WO2016154014A1 - Ballistic barrier partition system and retrofit kit - Google Patents

Ballistic barrier partition system and retrofit kit

Info

Publication number
WO2016154014A1
WO2016154014A1 PCT/US2016/023167 US2016023167W WO2016154014A1 WO 2016154014 A1 WO2016154014 A1 WO 2016154014A1 US 2016023167 W US2016023167 W US 2016023167W WO 2016154014 A1 WO2016154014 A1 WO 2016154014A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
ballistic barrier
barrier panel
partition
keyhole
plurality
Prior art date
Application number
PCT/US2016/023167
Other languages
French (fr)
Inventor
Cory Smith
Original Assignee
Balllistic Furniture Systems, Inc.
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

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74Removable non-load-bearing partitions; Partitions with a free upper edge modular coordination
    • E04B2/7407Removable non-load-bearing partitions; Partitions with a free upper edge modular coordination assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7416Removable non-load-bearing partitions; Partitions with a free upper edge modular coordination assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with free upper edge, e.g. for use as office space dividers
    • E04B2/7422Removable non-load-bearing partitions; Partitions with a free upper edge modular coordination assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with free upper edge, e.g. for use as office space dividers with separate framed panels without intermediary support posts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00Armour; Armour plates
    • F41H5/013Mounting or securing armour plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00Armour; Armour plates
    • F41H5/24Armour; Armour plates for stationary use, e.g. fortifications Shelters, Guard Booths
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74Removable non-load-bearing partitions; Partitions with a free upper edge modular coordination
    • E04B2002/7461Details of connection of sheet panels to frame or posts
    • E04B2002/7466Details of connection of sheet panels to frame or posts using hooks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00Armour; Armour plates
    • F41H5/02Plate construction
    • F41H5/04Plate construction composed of more than one layer

Abstract

A ballistic barrier partition system. The system has a substantially rectangular frame in which two parallel opposing sides, a top side and a bottom side defining an opening. Two keyhole brackets are attached to an interior of of the partition frame on each of the opposing sides. The keyhole brackets have a plurality of keyhole-shaped openings spaced at along the length of the keyhole brackets. The system also includes a substantially rigid ballistic barrier panel, substantially the same size as the opening and having embedded in a plurality of fasteners aligned with and received by the keyhole-shaped openings.

Description

BALLISTIC BARRIER PARTITION SYSTEM AND RETROFIT KIT

TECHNICAL FIELD

The present invention relates to modular panel systems in general and more specifically to equipping office and partition systems with a laminated ballistic barrier.

BACKGROUND ART

Commercial modular panel (e.g., partition) systems are plentiful in many public and commercial spaces, such as office buildings, courthouses, call centers, banks, military recruiting centers and administrative offices of hospitals, schools and many other businesses. In the event of gunfire in public or commercial spaces, the natural instinct of those trapped by the gunfire is to hide behind any available structure, including partition or modular panel systems.

DISCLOSURE OF INVENTION

According to embodiments described herein, ballistic barrier partition system, includes a substantially rectangular frame, with two parallel opposing sides, a top side and a bottom side, the substantially rectangular frame defining an opening. Two keyhole brackets are attached to an interior of of the partition frame on each of the opposing sides of the partition frame; the keyhole brackets have a plurality of keyhole-shaped openings spaced at along the length of the keyhole brackets. A substantially rigid ballistic barrier panel of substantially the same size as the opening includes a plurality of embedded fasteners aligned with and receiv ed by the keyhole-shaped openings

BRIEF DESCRIPTION OF THE DRAWINGS

Illustrative and presently preferred embodiments of the invention are shown in the accompanying drawing(s) in which :

FIG. 1 is an exploded view of the retrofit of a frame and tile system with ballistic barrier panels according to an embodiment of present invention;

FIG. 2 shows multiple views of a top bracket for attaching balli stic barrier panel s onto a frame and tile modular panel system;

FIG. 3 shows multiple views of a bottom right bracket for attaching ballistic barrier panels onto a frame and tile system modular panel system ;

FIG. 4 shows multiple views of a bottom left bracket for attaching ballistic barrier panels onto a frame and tile modular panel system; FIG. 5 shows components of a retrofit kit of embodiments of the present invention;

FIG. 6 shows openings in the bracket for receiving retrofit clips of an embodiment of the retrofit kit of the present invention;

FIG. 7 illustrates a method of retrofitting a partition system according to an embodiment of the present invention;

FIG . 8 shows views of a front and back of ballistic barrier panel installed in a partition system of the present invention;

FIG. 9 shows cutaway views of the ballistic barrier partition system from the back side of the ballistic barrier panel;

FIG . 10 shows the mounting system of and embodiment of the ballistic barrier partition system;

FIG. 1 1 shows seam protection between adjacent ballistic barrier panels; and

FIG. 1 2 illustrates a method of retrofitting a partition system according to an embodiment of the present invention.

BEST MODE(S) FOR CARRYING OUT THE INVENTION

Mass shootings are on the rise in the U.S. and around the world. Instead of running for an exit, the immediate reaction of those trapped by gunfire i s to drop to the floor and hide behind any structure, including the modular panel or partition system comprising their workspace. However, existing office systems (e.g., frame and tile systems and other modular panel systems) provide no meaningful protection from gunfire. Embodiments of balli stic barrier partition system 10 of the present invention provide meaningful ballistic barrier protection for partition and office systems found in public and commercial spaces by stopping bullets fired from firearms (e.g. , pistols, handguns, rifles, shotguns, etc. ) and impeding the forward progress of projectiles fired from higher velocity weapons.

The present invention is directed to a system and method for retrofitting partition systems to make ballistic barrier partition systems 10, 100. As used herein, the term "partition system" includes any office, furniture or room partition system, such as a frame-and-tile modular panel system, other modular panel systems, and moveable walls, examples of which are widely commercially available; the panels or "walls" of the partition system may range in height and may extend from floor to ceiling or anywhere in between. However, when retrofit kit 1 1 , 1 1 1 of the present invention is used to produce ballistic barrier partition system 10, 100 then ballistic barrier partition system 10, 100 can support balli stic barrier panels 12 and withstand repetitive bullet impacts from either direction. In the event of unexpected gunfire in a location equipped with ballistic barrier partition systems 10, 100 of the present inv ention, those being fired upon may position themselves behind any side of ballistic barrier partition system 10, 100 to be shielded from the impact of bullets fired from weapons, including handguns, shotguns and t itles. Should an assailant shoot at a person taking shelter behind ballistic barrier partition system 10, 100 of the present inv ention, a projectile fired from a weapon would pass through an outer layer of ballistic barrier panel 12, 1 12 which would become lodged in bal listic barrier panel 1 2, I 12. In the case of very high velocity weapons, the balli stic barrier panel 12, 1 12 would act to dissipate the force of the projectile, as is explained in greater detail below.

Embodiments of ballistic barrier partition system 10 and retrofit kit 1 1 will now be described in greater detail with reference to FIGs. 1-6. As shown in FIGs. 2-6 retrofit kit 1 1 comprises balli stic barrier panel 12, as well as a variety of retrofit clips 20, as well as suitable fasteners (e.g., rivets 38) for securing retrofit clips 20 to balli tic barrier panel 1 2. Ballistic barrier panel 1 2 comprises multiple ply sheets of bal listic barrier material that are laminated and consolidated. In embodiments of the present inv ention, ballistic barrier panel 12 comprises para-aramid synthetic fiber (e.g. , poly paraphenylene terephthalamide) sold commercially under the trademark Kev lar " from DuPont. Other similar materials, such as Twaron* commercially av ailable from Teijin Aramid, may also be used, as may be sheets made from S2 glass fiberglass or ultra-high molecular weight polyethylene, both of which are also commercially av ailable. In still other embodiments, extruded -type ballistic barrier material forming a single layer may al so be used; therefore, while embodiments herein are described with reference to ballistic barrier panel 12, the inv ention should not be viewed as being limited in that respect. Combinations of these materials, including cementitious materials, may also be used. In an embodiment, use of poly paraphenylene terephthalamide may be adv antageous because it is lighter in weight than other materials mentioned. In embodiments described herein, approximately nine to twelv e sheets of ballistic material were laminated and consolidated into rigid panels, approximately 5.23 millimeters (mm ) (0.206 inches (in)) to about 9.52 mm (0.375 in ) in thickness or until the desired lev el of ballistic protection is achieved. As is explained in more detail below, ballisti barrier panel 12 of certain shapes and sizes was tested repeatedly for its ability to withstand gunfire, although the invention should not be viewed as being limited to number or size of sheets of ballistic barrier material . For example, as would be familiar to one of ordinary skill in the art after becoming familiar with the teachings of the present invention, additional sheets or plies of ballistic barrier material may be used to afford greater protection, such as that desired to withstand gunfire from shotguns and rifles. Ballistic barrier panel 12 may also be coated with other various types of materials, such as cementitious materials.

As can be best seen in FIG. 1, ballistic barrier panel 12 may be cut and sized to fit within opening 17. The substantially rigid ballistic barrier panels 12 may be cut to a desired size or shape using a commercial cutting system, such as a diamond blade circular saw, computer numerical control (CNC) machine or wet-jet cutting system. In another embodiment, ballistic barrier panel 12 may be formed or molded to the desired size and shape without cutting. In one embodiment, bal listic barrier panel 12 is sized to be substantially the same size as tiles 16, 16' to fit snuggly within opening 17. In another embodiment, ballistic barrier panel 12 may be covered with cementitious or other types of material that may be molded or spray applied. In yet another embodiment, ballistic barrier panel 12 may be cut and sized to replace tile 16, 16' all together. Once sized, ballistic barrier panel 12, 1 12 may then be inserted into embodiments of ballistic barrier partition system 10, 100 in accordance with embodiments of method 200, 300.

The manner in which tiles 1 6, 16' are attached to frame 14 using plastic and thin metal clips (in the original equipment manufacturer (OEM) partition system ) does not permit installation of balli stic barrier panel 12 due to its weight or force when under gunfire. Therefore, retrofit clips 20 of the present invention are required to secure ballistic barrier panel 12 within frame 1 14. As shown in FIGs. 2-4 and 5, retrofit clips 20 comprise top clip 22, bottom right clip 24 and bottom left clip 26. In one embodiment, as best seen in FIG. 2, top clip 22 comprises an inverted J-shaped hook 23 attached to short-side 19 of an elongate, general 1 y-rectangul ar body 2 1 so that end 27 is substantially parallel to and extends down over body 2 1 . As shown, the width of hook 23 is approximately one quarter of the width of the short side 19, but may be up to about half of the length, so long as it is sized to fit securely within top opening 40 of bracket 36. Hook 23 is substantially centered on side 19. With reference to FIG. 3, bottom right clip 24 comprises an L- shaped hook 25 attached to side 19 of body 2 1 so that end 27 is substantial ly paral lel to and extends out and away from body 2 1 . As shown in FIG. 3, hook 25 is attached to the far right of side 19 substantially flush with long side 2 of body 21. As shown, the width of hook 25 is approximately one quarter of the width of the short side 19, but may be up to about half of the width of side 19, so long as it is sized to fit securely within bottom opening 42 of bracket 36. With reference to FIG. 4, bottom left clip 26 comprises an L -shaped hook 25 attached to side 19 of body 21 so that end 27 is substantially parallel to and extends out and away from body 2 1 . As shown in FIG. 4, hook 25 is attached to the far left of side 19 substantially flush with long side 29' of body 21. As shown, the width of hook 25 is approximately one quarter of the width of the short side 19, but may be up to about half of the width of side 19, so long as it is sized to fit securely within bottom opening 42 of bracket 36. In embodiments shown herein, retrofit clips 20 were fashioned as an integral component from a single piece of metal so that hook 23, 25 is integral with body 21. However, in other embodiments hooks 23, 25 and body 21 may be individual components attached together using means familiar to one of ordinary skill in the art. Clips 20 are fashioned from I 1 -gauge mild steel, although other metals and gauges, as well as other suitable materials could be used as would be familiar to one of ordinary skill in the art after becoming familiar with the teachings of the present invention.

In one embodiment, ballistic barrier partition system 10 comprises retrofit kit 1 1, as well as components for the frame-and-tile partition system, including tiles 16, 16' which are mounted on frame 14 as shown in FIG. 1. In one embodiment, tiles 16, 16' comprise sheet metal shell including tile frame 36 wrapped in fabric, in another embodiment, tiles 16, 16' comprise sheet metal without a wrapping. Materials other than fabric could also be used for the wrapping. In other embodiments, materials other than metal can be used to fonn the internal structure of tiles 16, 16'. In still other embodiments, acoustic tiles could be used. In embodiments in which ballistic barrier panel 12 is used alone without tile 16, 16', ballistic barrier panel 12 may be wrapped in fabric or other suitable wrapping material . Center brace 34, both ends of which are secured to frame 14, is used to support large sections of frame 14. Base 30 is attached to frame 14 at its base and can be used to house electrical components and wires to outfit the ballistic barrier partition system 10 with electricity, phone, and data systems. In addition, in embodiments base 30 may be used to add a counterweight or otherwise secure ballistic barrier partition system 10 to the floor. Sides of the ballistic barrier partition system 10 are covered with side plates 32 after the ballistic barrier panel 12 has been secured to tile 16, 16' using brackets 20 in the manner described below. In another embodiment, ballistic barrier partition system 10 may also include a counterweight system. Advantageously, clips 20 are designed and sized to fit within openings 40, 42 of existing tile frame bracket 36 so clips 20 can be located in the same locations as the OEM clips, w ith no alterations to the frame 14 or tile 16, 16'. As explained in more detail below, this facilitates a simple installation as well as ensures the brackets 36 are placed properly. Once retrofit kit 1 1 is installed to produce ballistic barrier partition system 10, there is no visible difference with the OEM partition system.

With reference to FIG. 7, according to an embodiment of method 200 of the present invention, the OEM partition system may be retrofitted as follows: At step 202, tile 16, 16' would be popped off or removed from frame 14. I one embodiment, tile 16, 16' may be pulled off frame 14 without any tools. Existing OEM clips would be removed next at step 204. At step 206, ballistic barrier panel 12 is then flexed or fitted into the interior 1 8 of tile 16' as shown in FIG. 1 (see, arrows 28) so it fits within existing tile frame bracket 36. In the embodiment shown, tile frame bracket 36 compri ses top opening 40 and bottom opening 42. However, in another embodiment separate brackets could be installed on at least opposite sides of the the tile frame. As shown in FIG. 6, retrofit clips 20 would be attached (e.g., riveted ) to the sheet metal of tile 16' in substantially the same location as occupied by the OEM clips that were removed w ithin openings 40, 42 to form a retrofitted tile at step 208. More specifically, top clip 22 is inserted into opening 40 of tile frame bracket 36 and riveted to the sheet metal through body 21 so that hook 23 extends out and down from tile 16" . Right bottom clip 24 and left bottom clip 26 are each inserted into separate openings 42 and riveted to the sheet metal through body 2 1 so that hook 25 extends out and down from tile 16' . Advantageously, this attachment system allows the new retrofit clips 20 to engage frame 14 without any modification to frame 14 itself. Then, tile 16' would then be installed back onto the frame 14 using retrofit clips 20 at step 2 12 to produce the retrofitted ballistic barrier partition system 10 according to an embodiment of the present invention. Similarly, in an embodiment in which balli stic barrier panel 12 is used without tiles 16, 16', clips 20 and brackets 36 would be attached directly to ballistic barrier panel 12 as described herein .

In an embodiment described above, only a single tile 16' was removed; however, tile 16 could al so be removed or both tiles 16, 16' could be removed with either one or a plurality of balli stic barrier panels 1 2 installed in the interior 1 8 of tiles 16, 16'. The invention should not be viewed as being limited in this respect. Only tiles 16, 16' on one side of frame 14 would need to be retrofitted with the ballistic barrier panel 12 and clips 20 to make system 10 of the present invention bullet resistant consistent with the testing described herein. In one embodiment, tiles 16, 16' span the entire horizontal width of frame 14, but they could be configured as a single tile or multiple tiles vertically. As described in more detail below, where multiple tiles are used, the seam between tiles 16, 16' can be forti ied against ballistic impact with additional protection. For the most part, outer tiles 16 ould be removed from frame 14 to be retrofitted, so that the orkspace would not need to be disrupted or dismantled.

Once tiles 1 6 on one side of the system are retrofitted, the ballistic barrier partition system 10 will be able to withstand a ballistic impact when fired upon from either direction. As explained below, ballistic barrier panel 12, 1 12 has been tested for balli stic resistance in accordance with various widely accepted standards. In addition, balli stic barrier partition system 10 was al so tested for ballistic impact. Seventeen rounds from a .357 Magnum were fired into ballistic barrier partition system 10 from a distance of 25 yards. Balli stic barrier panel 12 remained intact and was not dislodged in whole or in part from partition frame 14, which remained upright. No round passed through ballistic barrier panel 12.

In another embodiment, balli stic barrier partition system 100 and retrofit kit 1 1 1 are described with reference to FIGs. 8- 1 1 . Balli stic barrier partition system 100 comprises partition frame I 14, bal listic barrier panel 1 1 2 and mounting system 1 19 for securely mounting balli stic barrier panel 1 12 in partition frame I 14, as described in more detail below.

Partition frame I 14, which, in the embodiments shown i s substantially rectangular in shape, comprises two parallel side pieces 132 both of which are attached to top piece 138 and base 130. Partition frame 1 14 defines opening 1 17. As shown in embodiments herein, partition frame I 14 is made of steel, but could also be made of other suitable metals or material including plastic and wood, so long as the strength of the material is sufficient to support the weight of ballistic barrier panel 1 1 2 and mounting system 1 19, as well as the impact from balli stic projecti les. A plurality of partition frames I 14 may be connected together to form self-supporting ballistic barrier partition system 100 of the present invention. In another embodiment, system 100 may comprise supplemental support for partition frame 1 14.

Ballistic barrier partition system 100 further comprises ballistic barrier panel I 12. As described above, ballistic barrier panel 1 12 is made in the same manner and of the same materials as balli stic barrier panel 12, and will not be described further here. In one embodiment shown in FIG. 8, ballistic barrier panel 1 12 is cut to be substantially the same size as opening 1 1 7. In another embodiment shown in FIG. 1 1, ballistic barrier panel I 12 may comprise multiple panels 1 1 2, 1 12' positioned adjacent to one another. However, in that case, as shown, bal listic protection 150 for seam 1 13 may be provided.

Ballistic barrier partition system 100 al so comprises mounting system 1 19 as shown in FIGs. 9- 10. Mounting system I 19 comprises keyhole brackets 136, bolts 154 or screws 120 and inserts 1 26. In one embodiment, mounting system I 19 further comprises seam protection 1 50. In the embodiments shown, keyhole brackets 136 comprise long metal strips equipped with keyholes 140 at substantially evenly spaced interval s along the length of keyhole bracket 136, each keyhole 140 comprising circular opening 1 39 connected to longitudinal opening 14 1 having a width narrower than the diameter of circular opening 1 39. As shown in FIG. 9, keyhole bracket 1 36 comprises an angle bracket. In another embodiment, keyholes may be drilled or inserted directly into partition frame 1 14 (e.g., side pieces 1 32) as retrofitted or originally manufactured. In an alternative embodiment, individual keyhole brackets could al so be used. As shown, keyhole brackets 136 are affixed with self-tapping screws to opposing side pieces 132 on the interior of partition frame 1 14, although the invention should not be viewed as being limited in thi s respect. In addition, partition frame I 14 further comprises top insert 142 and bottom insert 144 which are connected parallel to top piece 138 and base 130, respectively, and perpendicular to side pieces 132. Keyhole brackets 1 36 may also be affixed to top insert 142 and bottom insert 144. Other means and configurations for attaching keyhole brackets 136 to partition frame 1 14 may also be used as would be familiar to one of ordinary skill in the art after becoming familiar with the teachings of the present invention .

Keyhole brackets 1 36 work in cooperation with screws 120 and inserts 126 which are embedded in ballistic barrier panel I 12 to secure balli stic barrier panel 1 12 to partition frame 1 14; screws 120 are configured to fit within and be retained by keyholes 140 so that, when gunfire is directed at panel back side 146 or panel front side 148, the integrity of ballistic barrier panel 1 1 2 is intact and it remains securely within partition frame 1 14. Screw 120 fits through ballistic barrier panel 1 12 and is secured within insert 126, which may be a threaded insert. In embodiments shown in FIGs. 9-10, insert 1 26 comprises t-nut 1 28. Other types of threaded inserts may al so be used. T- nut 128 is inserted into panel back side 146 in a configuration that aligns with selected keyholes 140 of keyhole bracket 136. In another embodiment in which ballistic barrier panel 1 12 includes a cementitious layer, insert 126, or screws 120 or both may be embedded in the cementitious layer during the process of manufacturing ballistic barrier panel 1 12.

Not every keyhole 140 of keyhole bracket 136 need be filled with screw 120 to hold ballistic barrier panel I 12 securely within partition frame 1 14. In one embodiment, the placement of insert 1 26 (e.g., t-nut 1 28) was at substantially uniform intervals ranging from between about 15.25 centimeters ( cm ) (6 in. ) to about 1 7.78 cm (7 in. ) apart, but could be as much as about 22.86 cm (9 in. ) apart. Screw 1 20 is configured to be inserted through panel front side 148 into each insert 126 to a substantially uniform depth so that each drive head 121 sits above the surface of front side 148 at a substantially uniform predetermined interval that permits ballistic barrier panel 1 12 to fit securely within frame 1 14 when screws 120 are inserted in keyholes 140. In an embodiment shown in FIGs. 9- 10, screw 120 comprises shoulder screw 123 with shoulder 123, threads 125 and spanner head 124. In another embodiment, double-headed screw 127 may also be used, particularly to maintain the substantially uniform interval above the surface of panel front side 148. Spanner head 124 may be preferred as it provides additional support for driv e head 1 2 1 so that it i s not sheared off due to forces generated by projectiles impacting ballistic barrier panel 1 1 2. Drive head 121 must be sized to fit through (e.g., be smaller than ) circular opening 1 39, but be retained by (e.g., be larger than) longitudinal opening 14 1 of keyhole 140. The total length of screw 120 must be sufficiently long to permit screw 120 be be secured within insert 126 while maintaining the predetermined depth so that drive head maintains the substantially uniform interv al abov e the surface of panel front side 148. As shown in FIGs. 8- 10, ballistic barrier panel 1 12 is secured to partition frame 1 13 by passing spanner heads 1 24 through circular openings 139 and retaining them in longitudinal openings 14 1 so balli stic barrier panel 1 12 is held securely within frame 1 14. Ballistic barrier panel 1 12 may comprise an exterior cover or wrapping, which may be fabric or could be a rigid sheet adhered to ballistic barrier panel 1 12 to give the balli stic barrier partition system 100 of the present inv ention a finished appearance, such as one may expect of an interior offi e partition system, for example.

In another embodiment, when ballistic barrier panel 1 12 comprises multiple panels, ballistic barrier partition system 100 may further comprise seam protection 1 50, as shown in FIG. 1 1 . At seam 1 13 where multiple balli stic barrier panels 1 1 2, 1 12' adjoin one another, a weakness is created in the ballistic barrier protection of system 100 of the present invention, making system 100 vulnerable to bullet penetration; therefore, in an embodiment, system 100 is equipped with protection plate 152 overlaying seam 1 13 to fortify seam 1 13 from panel front side 148 and panel back side 146 from being penetrated by bullets or other projectiles. In an embodiment, protection plate 152 comprises mild steel, which may be between about 5.08 cm (2 in.) and 7.62 (3 in.) wide and less than 1 .27 (0.5 in. ) thick, but the invention should not be viewed as being limited in this respect. Protection plate 152 may comprise other materials, including ballistic barrier material (as is used in ballistic barrier panel 12, 1 12), ballistic steel made from quenched and tempered armor steel plate meeting the ballistic resistant standards set forth herein, or a combination of such material s.

As shown in FIG 1 1, in an embodiment, protection plate 1 52 is sized to fit substantial ly perpendicularly between side pieces 132. Protection plate 1 52 covers seam 1 1 where ballistic barrier panels 1 1 2, 1 12' overlap or abut one another. Protection plate 152 may be secured to bal listic barrier panels 1 12, 1 12'in a manner similar to that explained above with respect to mounting system 1 19. T-nut 1 28 is inserted into the panel back side 146 of bal listic barrier panel 1 2' . Bolt 1 54, sized to penetrate protection plate 1 52 and ballistic barrier panels 1 12, 112', is inserted through protection plate 152 and panel front side 148 of ballistic barrier panel 1 12 into t-nut 128 and tightened.

Thus, when used in accordance with an existing OEM partition system, retrofit kit 1 1 1 may comprise ballistic barrier panel 1 12 and mounting system 1 19. With reference to FIG. 12, according to an embodiment of method 300 of the present invention, the OEM partition system may be retrofitted as follows using retrofit kit 1 1 1 : Partition frame 1 14 is provided. In an embodiment, at least one tile is removed from the partition frame 1 4 at step 302, leaving opening 1 17. At step 304, at least two keyhole brackets 136 having a plurality of substantially evenly-spaced keyholes 140 are attached to the interior of partition frame 1 14 on opposing sides of partition frame 1 14 in perpendicular relation to top piece 1 38 and base 130 of partition frame 1 14. Ballistic barrier panel 1 12 is then prepared to be installed within partition frame 1 14 (although this can be done at any time prior to installation ). Bal listic barrier panel 1 1 2 is sized (e.g., cut) to be substantially the same size as opening I 1 7. At step 306, a plurality of inserts 126 (e.g., t-nuts 128) are inserted into panel back side 146 at substantially uniform intervals that align ith placement of keyholes 140 in keyhole brackets 136. At step 308, a plurality of fasteners (e.g., screws 120), each having drive head 121 (e.g. , spanner head 1 24) is instal led in panel front side 148 and inserted into insert 1 26, so each drive head 12 1 is at substantially uniform distance from the surface of panel front side 146, each drive head 121 being sized to fit through and be retained by keyholes 140, as explained above. At step 310, ballistic barrier panel I 12, equipped with the fasteners inserted in the inserts 1 26, is secured to partition frame 1 14 by inserting the drive heads 12 1 of the fasteners through keyholes 140 so they are held in place by longitudinal openings 14 1 . Thus, ballistic barrier panel 1 1 2, 1 12' is secured within partition frame I 14 to produce ballistic barrier partition system 100.

Ballistic barrier partition system 100 will be able to w ithstand a balli stic impact when fired upon from either direction consistent with the ballistic ratings discussed herein. When subjected to such impacts, ballistic barrier partition system 100 remains upright and ballistic barrier panel 1 12, 1 12' remains in partition frame 1 14 and absorbs the impact from the bullets without being partial ly or completely di slodged. Ballistic barrier partition system 100 was tested for ballistic impact using a 44 Magnum handgun to fire 240 grain fiat nose cartridges from a di stance of 16 feet. Three shots were fired from a first direction into panel front side 146. Three shots were fired from a second direction into panel back side 148. Four additional shots were fired specifically at seam 1 3 fortified with seam protection 150. No bullets penetrated ballistic barrier partition system 100. Of the bullets aimed at seam 1 13, one bullet hit protection plate 152, which comprised mild steel , and fell out w ithout penetrating bal listic barrier partition system 1 14.

Ballistic Testing

As is explained in more detail below, ballistic barrier panel 12, 1 1 2 of certain shapes and sizes was tested repeatedly for its ability to withstand gunfire, although the invention should not be viewed as being limited to number or size of sheets of ballistic barrier material . For example, as would be familiar to one of ordinary skill in the art after becoming familiar with the teachings of the present invention, additional sheets or plies of ballistic barrier material or additional ballistic barrier panels 12, 1 12 may be used to afford greater protection, such as that desired to withstand gunfire from shotguns and rifles. Ballistic barrier panel 12, I 12 as described herein in the various embodiments of the present invention was subjected to eight rounds of ballistic resistance testing conducted in compliance with the test parameters established by the National Institutes of Justice (NU ). In all cases, ballistic barrier panel 12, I 12 exceeded NIJ performance requirements for shield products (NIJ 0108.01) and body armor (NIJ 0108.06), as well as Underwriters Laboratories (UL) performance requirements for bal listic glass (UL. 752 ) when being fired upon using a 44 Magnum or 9 mm handgun (NIJ I, 11- A, II and I II- A ratings; UL 752 Levels 1-3, 6) or using 7.62 mm 149 grain full metal jacket projectiles (e.g., rifle). Performance requirements were assessed using a V50 ballistic limit rating. The V50 rating, a military standard for the upper limit of effectiveness for ballistic shields, ami or and glass, is an average of an equal number of highest partial penetration and lowest complete penetration velocities. The V50 rating for NIJ l l l-A armor type requires that the ballistic material being tested withstand penetration at a required bullet velocity of 426 ± 15 m/s (1400 ± 50 ft/s) (NIJ 0108.01for shield products) or 436 m/s (1430 ft/s) (NIJ 0101.06 for body armor) when fired upon using a .44 Magnum or 9 mm pistol . In testing performed, ballistic barrier panel 12 substantially exceeded the V50 rating performance requirement of 436 m/s, as explained in more detail below. The V50 rating for NIJ III armor type requires that the ballistic material being tested withstand penetration at a required bullet velocity of 838± 15 m/s (2750 ± 50 ft/s) (NIJ 0108.01 for shield products) or 847 m/s (2880 ft/s) ( N IJ 0101.06 for body armor) when fired upon using a 7.62 mm, 149 grain, full metal jacket (FMJ), steel jacketed projectiles. In testing performed, ballistic barrier panel 12, 1 12 substantially exceeded the V50 rating performance requirement of 847 m/s, as explained in more detail below.

Test Round No. 1

In thi s test round, the ballistic barrier panel 1 2, 1 1 2 target was approximately 0.145 square meters ( m2) (225 in2) in size, with an average thickness of 5.23 mm (0.206 in) and a weight of 0.92 kilograms (kg) (2.03 lbs.), with a linear mass fiber density of 3000 denier (d). Average surface density was 6.35 kilograms per square meter (kg/m2) (1.3 lbs. /ft2). Test conditions were: obliquity, 0.0°; primary velocity screens; 1.52 m (5.00 ft), 1.62 m (5.30 ft); primary velocity location, 2.95 m (9.67 ft); range to target; 3.05 m (10.00 ft); target to witness 0.19 m ( 7.50 in ), 0.38 m (15.00 in), 0.00 m; temperature, 19.39 °C (66.9 °F); barometric pressure 10.10 kilopascal (kPa) (2.98 inches of mercury (inHg)); relative humidity; 44.2%. The witness was a thin sheet of aluminum (i.e., around 0.51 mm (0.020 in) of 2024T3 aluminum). Panels were clamped according to MIL-STD-662F. Ballistic barrier panel 12, 1 12 was subjected to testing in this manner with a 9 mm pistol with 124 grain (gr) full metal jacket ( FMJ ) ammunition with Accurate No. 2 powder.

A summary of test results using three high and three low points as set forth below in Table 1 is: V50, 505.36 meters per second (m/s) (1658 ft/s; high partial, 499.87 m/s (1640 ft/s); low complete, 505.97 m/s (1660 ft/s); and range of results, 36.27 m/s (1 19 ft/s). In all of the tables shown below, the results for partial are abbreviated with " Ρ; " complete, with "C. " Table 1

Figure imgf000015_0001

Test Round No. 2

In this test round, the ballistic barrier panel 12, 12 target was approximately 0.145 m2 (225 in2) in size, with an average thickness of 5.44 mm (0.214 in) and a weight of 0.93 kg (2,06 lbs.), with denier of 3000d. Average surface density was 6.35 kg/m2 (1.3 lbs./ft2). Test conditions were: obliquity, 0.0°; primary velocity screens; 1.52 m (5.00 ft), 1.62 m (5.30 ft); primary velocity location, 2.95 m (9.67 ft); range to target, 3.05 m (10.00 ft); target to witness 0.19 m (7.50 in), 0.38 m (15.00 in), 0.00 m; temperature, 19.5 C (67.1 °F); barometric pressure 10.10 kPa (2.98 inHg); relative humidity; 45.5%. The witness was a thin sheet of aluminum (i.e., around 0.51 mm (0.020 in) of 2024T3 aluminum). Panels were clamped according to MIL-STD-662F. Ballistic barrier panel 12, 1 12 was subjected to testing in this manner with a 9 mm pistol with 124 gr FMJ ammunition with Accurate No. 2 powder.

A summary of test results using three high and three low points as set forth below in Table 2 is: V5o, 515.64 m/s (1695 ft/s); high partial, 513.28 m/s (1684 ft/s); low complete, 518.46 m/s (1701 ft/s); and range of results, 23.77 m/s (78 ft/s).

Table 2

Shot Powder/ Time 1 Vel. 1 Vel. 1 Time 2 Vel. 2 Vel. 2 Avg. Avg. Result Include

No. Seating i≠) (ft/s) (m/s) (|TS) (ft s) (m/s) Vel. Vel. in V50

(ft'S) (m/s)

1 8.3 3280 1524 464.52 2840 1526 465.12 1525 464.82 P False

2 9.3 2930 1706 519.99 2541 1705 519.68 1706 519.99 C True

3 8.5 3161 1582 482.19 2732 1586 483.41 1584 482.80 P False 4 8.9 2976 1680 512.06 2578 1681 512.37 1680 512.06 P True

5 9.2 2971 1683 512.98 2572 1685 513.59 1684 513.28 P True

6 9.5 2877 1738 529.74 2491 1739 530.05 1739 530.05 c True

7 9.3 2937 1702 518.77 2548 1701 518.47 1701 518.46 c True

8 9.0 3011 1661 506.27 2608 1661 506.27 1661 506.27 P True

Test Round No. 3

In this test round, ballistic barrier panel 12, 112 target was approximately 0.145 m2 (225 in2) in size, with an average thickness of 5.33 mm (0.210 in) and a weight of 0.842 kg (1.86 lbs.), with denier of 3000d. Average surface density was 5.96 kg/m2 (1.22 lbs. /ft2). Test conditions were:

obliquity, 0.0°; primary velocity location, 1.52 m (5 ft); range to target, 4.57 m (15 ft); target to witness 0.10 m (4 in); temperature, 21.1 °C (70 °F); barometric pressure 10.10 kPa (2.98 inHg); relative humidity; 44%. The witness was a thin sheet of aluminum (i.e., around 0.51 mm (0.020 in) of 2024T3 aluminum). Panels were clamped according to M IL-STD-662F. Ballistic barrier panel 12. 112 was subjected to testing in this manner with a .44 Magnum pistol with 240 gr Speer 4453 ammunition with Bullseye powder.

A summary of test results using two high and two low points as set forth below in Table 3 is: V50, 481.89 m/s (1581 ft/s); high partial, 489.20 m/s (1605 ft/s); and, low complete, 479.15 m/s (1572 ft/s).

Table 3

Figure imgf000016_0001

Test Round No. 4

In this test round, ballistic barrier panel 12, 112 target was approximately 0.145 m2 (225 in2) in size, with an average thickness of 5.33 mm (0.210 in) and a weight of 0.838 kg (1.85 lbs.), with denier of 3000d. Average density was 5.96 kg/m2 (1.22 lbs. /ft2). Test conditions were: obliquity, 0.0°; primary velocity location, 1.52 m (5 ft); range to target 4.57 m ( 15 ft); target to witness 0.10 m (4 in); temperature, 21.1 °C (70 °F); barometric pressure 9.55 kPa (2.82 inHg); relative humidity, 44%. The witness was a thin sheet of aluminum (i.e., around 0.51 mm (0.020 in) of 2024T3 aluminum ). Panels were clamped according to MIL-STD-662F. Ballistic barrier panel 12, 1 12 was subjected to testing in this manner with a .44 Magnum pistol with 240 gr Speer 4453 ammunition with Builseye powder.

A summary of test results using two high and two low points as set forth below in Table 4 is: V50, 479.76 m/s (1574 ft/s); high partial, 471.83 m/s (1548 ft/s); and, low complete, 487.07 m/s (1598 ft/s).

Table 4

Figure imgf000017_0001

Test Round No. 5

In this test round, ballistic barrier panel 12, 1 12 target was approximately 0.145 m2 (225 in2) in size, with an average thickness of 5.33 mm (0.210 in) and a weight of 0.846 kg (1.87 lbs.), with denier of 3000d. Average surface density was 5.96 kg/m2 (1.22 lbs. /ft2). Test conditions were: obliquity, 0.0°; primary velocity location, 1.52 m (5 ft); range to target, 4.57 m (15 ft); target to witness 0.10 m (4 in); temperature, 21.1 °C (70 °F); barometric pressure 9.55 kPa (2.82 inHg); relative humidity; 44%. The witness was a thin sheet of aluminum (i.e., around 0.020 in of 2024T3 aluminum). Panels were clamped according to MIL-STD-662F. Ballistic barrier panel 12, 112 was subjected to testing in this manner with a .44 Magnum pistol with 240 gr Speer 4453 ammunition with Builseye powder.

A summary of test results using two high and two low points as set forth below in Table 5 is: V50, 484.33 m/s (1589 ft/s); high partial, 481.89 m/s (1581 ft's); and, low complete, 486.77 m/s (1597 ft/s). Table 5

Figure imgf000018_0001

Test Round No. 6

In this test round, ballistic barrier panel 12, 112 target was approximately 0.145 m2 (225 in2) in size, with an average thickness of 5.33 mm (0.210 in) and a weight of 0.846 kg (1.87 lbs.), with denier of 3000d. Average surface density was 5.96 kg/m2 (1.22 lbs. /ft2). Test conditions were:

obliquity, 0.0°; primary velocity location, 1.52 m (5 ft); range to target, 4.57 m (15 ft); target to witness 0.10 m (4 in); temperature, 21.1 C (70 °F); barometric pressure 9.55 kPa (2.82 inHg); relative humidity; 44%. The witness was a thin sheet of aluminum (i.e., around 0.51 mm (0.020 in) of 2024T3 aluminum). Panels were clamped according to MIL-STD-662F. Ballistic barrier panel 12, 1 12 was subjected to testing in this manner with a .44 Magnum pistol with 240 gr Speer 4453 ammunition with Bullseye powder.

A summary of test results using two high and two low points as set forth below in Table 6 is: V50, 471.83 m/s (1548 ft/s); high partial, 466.65 m/s (1531 ft/s); and, low complete, 479.45 m/s (1573 ft/s).

Table 6

Shot Powder Vel. 1 Vel. 1 Vel. 2 Vel. 2 Avg. Avg. Result Include Notes

No. (g) (ft/s) (m/s) (ft/s) (m/s) Vel. Vel. in V5o

(ft/s) (nvs)

1 0.96 1573.0 479.45 1572.0 479.15 1572.5 479.30 C True

2 0.94 1576.0 480.36 1573.0 479.45 1574.5 479.91 c True

3 0.90 1532.0 466.95 1530.0 466.34 1531.0 466.65 P True

4 0.88 1516.0 462.08 1513.0 461.16 1514.5 461.62 P True 5 0.96 1585.0 483.11 1584.0 482.80 1584.5 482.96 C False

6 0.89 1513.0 461.16 1511.0 460.55 1512.0 460.86 C False Delaminated

too much

Test Round No. 7

In this test round, ballistic barrier panel 12, 1 12 target was approximately 0.145 m2 (225 in2) in size, with an average thickness of 23.65 mm (0.931 in) and a weight of 3.26 kg (7.18 lbs.). Test conditions were: obliquity, 0.0°; primary velocity location, 2.44 m (8 ft); range to target, 15.24 m (15 ft); target to witness 0.15 m (6.0 in); temperature, 20.28 °C (68.5 °F); barometric pressure 100.91 kPa (29.8 inHg); relative humidity; 44.6%. The witness was a thin sheet of aluminum (i.e., around 0.508 mm (0.020 in) of 2024T3 aluminum). Panels were clamped according to MIL-STD- 662 F. Ballistic barrier panel 12, 1 12 was subjected to testing in this manner with a 7.62mm, 149- grain FMJ, steel jacketed projectile fired from a universal receiver fitted with an appropriate barrel and mounted; powder was N 1 33.

A summary of test results using three high and three low points as set forth below in Table 7 is: V50, 883.62 m/s (2899 ft/s); high partial, 889.41 m/s (2918ft/s); and, low complete, 877.82 m/s (2880 ft/s).

Table 7

Figure imgf000019_0001

Test Round No. 8

In this test round, ballistic barrier panel 12, 1 12 target was approximately 0.145 m2 (225 in2) in size, with an average thickness of 23.83 mm (0.938 in) and a weight of 3.26 kg (7.18 lbs.). Test conditions were: obliquity, 0.0°; primary velocity location, 2.44 m (8 ft); range to target, 15.24 m (15 ft); target to witness 0.15 m (6.0 in); temperature, 20.39 °C (68.7 °F); barometric pressure 100.91 kPa (29.8 inHg); relative humidity; 43.9%. The witness was a thin sheet of aluminum (i.e., around 0.508 mm (0.020 in) of 2024T3 aluminum). Panels were clamped according to MIL-STD- 662 F. Ballistic barrier panel 12, 1 12 was subjected to testing in this manner with a 7.62mm, 149- grain FMJ, steel jacketed projectile fired from a universal receiver fitted with an appropriate barrel and mounted; powder was N133.

A summary of test results using two high and two low points as set forth below in Table 8 is: V5o, 893.67 m/s (2932 ft/s); high partial, 896.11 m/s (2940 ft/s); and, low complete, 893.06 m/s (2930 ft/s).

Table 8

Figure imgf000020_0001

In understanding the scope of the present invention, the terms "comprising," having" and "including" and their derivatives, as used herein, are intended to be open ended terms. Terms of degree such as "substantially," "about" and "approximate" as used herein mean a reasonable amount of deviation of the modified term such that the end result is not significantly changed. For example, these terms can be construed as including a deviation of at least ±5% of the modified term if this deviation would not negate the meaning of the word it modifies.

While selected embodiments have been chosen to illustrate the present invention, various changes and modifications can be made herein without departing from the scope of the invention as defined in the claims. For example, the size, shape, location or orientation of the various components can be changed as needed and/or desired. Components that are shown directly connected or contacting each other can have intermediate structures disposed between them. The functions of one element can be performed by two, and vice versa. Structures and functions of one embodiment can be adapted to another embodiment. The present invention could also be used in conjunction with various components and in other configurations, either now known in the art or that may be developed in the future, so long as the objects and features of the invention are achieved, as would become apparent to persons having ordinary skill in the art after having become familiar with the teachings provided herein. Consequently, the present invention should not be regarded as limited to that shown and described herein for the purpose of limiting the invention as defined by the appended claims and their equivalents.

Having herein set forth preferred embodiments of the present invention, it is anticipated that suitable modifications can be made thereto which will nonetheless remain within the scope of the invention, including all changes that come within the meaning and range of equivalents. The invention shall therefore only be construed in accordance with the following claims:

Claims

What is claimed is:
1. A method for equipping a partition system comprising a plurality of tiles removably attached with a plurality of clips to a substantially rectangular partition frame with a ballistic barrier panel, comprising:
removing at least one tile from the partition frame, the tile comprising at least two brackets attached to an interior side of the tile on opposing sides, the two brackets comprising openings to support the clips;
removing the clips;
fitting the ballistic barrier panel to the interior side of the tile within the two brackets;
fitting a plurality of retrofit clips within the openings;
after the fitting of the plurality of retrofit clips, fastening the retrofit clips to the bracket to form a retrofitted tile;
using the retrofit clips to reposition the retrofitted tile on the partition frame to produce retrofitted partition system.
2. The method of claim 1, wherein the openings comprise a top opening and a bottom opening.
3. The method of claim 2, wherein the retrofit clips comprise a top clip shaped to be received by the top opening and a bottom clip shaped to be received by the bottom opening.
4. The method of claim 1, wherein retrofitted partition system is configured to absorb impact of projectiles fired from a firearm without being dislodged from the frame.
5. A method for retrofitting a partition system comprising a plurality of tiles secured within a substantially rectangular partition frame with a ballistic barrier panel, the ballistic barrier panel having a front side and a back side, comprising:
removing at least one tile from the partition frame;
attaching at least two keyhole brackets to the interior of the partition frame on opposing sides of the partition frame, the keyhole brackets comprising a plurality of keyhole-shaped openings; installing a plurality of inserts through the back side of the ballistic barrier panel;
installing a plurality of fasteners each having a drive head through the front side of the balli stic barrier panel into the plurality of inserts so each drive head i s a substantially uniform distance from a surface of the front side of the ballistic barrier panel, the drive head being sized to fit through and be retained by the keyhole-shaped openings; and
securing the ballistic barrier panel to the partition frame by inserting the drive heads of the plurality of fasteners through the keyhole shaped openings,
6. The method of claim 6, wherein the keyhole-shaped openings are keyholes substantially evenly spaced along the l ength of the keyhole brackets,
7. The method of claim 6, wherein the installing comprises installing the plurality of inserts through the back side of the ballistic barrier panel at predetermined intervals established to line up with a plurality of the keyholes.
8. The method of claim 1, wherein the insert is a threaded insert and the fastener is a screw with a spanner-type drive head.
9. The method of claim 8, wherein the threaded insert is a t-nut.
10. A ballistic barrier partition system, comprising:
a substantially rectangular frame, comprising two parallel opposing sides, a top side and a bottom side, the substantially rectangular frame defining an opening;
two keyhole brackets attached to an interior of of the partition frame on each of the opposing sides, the keyhole brackets comprising a plurality of keyhole-shaped openings spaced at along the length of the keyhole brackets;
a ballistic barrier panel, the ballistic barrier panel being substantially rigid and substantially the same size as the opening, the ballistic barrier panel comprising a plurality of embedded fasteners aligned with and received by the keyhole-shaped openings.
1 1. The ballistic barrier partition system of claim 10, further comprising a wrapping placed on the outside of the ballistic barrier panel.
12. The ballistic barrier partition system of claim 10, wherein the ballistic barrier panel has a V50 rating of at least 471 meters per second.
13. The ballistic barrier partition system of claim 10, wherein the ballistic barrier panel comprises a first subpanel and a second subpanel adjoined at a seam; and further comprising a protection plate covering the seam and a fastener, the fastener being configured to laminate the protection plate, first subpanel and second subpanel.
14. The ballistic barrier partition system of claim 10, wherein the ballistic barrier partition system is configured to have the ballistic barrier panel absorb impact of projectiles fired from a handgun without being dislodged from the partition frame.
15. The ballistic barrier partition system of claim 10, wherein the embedded fasteners comprise plurality of screws inserted through a front side of the ballistic barrier panel into a plurality of threaded inserts installed through a second side of the ballistic barrier panel , the threaded inserts each comprising an open threaded portion for receiving the screw.
16. The ballistic barrier partition system of claim 10, wherein the ballistic barrier panel has a V50 rating of at least 883 meters per second.
1 7. The ballistic barrier partition system of claim 10, wherein each keyhole-shaped opening comprises a circular opening connected to a longitudinal opening having width narrower than the diameter of the circular opening.
PCT/US2016/023167 2015-03-20 2016-03-18 Ballistic barrier partition system and retrofit kit WO2016154014A1 (en)

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Citations (5)

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US7886651B2 (en) * 2004-11-02 2011-02-15 Life Shield Engineering Systems, LLC Shrapnel and projectile containment systems and equipment and methods for producing same
US20110289872A1 (en) * 2010-05-28 2011-12-01 ARXX Building Products Wall clip and shim adapted for insulating concrete walls and similar materials
US8069769B2 (en) * 2005-04-25 2011-12-06 Dynamic Defense Materials, Llc Portable protection device
US20120073233A1 (en) * 2010-09-24 2012-03-29 Principle Holdings Limited Modular walling systems
US8549809B2 (en) * 2009-04-07 2013-10-08 Kinetics Noise Control, Inc. Vibration isolation mounting clip

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7886651B2 (en) * 2004-11-02 2011-02-15 Life Shield Engineering Systems, LLC Shrapnel and projectile containment systems and equipment and methods for producing same
US8069769B2 (en) * 2005-04-25 2011-12-06 Dynamic Defense Materials, Llc Portable protection device
US8549809B2 (en) * 2009-04-07 2013-10-08 Kinetics Noise Control, Inc. Vibration isolation mounting clip
US20110289872A1 (en) * 2010-05-28 2011-12-01 ARXX Building Products Wall clip and shim adapted for insulating concrete walls and similar materials
US20120073233A1 (en) * 2010-09-24 2012-03-29 Principle Holdings Limited Modular walling systems

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