IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0094851
(2011-04-27)
|
등록번호 |
US-8402876
(2013-03-26)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Edan Administration Services (Ireland) Limited
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
12 |
초록
▼
An armor uses optimally shaped ceramic cross-pellets and a matrix for containing the cross-pellets. The armor comprises front and back plates and an array of interlocking ceramic cross-pellets of repeating shape between front and back plates. Each cross-pellet may have a horizontal cross-section in
An armor uses optimally shaped ceramic cross-pellets and a matrix for containing the cross-pellets. The armor comprises front and back plates and an array of interlocking ceramic cross-pellets of repeating shape between front and back plates. Each cross-pellet may have a horizontal cross-section in the shape of a cross and comprises a center and four fingers projecting therefrom. Each cross-pellet in a non-peripheral portion of the array may be supported by fingers of other cross-pellets which may include two fingers from each of four other cross-pellets. The result is lightweight, composite hybrid structure. The dense, hard armor has good fracture toughness, hardness and a high capacity to absorb impacts for ballistic protection particularly suited to tactical ground vehicles. Valley spaced is minimized. A polymer resin may be situated in spaces between the ceramic cross-pellets and between the array and at least one of the back plate and front plate.
대표청구항
▼
1. A lightweight ballistic armor having a high capacity to dissipate kinetic energy from high-velocity projectiles, comprising: a front plate;an array of interlocking ceramic cross-pellets of repeating shape, each cross-pellet having a horizontal cross-section in the shape of a cross and comprising
1. A lightweight ballistic armor having a high capacity to dissipate kinetic energy from high-velocity projectiles, comprising: a front plate;an array of interlocking ceramic cross-pellets of repeating shape, each cross-pellet having a horizontal cross-section in the shape of a cross and comprising a center and four fingers projecting perpendicularly from the center, each cross-pellet in a non-peripheral portion of the array supported by eight fingers of four other cross-pellets including two fingers from each of the four other cross-pellets; anda back plate, the array disposed between the front and back plates. 2. The armor of claim 1, further comprising a polymer resin situated in spaces between the ceramic cross-pellets and between the array and at least one of the back plate and front plate. 3. The armor of claim 1, further comprising a flexible support structure disposed between the front and back plates for holding the array to the front and back plates. 4. The armor of claim 3, further including fasteners for joining the front and back plates through the support structure. 5. The armor of claim 3, wherein sides of each of the four fingers of each cross-pellet are arcuate so that the center and four fingers define a cylindrical cross-pellet missing four arcuate corner segments. 6. The armor of claim 1, wherein an outer face of the center and four fingers of each cross-pellet is convex. 7. The armor of claim 6, wherein the outer face is adjacent the front plate. 8. The armor of claim 1, wherein in non-peripheral portions of the array, for each cross-pellet, each finger adjoins fingers of two other cross-pellets. 9. The armor of claim 1, wherein the outer face of the center and four fingers of each cross-pellet is convex. 10. The armor of claim 1, wherein sides of each of the four fingers of each cross-pellet are straight so that the center and four fingers define a rectangular cross-pellet missing four corner segments. 11. The armor of claim 10, wherein open space between cross-pellets constitutes less than 1% of the volume of a cross-pellet. 12. The armor of claim 1, wherein the array includes open space between cross-pellets that constitutes less than 25% of the volume of a cross-pellet. 13. The armor of claim 1, wherein the array includes open space between cross-pellets of less than 5% of the volume of a cross-pellet. 14. The armor of claim 1, wherein the cross-pellet shape is such that the sides of the fingers which interlock with adjacent fingers of adjacent cross pellets have flat edges, thereby eliminating spaces between cross-pellets. 15. The armor of claim 1, wherein the open space comprises channels, thereby reducing the weight of the armor. 16. The armor of claim 1, wherein the ceramic cross-pellets are made from a composite of materials, the materials including at least two of alumina, boron carbide, boron nitride, silicon carbide, silicon nitride, and zirconium oxide. 17. The armor of claim 1, wherein for each cross-pellet, a diameter of the cross-pellet as measured from one end of a first finger to an opposite end of an oppositely situated finger exceeds a height of the cross-pellet. 18. The armor of claim 1, further comprising a shock absorbing layer disposed between the back plates the front plate includes a layer of ceramic cross-pellets embedded in a matrix. 19. The armor of claim 1, wherein the front plate includes a layer of ceramic cross-pellets arranged in a close-packed matrix. 20. The armor of claim 1, further comprising a high tensile strength fabric adhered to a back surface of the array of ceramic cross-pellets, the fabric comprising at least one of comprising woven carbon fabric, a layer of at least one of fiberglass, aramid fabric, metallic sheet, carbon or other fibers. 21. The fabric of claim 20, wherein the high-tensile strength fabric is made of polymeric threads selected from the group comprising aramid threads, polyester threads, synthetic threads, aramid fibers, ultra high resistance polyethylene fibers, thread fibers, and mixtures thereof. 22. The armor of claim 1, wherein the back plate and front plates are co-extensive. 23. The armor of claim 1, wherein the array includes a layer of ceramic cross-pellets arranged in a hexagonal, close-packed matrix. 24. The armor of claim 1, wherein the front plate includes a layer of geometric interlocking ceramic cross-pellets each with a plurality of flat surfaces. 25. The armor of claim 1, wherein the back plate is formed of a composite of materials and includes opposing panels filled with a resin impregnated matrix of stuffers. 26. The armor of claim 1, wherein the armor includes a plurality of attached front and back plates which together form a hinged sheet capable of being draped over a vehicle or other object to be protected. 27. A lightweight ballistic armor layer having a high capacity to dissipate kinetic energy from high-velocity projectiles, comprising: an array of interlocking ceramic cross-pellets of repeating shape, each cross-pellet having a horizontal cross-section in the shape of a cross and comprising a center and four fingers projecting from the center, each cross-pellet in a non-peripheral portion of the array supported by a multiplicity of fingers of four other cross-pellets, each cross-pellet having arcuate sides thereby defining valley space between adjacent cross-pellets, the valley space comprising less than 5% of a volume of a cross-pellet. 28. The lightweight ballistic armor layer of claim 27, wherein the valley space comprises less than 1% of the volume of the cross-pellet. 29. The lightweight ballistic armor layer of claim 27, wherein the each cross-pellet in the non-peripheral portion of the array is supported by two fingers from each of four other cross-pellets.
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