Breaching Device with Tamping Gel
20220276036 · 2022-09-01
Assignee
Inventors
Cpc classification
F42B3/22
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F42D1/08
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F42D1/20
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F42D5/00
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F42D1/28
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
F42D1/28
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F42B3/22
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
A breaching device includes a body having a tamping material. The body has a target surface that is configured to face a target to be breached and a backing surface that is opposite the target surface. The tamping material is formed of gel and is configured to reflect an explosive force directed way from the target surface towards the target surface.
Claims
1. A breaching device comprising: a body configured to contain an explosive material, the body having a target surface and a backing surface opposite the target surface, the target surface configured to face a target to be breached, the body including a tamping material formed of a non-aqueous material that holds its form, the tamping material configured to reflect an explosive force directed away from the target surface towards the target to be breached when the target surface faces the target to be breached.
2. The breaching device according to claim 1, wherein tamping material has a Shore hardness in the range between 020 and 040.
3. The breaching device according to claim 1, wherein the tamping material comprises a cured gel.
4. The breaching device according to claim 1, wherein the tamping material comprises a plant-based gel.
5. The breaching device according to claim 1, wherein the tamping material comprises a silicone gel.
6. The breaching device according to claim 1, wherein the target surface of the body is square, rectangular, or circular in shape.
7. The breaching device according to claim 6, wherein the target surface is circular in shape and has a diameter in a range between 4 inches and 16 inches.
8. The breaching device according to claim 6, wherein the target surface is square or rectangular in shape and has a minimum width of 4 inches and a maximum length of 16 inches.
9. The breaching device according to claim 1, wherein the tamping material forms the backing surface of the body, the backing surface being planar.
10. The breaching device according to claim 1, wherein the entire body is formed of non-metallic materials.
11. The breaching device according to claim 1, wherein the body includes a pushing medium configured to be disposed between the explosive material and the target surface, the pushing medium configured to press into a target in response to and distribute the explosive force at a portion of the target.
12. The breaching device according to claim 11, wherein the target surface includes an adhesive configured to attach the body to the target.
13. The breaching device according to claim 11, further comprising a housing having two sidewalls interconnected by a backing wall, each sidewall formed along a side surface of the body and the backing wall formed along a back surface of the body, the side surfaces of the body interconnecting the target surface and the backing surface.
14. The breaching device according to claim 13, wherein the housing includes a cover that is hinged to one of the sidewalls and configured to attached to the opposite sidewall to define a cavity therein, the tamping material received within the cavity, the cavity configured to contain the explosive material.
15. The breaching device according to claim 14, wherein the sidewalls, the cover, and the backing wall define an opening, the opening configured to receive explosive material therethrough when the cover is secured in a closed position.
16. The breaching device according to claim 15, further comprising a cartridge including explosive material and a carrier material, the explosive material secured to the carrier material, the cartridge insertable and removable through the opening when the cover is secured in the closed position.
17. The breaching device according to claim 14, wherein the cover has an open position in which the cavity is accessible opposite the backing wall.
18. The breaching device according to claim 17, wherein the cover includes a closure section that is configured to secure to a sidewall opposite the sidewall to which the cover is hinged, the closure section including adhesive.
19. The breaching device according to claim 13, wherein the housing is formed of cardboard.
20. A breaching kit comprising: a first breaching device according to claim 1; and a second breaching device according to claim 1.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Various aspects of the present disclosure are described hereinbelow with reference to the drawings, which are incorporated in and constitute a part of this specification, wherein:
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DETAILED DESCRIPTION OF EXAMPLES OF THE INVENTION
[0044] The present disclosure will now be described more fully hereinafter with reference to example embodiments thereof with reference to the drawings in which like reference numerals designate identical or corresponding elements in each of the several views. These example embodiments are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Features from one embodiment or aspect can be combined with features from any other embodiment or aspect in any appropriate combination. For example, any individual or collective features of method aspects or embodiments can be applied to apparatus, product, or component aspects or embodiments and vice versa. The disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. As used in the specification and the appended claims, the singular forms “a,” “an,” “the,” and the like include plural referents unless the context clearly dictates otherwise. In addition, while reference may be made herein to quantitative measures, values, geometric relationships or the like, unless otherwise stated, any one or more if not all of these may be absolute or approximate to account for acceptable variations that may occur, such as those due to manufacturing or engineering tolerances or the like.
[0045] Referring to
[0046] The tamping material 12 is configured to direct or reflect an explosive force towards a target. By reflecting an explosive force towards the target, an amount of explosive material and/or explosive energy directed away from the target may be reduced. By reducing the explosive material and/or explosive energy directed away from the target, the efficiency of a given explosive force may be increased, a reduction in debris directed away from the target may be obtained, and a risk of harm to the personnel using the breaching device 10 may be reduced. In addition, the safe standoff distance for a given weight of explosive material may be reduced.
[0047] The tamping material 12 may be a soft yet strong gel. The tamping material 12 may be a non-aqueous gel. In some embodiments, the tamping material may be a silicone-based gel or a plant-based gel. In certain embodiments, the tamping material 12 may be a gel with a Shore hardness tested under American Society for Testing and Materials International Standards (ASTM) D2240 in a range of about 020 to about 040. In embodiments, the tamping material may be a silicone gel having a Shore hardness of about 35 (ASTM D2240). The softness of the tamping material 12 may reduce hazards of debris created if the tamping material 12 fractures during an Explosive Breaching operation. The tamping material 12 may be useable in a temperature range of about −40° F. to about 450° F. may have other physical properties such as: [0048] Tensile Strength of about 12 psi [0049] ASTM D412 [0050] Ultimate Elongate of about 60% [0051] ASTM D412 [0052] Density of 0.967 g/cm.sup.3 [0053] ASTM D297 with Die C dumbbells tested at 20 inches/minute [0054] Tear Resistance of about 13 lbf/inch [0055] ASTM D624 with Die C Specimens tested at 20 inches/minute [0056] Compression Set of about 25.7% [0057] ASTM D395—Method B—Specimens aged 22 hrs. @ 158° F., 25% deflection, ½ hr. recovery
Some examples of suitable tamping materials 12 include, but are not limited to, Ecoflex™ Gel available from Smooth-On, Inc. of Macungie, Pa. Such a tamping material 12 may be non-toxic, may not melt, and/or may not create a slip hazard after a breaching operation. In some embodiments, the tamping materials 12 may be a cured gel that holds its form without external reinforcement.
[0058] Continuing to refer to
[0059] The pushing medium 14 may include polyethylene strips or rubber belting. The pushing medium 14 may be a rubber that is capable of stretching to many times its original size without tearing while being resilient to rebound to its original form without distortion. For example, the pushing medium 14 may be a rubber belt formed of Styrene Butadiene Rubber (“SBR”). The rubber belt may be about 0.30 inches to about 0.70 inches thick, e.g., about 0.47 inches thick, may have a working tension of about 330 lbs./inch of width, and may be capable of withstanding temperatures in a range of about −25° F. to about 225° F. When the pushing medium 14 includes polyethylene strips, the polyethylene strips may have similar properties to the rubber belt detailed above. Alternatively, other materials may be used as a pushing medium 14.
[0060] The pushing medium 14 may include a reinforcing material 13 configured to maintain a shape of the pushing medium 14 and/or to secure the pushing medium 14 within the housing 20. The reinforcing material 14 may be a fabric or other non-metal fiber reinforcement that is secured to or integrally formed with the pushing medium 14.
[0061] With continued reference to
[0062] In certain embodiments, the housing 20 may include a cover that extends from one of the side walls 30 and is configured to fold over the cavity 34 and attach to the opposite sidewall 30. The cover may form a hinge with the sidewall from which it extends. The cover may be monolithically formed with the one of the sidewalls 30 from which it extends. The hinge may be a living hinge. The cover 38 may include a closure section that is configured to attach to the opposite sidewall 30. The closure section may include an adhesive material formed thereon that is configured to attach to the opposite sidewall 30. The adhesive material may be covered by a removable tear strip that covers and protects the adhesive material before use. The tear strip may prevent premature attachment of the closure section to the opposite sidewall 30. The closure section may be monolithically formed with the rest of the cover. The closure section may form a hinge with the rest of the cover. The hinge formed between the closure section and the rest of the cover may be a living hinge. An example of such a cover and a hinge is detailed and shown with respect to breaching device 310 below (
[0063] With additional reference to
[0064] With continued reference to
[0065] The explosive material 16 may be detonation cord and may have a range of about 30 grains to about 100 grains per linear foot, e.g., about 50 grains per linear foot. In some embodiments, the explosive material 16 may be a plastic explosive or a sheet explosive.
[0066] The use of the breaching device 10 will be detailed with reference to
[0067] The breaching device 10 may be selected such that the body 11 has an elongated shape adapted for installation onto a door along and adjacent its hinges. For example, the body 11 of a selected breaching device 10 may have a length of about 79.5 inches, a width of about 1 inch, and a height of about 1.5 inches. The breaching device 10 may be provided as a kit as detailed below. When the breaching device 10 is provided as a kit, the kit may be assembled by linking multiple breaching devices 10 together such that the individual breaching devices 10 detonate substantially simultaneously or in series with one another.
[0068] In embodiments, the breaching device 10 available may be configured as a pushing charge and include the pushing medium 14 and the breaching solution may require a blasting charge. In such embodiments, the user may modify the breaching device 10 from a pushing charge to a blasting charge by removing the pushing medium 14 and/or reducing a height of the sidewalls 30 to accommodate the pushing medium 14. The breaching device 10 may include features, e.g., perforation lines 140 (
[0069] In some embodiments, the breaching device 10 available may have a length greater than a length required by the breaching solution. In such embodiments, the user may modify the breaching device 10 by cutting the housing 20 and/or the body 11 to a desired length. The breaching device 10 may include features, e.g., perforation lines 140 (
[0070] With the breaching device 10 modified to the breaching solution, the explosive material 16 may be installed by exposing a groove 22 in a target surface 12a of the tamping material 12 and disposing the explosive material 16 within the groove 22. The explosive material 16 may extend beyond one or both ends of the tamping material 12. In some embodiments, the groove 22 is exposed by peeling back or removing a portion of a pushing medium 14 that is disposed along the target surface 12a of the tamping material 12 and disposing the pushing medium 14 over the explosive material 16 within the groove 22. The pushing medium 14 may retain the explosive material 16 within the groove 22. In some embodiments where the tamping material 12 does not include a groove 22, the explosive material 16 is installed by pressing the explosive material 16 into the target surface 12a of the tamping material 12. The explosive material 16 may be centered along the target surface 12a or may be offset from a centerline of the target surface 12a.
[0071] With the explosive material 16 installed within the breaching device 10, the breaching device 10 is attached or secured to the target with the target surface 12a of the tamping material 12 facing the target. The breaching device 10 may be attached or secured to the target by an adhesive layer 24 applied to a target surface 11a of the body 11 that is configured to be in contact with the target. The target surface 11a of the body 11 may be the target surface 12a of the tamping material 12, a surface of the pushing material 14 facing the target, or a surface of the reinforcement material 13 facing the target.
[0072] When the breaching device 10 is attached or secured to the target, the user and/or other members of the breaching team, who intend to make entry through the breach, back off a standoff distance from the target and the user detonates the explosive material 16. Upon detonation, the tamping material 12 reflects a portion of an explosive force of the explosive material 16 directed away from the target, towards the target and thus, reduces the effect of the explosive force away from the target and increases the explosive force toward the target.
[0073] By reducing the effect of the explosive force away from the target, the standoff distance can be decreased. The standoff distance from a given explosive breach depends on the net explosive weight of the explosive material, the materials involved in charge construction, and other environmental factors. The tamping material 12 and construction of the breaching device 10 reduce the weight of the explosive material 16 required for a given target. In addition, the materials used in the construction of the breaching device 10 reduce a potential harm to a user and/or other breaching team members such that the standoff distance can be reduced. For example, when a breaching device is constructed using rigid components, e.g., metal or rigid plastic components, the standoff distance is greater to decrease the possibility of shards of the rigid components becoming shrapnel and injuring team members. As the breaching device 10 includes substantially non-rigid, e.g., cardboard, gel, and rubber, and does not include rigid components, the standoff distance can be reduced when compared to another breaching device including metallic or rigid plastic components. Thus, the non-metallic components of the breaching device 10 allow for a reduced standoff distance. A reduced standoff distance from the target reduces the access time for a breaching team, which may increase the efficacy of a breaching operation in support of follow-on operations. For example, with reduced standoff distance, a breaching team may make entry to the structure or room while the occupants are still dazed or disoriented, increasing the survivability of the team members, hostiles behind the breaching target, and/or friendlies behind the breaching target, e.g., hostages.
[0074] When the breaching device 10 includes the pushing medium 14, the explosive force directed to the target presses the pushing medium 14 towards the target such that the pushing medium 14 distributes the explosive force onto a desired portion of the target. The pushing medium 14 may also act as a cutting means to sever a component of the target, e.g., a hinge or a lock of a door.
[0075] The explosive force and/or the pushing medium 14 creates a breach by cutting or shearing components of the target. For example, the explosive force may shear hinges or a locking mechanism of a door allowing breaching team to gain entry through the door.
[0076] After the detonation, the user and/or breaching team members pass through the breach to complete the breaching operation. As noted above, the tamping material 12 may be a non-slip material such that after the detonation, any tamping material 12 that is on the ground does not create a slip hazard for the breaching team members.
[0077] Referring now to
[0078] Allowing multiple breaching devices 10 to be assembled into a single device may allow for easier transport to a target. In addition, the breaching device 10 or the kit 2 detailed herein may have reduced weight and be easier to transport when compared to other tamping devices, e.g., devices that use water in as a tamping material. In some embodiments, the kit 2 may have three pieces that are each about 1 inch wide and about 26.50 inches in length and weigh less than 5.5 pounds. In such an embodiment, the kit 2 could assemble into a single breaching device having a length of about 79.5 inches which is the height of a standard-sized residential door in the United States. Other dimensions are for breaching devices and number of breaching devices of a kit 2 to accommodate other standard size doors are anticipated. In some embodiments, the number of breaching devices 10 of a kit 2 are determined by the number of hinges for a given size door and the length of each breaching device 10 is determined such that each breaching device 10 of a kit 2 is substantially centered at a hinge of the standard size door. The breaching devices 10 of a kit 2 may each have the same length or may have differing lengths.
[0079] Referring now to
[0080] With reference to
[0081] The breaching device 200 is configured to receive an explosive material 216 between the tamping material 212 and the pushing medium 214. For example, the body 211 of the breaching device 200 can be separated along a boundary between the tamping material 212 and the pushing medium 214 and the explosive material 216 may be disposed between the tamping material 212 and the pushing material 214 and then the body 211 may be reassembled. Specifically, a coil or ring of detonation cable can be pressed into a target surface 212a of the tamping material 212 and then the body 211 reassembled as shown in
[0082] In use, one or more breaching devices 200 are place on a target with the target surface 211a secured to the target. The target surface 211a may include an adhesive 224 to secure the breaching device 200 to the target. The breaching device 200 may be placed at a location of a hinge or a locking member of the target. When detonated, the tamping material 212 reflects explosive energy directed away from the target towards the target and the explosive energy drives the pushing medium 214 towards the target to create a breach. For example, the explosive energy may shear hinges of a door or a locking mechanism of the door allowing entry.
[0083] The breaching devices 10 and 200 and the kits, e.g., kit 2, detailed above may include one or more of the following advantages. The breaching devices 10, 200 and kits are lightweight, portable, and/or easy to assembly during a breaching operation. In addition, an individual breaching device 10, 200 or a kit can be easily modified in length, explosive content, and/or between pushing charge and an explosive charge during a breaching operation to provide maximum flexibility for a single breaching device 10, 200 or kit. Further, in use, the breaching devices 10, 200 and kits detailed herein are easy to assembly, easy to hang or attach to a target, and stable to transport and/or store. The breaching devices 10, 200 and kits can be used in and have been tested in all weather conditions. The tamping material 12 has also been shown to be an effective tamping agent that is non-toxic, does not melt, and does not pose a slip hazard after detonation of the breaching device. In addition, the breaching devices 10, 200 are entirely non-metallic to reduce harmful shrapnel during breaching operations.
[0084] Referring now
[0085] The breaching device 310 includes a body 311 and a tamping material 312. The tamping material 312 is configured to direct or reflect an explosive force towards a target similar to the tamping material 12 detailed above. The tamping material 312 may be formed of non-aqueous gel. In certain embodiments, the tamping material 312 may be a plant based or silicone based gel. In some embodiments, the tamping material 312 is a cured gel that holds its form; e.g., absent external support. In particular embodiments, the breaching device 310 includes a pushing medium 314 similar to the pushing medium 14 detailed above. In certain embodiments, the breaching device 310 includes explosive material 316. The explosive material 316 may be similar to the explosive material 16 detailed above. In particular embodiments, the breaching device 310 is provided without an explosive material 316 which may be added by an operator before use as detailed below.
[0086] The body 311 is formed of non-rigid materials that are substantially rigid in form. For example, the body 311 may be formed of cardboard that is substantially rigid while reducing the likelihood of dangerous shrapnel when the breaching device 310 explodes. The body 311 includes sidewalls 330, a backing wall 332, and a cover 338. The body 311 may define a cavity 334 that is configured to receive the tamping material 312, the pushing medium 314, and/or the explosive material 316. The cover 338 extends from one of the sidewalls 330 and is configured to fold over the cavity 334 and attach to the opposite sidewall 330. The cover 338 may form a hinge 339 with the sidewall from which it extends. The cover 338 may be monolithically formed with the one of the sidewalls 330 from which it extends. The hinge 339 may be a living hinge. The cover 338 may include a closure section 338a that is configured to attach to the opposite sidewall 330. The closure section 338a may include an adhesive material 338b formed thereon that is configured to attach to the opposite sidewall 330. The adhesive material 338b may be covered by a removable tear strip 338c that covers and protects the adhesive material 338b before use. The tear strip 338c may prevent premature attachment of the closure section 338a to the opposite sidewall 330. The closure section 338a may be monolithically formed with the rest of the cover 338. The closure section 338a may form a hinge with the rest of the cover 338. The hinge formed between the closure section 338a and the rest of the cover 338 may be a living hinge.
[0087] The cover 338 includes an open position as shown in
[0088] When the cover 338 is in the closed position, the explosive material 316 may be removed through an opening 342 at an end of the body 311. In some embodiments, the body 311 may include one or more end walls 336 that extend between the sidewalls 330 to substantially close an end of the cavity 334. The body 311 may include a single end wall 336 and an opening 342 opposite the single end wall 336. The opening 342 may allow for the explosive material 316 to be inserted or removed from within the cavity 334 after the cover 338 is secured the closed position.
[0089] With particular reference to
[0090] Allowing the explosive material 316 to be removed and inserted through the opening 342 may allow for the breaching device 310 to be configured or to be reconfigured in the field as a hot-swappable cartridge 315. For example, the breaching device 310 may be assembled with a tamping material 312, a pushing medium 314, and/or an explosive material 316 based on an intended application. With the breaching device 310 assembled, the cover 338 is secured in the closed position with or without the explosive material 316 disposed therein. When cover 338 is secured in the closed position without the explosive material 316 disposed therein, a cartridge 315 including the explosive material 316 may be inserted into the breaching device 310 before use, e.g., when an operator reaches a target to be breached. The cartridge 315 and/or the explosive material 316 of the cartridge 315 may be optimized for a particular breaching target onsite and then inserted into the breaching device 310. In some embodiments, a cartridge 315 may be removed from the assembled breaching device 310 and optimized onsite for a particular breaching target. In some embodiments, the cartridge 315 or the explosive material 316 may be optimized when a breaching target is reached and inserted into the breaching device 310. Optimizing the explosive material 316 may include changing the amount of explosive material 316 in the cartridge 315, e.g., increasing or decreasing. In certain embodiments, the cartridge 315 may be removed to defuse or disarm the breaching device 310 for later use.
[0091] When the cartridge 315 and/or the explosive material 316 is inserted in the breaching device 310, the breaching device 310 is secured to the breaching target with the cover 338 facing the breaching target. The cover 338 may include an adhesive layer to secure to the breaching target. In some embodiments, the breaching device 310 may be secured to the breaching target with other materials such as adhesive.
[0092] Certain modifications and improvements will occur to those skilled in the art upon reading the foregoing description. By way of example, the housing and body may share an identical length, without a protruding portion or cavity at either end of the device for interlocking with a second device. It should be understood that all such modifications and improvements have been omitted for the sake of conciseness and readability, but are properly within the scope of the following claims.
[0093] While several embodiments of the disclosure have been shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Any combination of the above embodiments is also envisioned and is within the scope of the appended claims. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope of the claims appended hereto.