Projectile shield with enhanced projectile rebound/ricochet
A ballistic shield has a front “bulletproof” ballistic fabric layer with an elastic layer situated behind, such that when a projectile strikes the ballistic fabric layer, the layers yield rearwardly, with the elastic layer then rebounding the projectile. The rebounded projectile thereby serves as a hazard (or at least a distraction) to the shooter. The elastic layer may be provided as one or more inflatable sublayers, allowing the ballistic shield to be rapidly inflated for use, and otherwise folded for storage and transport.
1. A ballistic shield including:
a. a ballistic textile layer,
b. an elastic layer:
(1) affixed to the ballistic textile layer,
(2) configured to reversibly convert between:
(a) an inflated state wherein the elastic layer contains a compressible fluid therein, whereby the ballistic shield:
i. elastically deflects when the ballistic textile layer is struck by a projectile, and
ii. thereafter at least substantially returns to its pre-strike shape, and
(b) a collapsed state wherein the elastic layer:
i. contains lesser fluid than, and
ii. has lesser volume than,
when in the inflated state.
2. The ballistic shield of claim 1 wherein the elastic layer includes arrayed cells:
a. having flexible cell walls,
b. being configured to contain a compressible fluid, and
c. in fluid communication with each other.
3. The ballistic shield of claim 2 wherein the elastic layer includes two or more adjoining cellular sublayers, each sublayer having the arrayed cells therein.
4. The ballistic shield of claim 3 wherein the arrayed cells within each sublayer are adjoined.
5. The ballistic shield of claim 4 wherein the arrayed cells within each sublayer are tessellated.
6. The ballistic shield of claim 3 wherein:
a. the cells of the cellular sublayers contain a compressible fluid, and
b. the compressible fluid of the cells of the cellular sublayer closest to the ballistic textile layer is at a lower pressure than the compressible fluid of the cells of the cellular sublayer furthest from the ballistic textile layer.
7. The ballistic shield of claim 2 wherein the cells of each cellular sublayer are offset from the cells of each adjoining cellular sublayer.
8. The ballistic shield of claim 2 wherein the cells within each cellular sublayer are in fluid communication with a filling means for filling the cells with fluid.
9. The ballistic shield of claim 2 wherein the cells are:
selectively connected to a source of compressed fluid via a remotely-controllable valve.
10. The ballistic shield of claim 2 wherein:
a. the cells are at least partially filled with a compressible fluid, and
b. the ballistic shield is situated to obstruct at least a major portion of a portal.
11. The ballistic shield of claim 2 folded adjacent the border of a portal, whereby filling the cells with a compressible fluid unfolds the ballistic shield to at least partially block the portal.
12. The ballistic shield of claim 2 folded within a container having an opening defined therein, whereby filling the cells with a compressible fluid unfolds the ballistic shield to extend from the opening.
13. The ballistic shield of claim 1 further including a damping layer between the ballistic textile layer and the elastic layer, the damping layer including one or more cells containing dilatant.
14. A ballistic shield including:
a. a ballistic textile layer,
b. an elastic layer:
(1) affixed to the ballistic textile layer, and
(2) including two or more cellular sublayers, each cellular sublayer including arrayed cells wherein each cell:
(a) has elastic cell walls,
(b) is at least partially filled with compressible fluid.
15. The ballistic shield of claim 14 wherein the compressible fluid of the cells of the cellular sublayer closest to the ballistic textile layer is at a lower pressure than the compressible fluid of the cells of the cellular sublayer furthest from the ballistic textile layer.
16. The ballistic shield of claim 14 wherein the cells of each cellular sublayer are offset from the cells of each adjoining cellular sublayer.
17. The ballistic shield of claim 14 situated within a portal.
18. A ballistic shield including:
a. a ballistic textile layer,
b. an elastic layer affixed to the ballistic textile layer, the elastic layer including two or more adjoining cellular sublayers of tessellated cells:
(1) having flexible cell walls, and
(2) being in fluid communication with a compressible fluid source.
19. The ballistic shield of claim 18 wherein the cells of each cellular sublayer are offset from the cells of each adjoining cellular sublayer.