which reference is made forfurther details thereof. The shield may be a relatively tight fit between the panels in the cavity and this may be relied upon to hold the shield securely in position. Alternatively, or additionally,theshield may be securelyfixedto one or both ofthe panels by bonding or screwing or in any othersuitable manner. If desired, the shield may be contained within a bag. It will be understood that the shield may be fitted to existing door by opening (orforming) the said cavity (e.g. by removing one panel), installing the shield, and then closing the cavity (e.g. by replacing the removed panel). With this arrangment, if the door is now exposed to impelled fragments, or bullets orthe likefrom the front surface thereof, the protective shield can act to prevent penetration thereofthrough the door, the backing material acting to promote the penetration resistance of the Kevlar layers and also to reduce the likelihood of shattering of the inner door surface. If greater protection is required, for example, to resist penetration by high velocity bullets, a supported layer of hard, brittle material (particularly cermic material) may be provided in front of the Kevlar layers, for example as described Patent Application 2061089 to which reference is made forfu rther detailsthereof. The shield or a plurality of shields may extend over the entire (or substantially the entire) surface area of the door depending on the extent of protection required. Also similar shields may be applied to adjacentsurfacesforexample, shields may be inserted into cavities in the doorframe and possiblyalso any adjoining skirting board and may be applied to or incorporated in adjacent wall panels or other wall structures whereby as desired comprehensive protection forthe associated room or building can be obtained. Such adjoining shields may be abutted or overlapped as required. Fig. 2 shows a shelter, for example a portable blast-proof bomb shelter. The shelter comprises a container having metal walls and an outer penetration-resistant screen. The screen comprises a numberofvertical panels or flaps 3 which are hinged to an arrangement oftop panels 4, all such panels 3,4 being formed from Kevlar fabric backed with an impact-absorbing material, for example of like construction to the shield shown in Fig. 1. The panels are preferably in the form of rigid boards although this is not necessarily the case. With this arrangement protection against fragments missiles and the like can be achieved without undue bulkorweight. To facilitate transportation, the arrangment may be such that panels 3 can be hinged upwardly to stack on top ofthe panels 4 on the roof. It is of course to be understood that the invention is not intended to be restricted to the details ofthe above embodimentwhich are described by way of example only. CLAIMS (Filed on 21.10.83)
1. Astructural surface having applied thereto a penetration-resisting protective shield, characterised in thatsaid shield comprises one or more layers a closely-woven fabric which is made from aramid fibres of high tensile strength and high stretch reisistance such as to be capable of resisting penetration by a bullet, and one or more backing sheets formed an impact-absorbing material behind said fabric.
2. A structural surface according to claim 1, having front and back skins and wherein said shield is located between said skins.
3. Astructural surface according to claim 1 or2, which constitutes the exposed surface area of a room or other enclosure and wherein a plurality of said shields are applied to different parts ofthe said surface area.
4. Astructural surface according to claim 1 or 2, which constitutes a door and wherein said shield is located within an internal cavity ofthe door.
5. Astructural surfaceaccordingto claim 1 or2, which constitutes a portable blast-proof bomb shelter.
6. A structural surface according to claim 5, wherein said bomb shelter comprises a container having metal walls and an outer penetration-resistant screen, said screen comprising said shields inthe form of hinged panels.
7. A structural surface according to any one of claims 1 to 6, wherein there is a plurality of layers of aramid fabric which layers are interconnected by bonding and/orstitching in one or more groups.
8. A structural surface according to any one of
claims 1 to 7, wherein said backing material comprises a plastics material.
9. A structural surface according to claim 8, wherein said plastics material comprises one or more thin flexible semi-stiff polycarbonate sheets.
10. A structural surface according to claim 8 or 9, wherein said plastics material comprises one or more resiliently compressible foamed plastics sheets.
11. Astructural surface according to anyone of claims 1 to 10, wherein said shield is provided with a front layer of supported rigid brittle material.
12. Astructural surface according to claim 11, wherein said brittle material comprises a ceramic material and this is bonded to one or more sheets of aramid fabric.
13. Astructural surface according to any one of claims 1 to 12, further incorporating a conductive layer of an alarm system applied to said surface for use in protecting against unauthorised penetration thereof.
14. A structural surface according to claim 1, su bstantial[y as hereinbefore described with refer encetoand as illustrated in Fig. 1 or Fig. 2 of the accompanying drawings.
GB08230194A 1982-10-21 1982-10-21 Protection of structural surfaces Expired GB2128720B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08230194A GB2128720B (en) 1982-10-21 1982-10-21 Protection of structural surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08230194A GB2128720B (en) 1982-10-21 1982-10-21 Protection of structural surfaces

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Publication Number Publication Date
GB2128720A true GB2128720A (en) 1984-05-02
GB2128720B GB2128720B (en) 1986-04-16

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205336A (en) * 1987-06-02 1988-12-07 Michael Sacks Bullet resistant partitions
GB2219016A (en) * 1988-05-25 1989-11-29 Blackbourne And Mccombe Ltd Building of panels connected by brackets
EP0507942A1 (en) * 1990-02-28 1992-10-14 ZUFLE, T.Tyler Reinforced soft and hard body armor
WO1995004911A1 (en) * 1993-08-04 1995-02-16 Michael Sacks Layered armoured shield
GB2294081A (en) * 1994-09-17 1996-04-17 Trussbilt Inc Layered security door panel
GB2347112A (en) * 1999-02-26 2000-08-30 Kinetic Special Vehicles Limit Anti-ballistic panel
FR2870332A1 (en) * 2004-05-17 2005-11-18 Rbe Sa COMPOSITE MATERIAL FOR SHIELDING
WO2006019820A2 (en) 2004-07-16 2006-02-23 Simula, Inc. Method and system for determining cracks and broken components in armor
GB2440213A (en) * 2006-07-19 2008-01-23 Barry Dawson Foam expelling armour arrangement
FR2914337A1 (en) * 2007-03-28 2008-10-03 Von Roll Isola France PANELS OF PARTITION BALLS.
EP2508336A1 (en) * 2011-04-04 2012-10-10 Industrial Neo Tex SA Fire-proof plate
GB2509921A (en) * 2013-01-17 2014-07-23 Jonathan Rusby Furniture panel comprising polymeric foam sandwich

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453873A (en) * 1973-02-02 1976-10-27 Norton Co Protective guard mounted on a turbine engine for aircraft
GB1534721A (en) * 1977-03-16 1978-12-06 Unitex Ltd Protective material for resisting penetration by bullets shrapnel or the like
GB1561385A (en) * 1976-02-18 1980-02-20 Tig Bicord Ag Bulletproof articles
GB2041178A (en) * 1979-01-30 1980-09-03 Sacks M Protective screen
GB1578640A (en) * 1976-04-26 1980-11-05 Elteka Kunststoff Bullet-resistant armour
GB2081852A (en) * 1980-07-04 1982-02-24 Sacks Michael Protective shields
GB2099963A (en) * 1981-05-19 1982-12-15 Apprich Harry The protection of sheet material from the effect of explosive charges

Patent Citations (7)

* Cited by examiner, † Cited by third party
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GB1453873A (en) * 1973-02-02 1976-10-27 Norton Co Protective guard mounted on a turbine engine for aircraft
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EP0295002A2 (en) * 1987-06-02 1988-12-14 Michael Sacks Partitions
EP0295002A3 (en) * 1987-06-02 1990-10-03 Michael Sacks Partitions
GB2205336A (en) * 1987-06-02 1988-12-07 Michael Sacks Bullet resistant partitions
GB2219016A (en) * 1988-05-25 1989-11-29 Blackbourne And Mccombe Ltd Building of panels connected by brackets
EP0507942A1 (en) * 1990-02-28 1992-10-14 ZUFLE, T.Tyler Reinforced soft and hard body armor
EP0507942B1 (en) * 1990-02-28 1999-10-20 S.P.B.A. International, Inc. Reinforced soft and hard body armor
US6138275A (en) * 1993-08-04 2000-10-31 Sacks; Michael Layered armored shield
WO1995004911A1 (en) * 1993-08-04 1995-02-16 Michael Sacks Layered armoured shield
GB2294081A (en) * 1994-09-17 1996-04-17 Trussbilt Inc Layered security door panel
US5660021A (en) * 1994-09-17 1997-08-26 Trussbilt, Inc. Security of buildings and other structures
GB2294081B (en) * 1994-09-17 1998-10-21 Trussbilt Inc Improvements in and relating to security of buildings and other structures
GB2347112B (en) * 1999-02-26 2003-04-16 Kinetic Special Vehicles Ltd Anti-ballistic panel
GB2347112A (en) * 1999-02-26 2000-08-30 Kinetic Special Vehicles Limit Anti-ballistic panel
FR2870332A1 (en) * 2004-05-17 2005-11-18 Rbe Sa COMPOSITE MATERIAL FOR SHIELDING
WO2005124267A1 (en) * 2004-05-17 2005-12-29 Vision Systems Aeronautics Shielding composite material
JP2008506950A (en) * 2004-07-16 2008-03-06 シミュラ インコーポレイテッド Method and system for detecting cracks in armor and broken parts
EP1769256A2 (en) * 2004-07-16 2007-04-04 Simula, Inc. Method and system for determining cracks and broken components in armor
WO2006019820A2 (en) 2004-07-16 2006-02-23 Simula, Inc. Method and system for determining cracks and broken components in armor
EP1769256A4 (en) * 2004-07-16 2011-02-23 Simula Inc Method and system for determining cracks and broken components in armor
AU2005275170B2 (en) * 2004-07-16 2012-04-05 Simula, Inc. Method and system for determining cracks and broken components in armor
GB2440213A (en) * 2006-07-19 2008-01-23 Barry Dawson Foam expelling armour arrangement
FR2914337A1 (en) * 2007-03-28 2008-10-03 Von Roll Isola France PANELS OF PARTITION BALLS.
WO2008135685A1 (en) * 2007-03-28 2008-11-13 Von Roll Isola France Bullet proof partition panels
EP2508336A1 (en) * 2011-04-04 2012-10-10 Industrial Neo Tex SA Fire-proof plate
WO2012136636A1 (en) * 2011-04-04 2012-10-11 Industrial Neo Tex, S.A. Fire-proof plate
GB2509921A (en) * 2013-01-17 2014-07-23 Jonathan Rusby Furniture panel comprising polymeric foam sandwich
GB2512180A (en) * 2013-01-17 2014-09-24 Top Edge Ltd Furniture panel

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