US20050262998A1 - Protective structure and protective system - Google Patents
Protective structure and protective system Download PDFInfo
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- US20050262998A1 US20050262998A1 US10/741,307 US74130703A US2005262998A1 US 20050262998 A1 US20050262998 A1 US 20050262998A1 US 74130703 A US74130703 A US 74130703A US 2005262998 A1 US2005262998 A1 US 2005262998A1
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- protective
- canceled
- mesh structure
- concrete
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- 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
- F41H5/0492—Layered armour containing hard elements, e.g. plates, spheres, rods, separated from each other, the elements being connected to a further flexible layer or being embedded in a plastics or an elastomer matrix
-
- 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
- F41H5/0421—Ceramic layers in combination with metal layers
Definitions
- This invention is directed to a protective structure and to a protective system for protecting buildings, streets, and other areas from explosions caused by an explosive device such as a bomb.
- the protective structure and protective system employ a membrane-like mesh structure made up of, for example, steel wire.
- the mesh structure surrounds a concrete fill material such as reinforced concrete.
- the protective structure deflects in response to and absorbs the energy associated with the blast load of an explosion, and the mesh structure prevents concrete fragments from injuring people or property in the vicinity of the explosion.
- the protective structure is sacrificial in nature: i.e. its sole purpose is to absorb the energy from the explosive shock wave and contain concrete debris caused by the explosion. Accordingly, this results in reduction in personal injury and property damage due to the explosion.
- the explosive force or pressure wave generated by an explosive device such as a car bomb may be sufficient (depending on the size of the explosive device used) to disintegrate a concrete wall, thereby causing shrapnel-like pieces of concrete to be launched in all directions, and causing additional personal injury and property damage.
- the Adler Blast WallTM is made up of front and back face plates which contain a reinforced concrete fill material. According to the developers of the Adler Blast WallTM, if an explosion occurs proximate to the front face plate, the back face plate will catch any concrete debris which results from the explosion. However, if the back face plate of the Adler Blast WallTM is sufficiently displaced in the horizontal or vertical direction due to the explosion, small pieces of concrete debris traveling at high velocities may escape, thereby causing personal injury or property damage. Accordingly, there is a need for a protective structure which further minimizes the possibility that such small pieces of concrete debris traveling at high velocities will escape the protective structure employed.
- the protective structure of this invention employs a membrane-like mesh structure made up of, for example, steel wire.
- the mesh structure is compressible in all three dimensions, and surrounds a concrete fill material such as reinforced concrete.
- the mesh structure advantageously prevents concrete fragments produced due to disintegration of the concrete fill material of the protective structure from injuring people or property in the vicinity of the explosion.
- the protective structure of this invention deflects in response to and absorbs the energy associated with the blast load of the explosion.
- the support members be capable of receiving the respective ends of the protective structures to provide an integrated wall structure.
- the support members may also employ a mesh structure made up of, for example, steel wire.
- the mesh structure may surround a concrete fill material such as reinforced concrete.
- the mesh structure prevents concrete fragments produced due to disintegration of the concrete fill material of the support members from injuring people or property in the vicinity of the explosion.
- FIG. 1 depicts a cross-sectional view of a prior art reinforced concrete wall protective structure.
- FIG. 2 depicts a cross-sectional view of one embodiment of the protective structure of this invention.
- FIG. 2A depicts a cross-sectional expanded view of a portion of the protective structure of this invention depicted in FIG. 2 .
- FIG. 3 depicts a front view of one embodiment of the protective system of this invention.
- FIG. 4 depicts a cross-sectional view of the deflection of one embodiment of the protective structure of this invention in response to a blast load.
- FIG. 1 there is depicted a cross-sectional view of a prior art reinforced concrete wall protective structure.
- concrete wall 102 contains both vertically placed steel reinforcement bars 104 and horizontally placed steel reinforcement bars 106 . If an explosion occurred in the vicinity of the front face 108 of concrete wall 102 , the concrete material would disintegrate, and small pieces of concrete debris traveling at high velocities would be produced, thus increasing the possibilities of personal injury and property damage due to such concrete debris.
- FIG. 2 depicts a cross-sectional view of one embodiment of the protective structure of this invention.
- concrete wall 202 contains membrane-like mesh structure 203 made up of steel wires 205 , as well as vertically placed steel reinforcement bars 204 (connected by steel tie members 201 ) and horizontally placed steel reinforcement bars 206 .
- Mesh structure 203 defines an annular region which contains concrete fill material 207 .
- concrete fill material 207 may and preferably does protrude through mesh structure 203 on all sides to provide concrete face material 210 .
- one or more additional mesh structures may be attached or superimposed upon mesh structure 203 , thereby adding additional unit cell thickness and providing additional containment for small pieces of concrete debris generated by disintegration of concrete wall 202 after an explosion.
- FIG. 2A depicts a cross-sectional expanded view of a portion of the protective structure of this invention depicted in FIG. 2 .
- concrete wall 202 contains mesh structure 203 made up of steel wires 205 which define mesh structure unit cells 211 , as well as vertically placed steel reinforcement bars 204 (connected by steel tie members 201 ) and horizontally placed steel reinforcement bars 206 .
- Mesh structure 203 defines an annular region which contains concrete fill material 207 .
- the wire mesh which may be employed in the mesh structure is preferably made up of interconnected steel wires. Such steel wires will be selected based upon the assumed maximum blast load, the length of the protective structure, the grade strength of the steel employed in the mesh, and other factors.
- the mesh structure preferably comprises a plurality of mesh unit cells having a width in the range of about 0.75 to 1.75 inches and a length in the range of about 0.75 to 1.75 inches, although the opening size of the mesh structure may be optimally designed depending upon the properties of the concrete fill material.
- wire mesh may be employed on or just beneath the front and rear surfaces of structural elements to mitigate “scabbing” (i.e. cratering of the front face due to the blast load) and “spalling” (i.e. separation of particles of structural element from the rear face at appropriate particle velocities) for light to moderate blast loads.
- scabbing i.e. cratering of the front face due to the blast load
- spalling i.e. separation of particles of structural element from the rear face at appropriate particle velocities
- the wire mesh structure both prevents spalling at all blast loads (including high blast loads which generate a pressure wave in excess of tens of thousands of psi)), and also enables the protective structure to deflect both elastically and inelastically in response to the blast load, as further discussed herein with respect to FIG. 4 , such that the energy of the blast load is fully absorbed by the protective structure via large deflections of the protective structure. Due to such large deflections, the wire mesh structure is deformed permanently without any “rebound” back towards its initial position prior to the explosion.
- FIG. 3 depicts a front view of one embodiment of the protective system of this invention.
- the protective system 301 includes several protective structures of this invention 302 , 312 , and 322 which are interconnected via the use of support members 315 and 325 .
- the support members 315 and 325 typically will have a length sufficient to enable the support members to be embedded in the ground for a significant portion of their total length, as shown for example, by support member portions 315 a and 325 a which are embedded in the ground 330 in FIG. 3 .
- the embedded depth for the support member portions 315 a and 325 a in the ground will be determined according to the subsurface soil conditions, as will be recognized by those skilled in the art.
- the embedded length of the support member portions in the soil will be a minimum of about one-third of the total length of each support member.
- the support members comprise a mesh structure.
- the mesh structure of the support members may preferably comprise a plurality of interconnected steel wires. Such steel wires will be selected based upon the assumed maximum blast load, the length of the protective structure, the grade strength of the steel employed in the mesh, and other factors. For example, steel wires having a thickness of 8 gage, 10 gage, 12 gage, or 16 gage may be employed.
- the mesh structure if employed, preferably comprises a plurality of mesh unit cells having a width in the range of about 0.75 to 1.75 inches, and a length in the range of about 0.75 to 1.75 inches, although the opending size of the mesh structure may be optimally designed depending upon the properties of the concrete fill material.
- the mesh structure if employed, preferably surrounds a concrete fill material such as reinforced concrete. The concrete fill material preferably protrudes through the mesh structure on all sides to provide a concrete face material for the support member.
- FIG. 4 depicts a cross-sectional view of the deflection of one embodiment of the protective structure of this invention in response to a blast load.
- a protective structure of this invention 412 is interconnected to support members 415 and 425 .
- Protective structure 412 has a length L as shown.
- the wire mesh (not shown in FIG. 4 ) will deflect in response to the blast load, thereby causing both front face 408 and rear face 409 of protective structure 412 to deflect a distance D (shown in dashed lines).
- deflection of the protective structure i.e. the D/L ratio
- the protective structure may be as large as about 25%, say 10-25%.
- the deflection of the protective structure of this invention in response to a blast load may be analogized or modeled as wires in tension.
- the steel wires of the mesh structure absorb the energy of the blast load.
- ⁇ A is the sum of the area of the wires per 1 foot-width of mesh structure
- R u is the ultimate load capacity of the wire mesh per foot
- F y is the yield stress of the wire
- L m is the span of the wire mesh structure
- the time period T is a critical design parameter which may be designed for in the protective structure of this invention.
- the time duration of the blast load (t d ) will be in the order of a few milliseconds, say 5-10 milliseconds.
- the mesh structure employed in the protective structure of this invention will be designed such that it will have a time period T much greater than t d ; typically T is of the order of 5-20 times greater in duration than t d .
Abstract
Description
- 1. Field of the Invention
- This invention is directed to a protective structure and to a protective system for protecting buildings, streets, and other areas from explosions caused by an explosive device such as a bomb. More particularly, the protective structure and protective system employ a membrane-like mesh structure made up of, for example, steel wire. The mesh structure surrounds a concrete fill material such as reinforced concrete. The protective structure deflects in response to and absorbs the energy associated with the blast load of an explosion, and the mesh structure prevents concrete fragments from injuring people or property in the vicinity of the explosion. The protective structure is sacrificial in nature: i.e. its sole purpose is to absorb the energy from the explosive shock wave and contain concrete debris caused by the explosion. Accordingly, this results in reduction in personal injury and property damage due to the explosion.
- 2. Background Information
- Protection of people, buildings, bridges etc. from attacks by car or truck bombs, remote controlled explosives, etc. is of increasing importance and necessity. The explosive force or pressure wave generated by an explosive device such as a car bomb may be sufficient (depending on the size of the explosive device used) to disintegrate a concrete wall, thereby causing shrapnel-like pieces of concrete to be launched in all directions, and causing additional personal injury and property damage.
- Conventional reinforced concrete structures such as reinforced concrete walls are well known to those skilled in the art. Such conventional structures typically employ steel reinforcement bars embedded within the concrete structure or wall. However, in the case of an explosion or blast load which may generate a pressure wave in excess of tens of thousands of psi, a conventional reinforced concrete structure will be ineffective in providing sufficient protection, and the blast load will cause disintegration of the concrete, thereby causing shrapnel-like pieces of concrete to be launched in all directions, and causing additional personal injury and property damage.
- One example of a proposed solution for this problem is the Adler Blast Wall™ which is described, for example, at www.rsaprotectivetechnologies.com. The Adler Blast Wall™ is made up of front and back face plates which contain a reinforced concrete fill material. According to the developers of the Adler Blast Wall™, if an explosion occurs proximate to the front face plate, the back face plate will catch any concrete debris which results from the explosion. However, if the back face plate of the Adler Blast Wall™ is sufficiently displaced in the horizontal or vertical direction due to the explosion, small pieces of concrete debris traveling at high velocities may escape, thereby causing personal injury or property damage. Accordingly, there is a need for a protective structure which further minimizes the possibility that such small pieces of concrete debris traveling at high velocities will escape the protective structure employed.
- It is a first object of this invention to provide a protective structure which minimizes the possibility that small pieces of concrete debris traveling at high velocities will escape the protective structure in the event of an explosion or blast load proximate to the structure.
- It is one feature of the protective structure of this invention that it employs a membrane-like mesh structure made up of, for example, steel wire. The mesh structure is compressible in all three dimensions, and surrounds a concrete fill material such as reinforced concrete. In the event of an explosion proximate to the protective structure of this invention, the mesh structure advantageously prevents concrete fragments produced due to disintegration of the concrete fill material of the protective structure from injuring people or property in the vicinity of the explosion.
- It is another feature of the protective structure of this invention that, in the event of an explosion proximate to the protective structure of this invention, the protective structure deflects in response to and absorbs the energy associated with the blast load of the explosion.
- It is a second object of this invention to provide a protective system which employs a number of the above described protective structures which are joined together via a number of support members, thereby providing a protective wall of sufficient length to provide more complete protection of a given area as well as additional ease of construction and use.
- It is a feature of the protective system of the invention that the support members be capable of receiving the respective ends of the protective structures to provide an integrated wall structure.
- It is another feature of the protective system of the invention that the support members may also employ a mesh structure made up of, for example, steel wire. The mesh structure may surround a concrete fill material such as reinforced concrete. Thus, in the event of an explosion proximate to the protective system of this invention, the mesh structure prevents concrete fragments produced due to disintegration of the concrete fill material of the support members from injuring people or property in the vicinity of the explosion.
- Other objects, features and advantages of the protective structure and protective system of this invention will be apparent to those skilled in the art in view of the detailed description of the invention set forth herein.
- A protective structure such as a protective wall for protecting buildings, bridges, roads and other areas from explosive devices such as car bombs and the like comprises:
-
- (a) a mesh structure having an outer surface and an inner surface, wherein the inner surface defines an annular space;
- (b) a concrete fill material which resides within the annular space of the mesh structure and within the mesh structure;
- (c) at least one reinforcement member which resides within the concrete fill material; and
- (d) a concrete face material which resides upon the outer surface of the mesh structure.
- A protective system such as a protective wall for protecting buildings, bridges, roads and other areas from explosive devices such as car bombs and the like comprises:
-
- (I) a plurality of adjacent protective structures, wherein each protective structure has a first end and a second end, and each protective structure comprises:
- (a) a mesh structure having an outer surface and an inner surface, wherein the inner surface defines an annular space,
- (b) a concrete fill material which resides within the annular space of the mesh structure and within the mesh structure,
- (c) at least one reinforcement member which resides within the concrete fill material, and
- (d) a concrete face material which resides upon the outer surface of the mesh structure; and
- (II) a plurality of support members, wherein the support members receive the first or second ends of the protective structures to provide interlocking engagement of the protective structures to the support members.
- (I) a plurality of adjacent protective structures, wherein each protective structure has a first end and a second end, and each protective structure comprises:
-
FIG. 1 depicts a cross-sectional view of a prior art reinforced concrete wall protective structure. -
FIG. 2 depicts a cross-sectional view of one embodiment of the protective structure of this invention. -
FIG. 2A depicts a cross-sectional expanded view of a portion of the protective structure of this invention depicted inFIG. 2 . -
FIG. 3 depicts a front view of one embodiment of the protective system of this invention. -
FIG. 4 depicts a cross-sectional view of the deflection of one embodiment of the protective structure of this invention in response to a blast load. - This invention will be further understood in view of the following detailed description. Referring now to
FIG. 1 , there is depicted a cross-sectional view of a prior art reinforced concrete wall protective structure. As shown inFIG. 1 ,concrete wall 102 contains both vertically placedsteel reinforcement bars 104 and horizontally placedsteel reinforcement bars 106. If an explosion occurred in the vicinity of thefront face 108 ofconcrete wall 102, the concrete material would disintegrate, and small pieces of concrete debris traveling at high velocities would be produced, thus increasing the possibilities of personal injury and property damage due to such concrete debris. -
FIG. 2 depicts a cross-sectional view of one embodiment of the protective structure of this invention. As shown inFIG. 2 ,concrete wall 202 contains membrane-like mesh structure 203 made up ofsteel wires 205, as well as vertically placed steel reinforcement bars 204 (connected by steel tie members 201) and horizontally placedsteel reinforcement bars 206.Mesh structure 203 defines an annular region which containsconcrete fill material 207. Although shown only with respect to therear face 209 ofconcrete wall 202,concrete fill material 207 may and preferably does protrude throughmesh structure 203 on all sides to provideconcrete face material 210. If an explosion occurred in the vicinity of thefront face 208 ofconcrete wall 202, the concrete material would disintegrate, but small pieces of concrete debris traveling at high velocities would be “caught” and contained within themesh structure 203, thus decreasing the possibilities of personal injury and property damage due to such concrete debris. If desired, one or more additional mesh structures (not shown) may be attached or superimposed uponmesh structure 203, thereby adding additional unit cell thickness and providing additional containment for small pieces of concrete debris generated by disintegration ofconcrete wall 202 after an explosion. -
FIG. 2A depicts a cross-sectional expanded view of a portion of the protective structure of this invention depicted inFIG. 2 . As shown inFIG. 2A ,concrete wall 202 containsmesh structure 203 made up ofsteel wires 205 which define meshstructure unit cells 211, as well as vertically placed steel reinforcement bars 204 (connected by steel tie members 201) and horizontally placed steel reinforcement bars 206.Mesh structure 203 defines an annular region which containsconcrete fill material 207. The wire mesh which may be employed in the mesh structure is preferably made up of interconnected steel wires. Such steel wires will be selected based upon the assumed maximum blast load, the length of the protective structure, the grade strength of the steel employed in the mesh, and other factors. For example, steel wires having a thickness of 8 gage, 10 gage, 12 gage, or 16 gage may be employed. The mesh structure preferably comprises a plurality of mesh unit cells having a width in the range of about 0.75 to 1.75 inches and a length in the range of about 0.75 to 1.75 inches, although the opening size of the mesh structure may be optimally designed depending upon the properties of the concrete fill material. - It has previously been suggested, for example, in Conrath et al., Structural Design for Physical Security, p. 4-46 (American Society of Civil Engineers-Structural Engineering Institute 1999) (ISBN 0-7844-0457-7), that wire mesh may be employed on or just beneath the front and rear surfaces of structural elements to mitigate “scabbing” (i.e. cratering of the front face due to the blast load) and “spalling” (i.e. separation of particles of structural element from the rear face at appropriate particle velocities) for light to moderate blast loads. However, in the protective structure of the present invention, the wire mesh structure employed does not merely mitigate scabbing and spalling for light to moderate blast loads. Instead, the wire mesh structure both prevents spalling at all blast loads (including high blast loads which generate a pressure wave in excess of tens of thousands of psi)), and also enables the protective structure to deflect both elastically and inelastically in response to the blast load, as further discussed herein with respect to
FIG. 4 , such that the energy of the blast load is fully absorbed by the protective structure via large deflections of the protective structure. Due to such large deflections, the wire mesh structure is deformed permanently without any “rebound” back towards its initial position prior to the explosion. -
FIG. 3 depicts a front view of one embodiment of the protective system of this invention. As shown inFIG. 3 , theprotective system 301 includes several protective structures of thisinvention support members support members support member portions 315 a and 325 a which are embedded in theground 330 inFIG. 3 . - The embedded depth for the
support member portions 315 a and 325 a in the ground will be determined according to the subsurface soil conditions, as will be recognized by those skilled in the art. For example, in one preferred embodiment, the embedded length of the support member portions in the soil will be a minimum of about one-third of the total length of each support member. - In another preferred embodiment, the support members comprise a mesh structure. The mesh structure of the support members may preferably comprise a plurality of interconnected steel wires. Such steel wires will be selected based upon the assumed maximum blast load, the length of the protective structure, the grade strength of the steel employed in the mesh, and other factors. For example, steel wires having a thickness of 8 gage, 10 gage, 12 gage, or 16 gage may be employed. The mesh structure, if employed, preferably comprises a plurality of mesh unit cells having a width in the range of about 0.75 to 1.75 inches, and a length in the range of about 0.75 to 1.75 inches, although the opending size of the mesh structure may be optimally designed depending upon the properties of the concrete fill material. The mesh structure, if employed, preferably surrounds a concrete fill material such as reinforced concrete. The concrete fill material preferably protrudes through the mesh structure on all sides to provide a concrete face material for the support member.
-
FIG. 4 depicts a cross-sectional view of the deflection of one embodiment of the protective structure of this invention in response to a blast load. As shown inFIG. 4 , a protective structure of thisinvention 412 is interconnected to supportmembers Protective structure 412 has a length L as shown. Upon explosion of an explosive device proximate to thefront face 408 ofprotective structure 412, the wire mesh (not shown inFIG. 4 ) will deflect in response to the blast load, thereby causing bothfront face 408 andrear face 409 ofprotective structure 412 to deflect a distance D (shown in dashed lines). For the protective structure of this invention, which is designed to undergo large deflections to absorb the energy from the explosion, deflection of the protective structure (i.e. the D/L ratio) may be as large as about 25%, say 10-25%. - While not wishing to be limited to any one theory, it is theorized that the deflection of the protective structure of this invention in response to a blast load may be analogized or modeled as wires in tension. Upon explosion of the explosive device and delivery of the blast load to the protective structure, the steel wires of the mesh structure absorb the energy of the blast load. Employing this model, the membrane stiffness of the mesh wire (K) is defined as:
K=P e /D e
where Pe is the load corresponding to the elastic limit of the wire mesh structure and De is the deflection corresponding to Pe, and the time period of oscillation of the wire mesh structure (T) (in milliseconds) is defined as:
T=1000/ω
where ω is the frequency of oscillation in cycles per second (cps), which is defined as
ω=(½Π)(K/m)1/2
where m is the mass per foot-width of the mesh structure. - Using the above equations, various design parameters such as the wire gage, size of the mesh unit cell opening, steel grade, etc. may be selected for various blast loads, as set forth in Table 1 below:
TABLE 1 Wire Wire m T Wire Diameter Area (A) ΣA Ru Pe De K (lb-s2/ ω (milli- Gage # (in.) (in.2) (in2) (k) (k) (in.) (#/in) in.) (cps) seconds) Fy = 36 ksi 16 0.062 0.003 0.290 10.44 1.09 3.77 289 0.0308 15 66 Lm = 72 in. 12 0.106 0.0088 0.847 30.48 3.18 3.77 893 0.0899 15 66 10 0.135 0.014 1.373 49.44 5.16 3.77 1,368 0.1458 15 66 Fy = 50 ksi 16 0.062 0.003 0.290 14.50 1.707 4.15 411 0.0308 18.4 54 Lm = 72 in. 12 0.106 0.0088 0.847 42.35 4.985 4.15 1201 0.0899 18.4 54 10 0.135 0.014 1.373 68.65 8.082 4.15 1947 0.1458 18.4 54
where:
ΣA is the sum of the area of the wires per 1 foot-width of mesh structure
Ru is the ultimate load capacity of the wire mesh per foot
Fy is the yield stress of the wire
Lm is the span of the wire mesh structure
- As set forth in Table 1, the time period T is a critical design parameter which may be designed for in the protective structure of this invention. For a given explosion or blast load, it is expected that the time duration of the blast load (td) will be in the order of a few milliseconds, say 5-10 milliseconds. The mesh structure employed in the protective structure of this invention will be designed such that it will have a time period T much greater than td; typically T is of the order of 5-20 times greater in duration than td.
- It should be understood that various changes and modifications to the preferred embodiments herein will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of this invention and without diminishing its attendant advantages. It is therefore intended that such changes and modifications be covered by the appended claims.
Claims (54)
Priority Applications (7)
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US10/741,307 US6973864B1 (en) | 2003-12-19 | 2003-12-19 | Protective structure and protective system |
CA002544060A CA2544060C (en) | 2003-12-19 | 2004-12-16 | Protective structure and protective system |
EP04822175A EP1695019B1 (en) | 2003-12-19 | 2004-12-16 | Protective structure and protective system |
AT04822175T ATE537422T1 (en) | 2003-12-19 | 2004-12-16 | PROTECTIVE STRUCTURE AND PROTECTION SYSTEM |
PCT/US2004/042414 WO2005119164A1 (en) | 2003-12-19 | 2004-12-16 | Protective structure and protective system |
US11/291,656 US7562613B2 (en) | 2003-12-19 | 2005-11-30 | Protective structure and protective system |
US12/459,827 US7677151B2 (en) | 2003-12-19 | 2009-07-07 | Protective structure and protective system |
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US10/741,307 US6973864B1 (en) | 2003-12-19 | 2003-12-19 | Protective structure and protective system |
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US8464479B2 (en) * | 2003-08-27 | 2013-06-18 | Sameh Guirgis | Structural system with high absorption capacity to impactive and impulsive loads |
US20100294124A1 (en) * | 2006-12-22 | 2010-11-25 | Nederlandse Organisatie Voor Toegepast Natuurwetenschappelijk Onderzoek Trio | Method and device for protecting objects against rocket propelled grenades (rpgs) |
US8857309B2 (en) | 2006-12-22 | 2014-10-14 | Cyril Maurice Wentzel | Method and device for protecting objects against rocket propelled grenades (RPGs) |
US20080164379A1 (en) * | 2007-01-10 | 2008-07-10 | Stephan Beat Wartmann | Device for Defense from Projectiles, Particularly Shaped Charge Projectiles |
US7975594B2 (en) * | 2007-01-10 | 2011-07-12 | Fatzer Ag | Device for defense from projectiles, particularly shaped charge projectiles |
US20110072960A1 (en) * | 2007-11-16 | 2011-03-31 | Composite Technologies | Armor shielding |
US7926407B1 (en) * | 2007-11-16 | 2011-04-19 | Gerald Hallissy | Armor shielding |
US20140230639A1 (en) * | 2011-07-06 | 2014-08-21 | Ajou Universtiy Industry-Academic Cooperation Foundation | Defense structure for national defense |
US9115960B2 (en) * | 2011-07-06 | 2015-08-25 | Ajou University Industry-Academic Cooperation Foundation | Defense structure for national defense |
US11733006B2 (en) * | 2019-03-25 | 2023-08-22 | United States Of America As Represented By The Secretary Of The Army | Internally partitioned revetment container configured for rapid attainment of defense against small arms fire |
Also Published As
Publication number | Publication date |
---|---|
CA2544060C (en) | 2008-12-02 |
EP1695019B1 (en) | 2011-12-14 |
EP1695019A1 (en) | 2006-08-30 |
CA2544060A1 (en) | 2005-12-15 |
WO2005119164A1 (en) | 2005-12-15 |
ATE537422T1 (en) | 2011-12-15 |
EP1695019A4 (en) | 2010-10-27 |
US6973864B1 (en) | 2005-12-13 |
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