# US 2009/0260512 A1 · Hard armor composite > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260512 A1 - Document ID: US20090260512A1 - Status: Published application - Kind: A1 - Application number: 12/456,746 - Filed: 2009-06-22 - Published: 2009-10-22 - Earliest claimed: 2003-09-17 - Assignees: Armorworks Enterprises LLC - Inventors: Andrew D. Park; Dave Park; Alexander J. Park; William J. Perciballi - Web page: https://patentgrep.com/patent/US20090260512A1 ## CPC - F41H 5/0435: {the additional layers being only fibre- or fabric-reinforced layers} - F41H 5/0464: {the additional layers being only fibre- or fabric-reinforced layers} - Y10T 428/249951: Including a free metal or alloy constituent - F41H: ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A hard armor composite includes a rigid facing and a ballistic fabric backing. The fabric backing is carried by the facing, and includes an array of bundled high-performance fibers. The fibers have a tensile strength greater than 7 grams per denier and a denier per filament ratio of less than 5.4. ## Claims ### Claim 1 A hard armor composite, comprising: (a) a rigid facing; (b) a lightweight ballistic fabric backing carried by said facing, and comprising an array of bundled high-performance fibers, said fibers having a tensile strength greater than 7 grams per denier and a denier per filament ratio of less than 5.4, and said fabric backing comprising a plurality of overlying fabric layers, and said fabric backing and said rigid facing having a combined thickness of less than 0.900-inches, and wherein a thickness of said fabric backing comprises greater than 60% of the combined thickness of said fabric backing and said rigid facing; (c) said hard armor composite having an areal density not greater than 5.1 psf; and (d) means for adhering said fabric backing to said facing, said means for adhering being selected from a group consisting of a polymer film, an epoxy adhesive, a polysulfide adhesive, a polyurethane adhesive, a phenolic adhesive, a polyester adhesive, a polyvinyl butyral adhesive, a polyolefin adhesive, and a vinyl ester adhesive. ### Claim 2 (depends on 1) A hard armor composite according to claim 1, wherein said fabric layers are laminated under heat and pressure to form a unitary ballistic structure. ### Claim 3 (depends on 1) A hard armor composite according to claim 1, wherein said facing is constructed of a material selected from the group consisting of ceramic, steel, glass, aluminum, titanium, and graphite. ### Claim 4 (depends on 1) A hard armor composite according to claim 1, wherein said high-performance fibers are selected from the group consisting of aramid, ultra-high molecular weight polyethylene (UHMWPE), poly{p-phenylene-2,6-benzobisoxazole} (PBO), and poly {diimidazo pyridinylene (dihydroxy)phenylene} (M5). ### Claim 5 (depends on 1) A hard armor composite according to claim 1, wherein said rigid facing comprising a generally flat, continuous monolithic plate. ### Claim 6 A hard armor composite, comprising: (a) a rigid facing; (b) a lightweight ballistic fabric backing carried by said facing, and comprising an array of bundled high-performance fibers, said fibers having a tensile strength greater than 7 grams per denier and a denier per filament ratio of less than 5.4, and said fabric backing comprising a plurality of overlying fabric layers, and said fabric backing and said rigid facing having a combined thickness of less than 0.900-inches, and wherein a thickness of said fabric backing comprises greater than 60% of the combined thickness of said fabric backing and said rigid facing; (c) said hard armor composite having an areal density not greater than 5.1 psf. ### Claim 7 (depends on 6) A hard armor composite according to claim 6, wherein said fabric layers are laminated under heat and pressure to form a unitary ballistic structure. ### Claim 8 (depends on 6) A hard armor composite according to claim 6, wherein said facing is constructed of a material selected from the group consisting of ceramic, steel, glass, aluminum, titanium, and graphite. ### Claim 9 (depends on 6) A hard armor composite according to claim 6, wherein said high-performance fibers are selected from the group consisting of aramid, ultra-high molecular weight polyethylene (UHMWPE), poly {p-phenylene-2,6-benzobisoxazole} (PBO), and poly {diimidazo pyridinylene (dihydroxy)phenylene} (M5). ### Claim 10 (depends on 6) A hard armor composite according to claim 6, wherein said rigid facing comprising a generally flat, continuous monolithic plate. ### Claim 11 A hard armor composite, comprising: (a) a ceramic facing; and (b) a lightweight ballistic fabric backing carried by said facing, and comprising an array of bundled high-performance fibers, said fibers having a tensile strength greater than 7 grams per denier and a denier per filament ratio of no more than 2.0, and said fabric backing comprising a plurality of overlying fabric layers, and said fabric backing and said ceramic facing having a combined thickness of less than 0.900-inches, and wherein a thickness of said fabric backing comprises greater than 60% of the combined thickness of said fabric backing and said rigid facing; and (c) said hard armor composite having an areal density not greater than 5.1 psf. ### Claim 12 (depends on 11) A hard armor composite according to claim 11, wherein said ceramic facing comprises a material selected from the group consisting of boron carbide, silicon carbide, titanium diboride, aluminum nitride, silicon nitride, sintered silicon carbide, sintered silicon nitride, and aluminum oxide. ### Claim 13 (depends on 11) A hard armor composite according to claim 11, and comprising means for adhering said fabric backing to said ceramic facing. ### Claim 14 (depends on 13) A hard armor composite according to claim 13, wherein said means for adhering comprises a polymer film. ### Claim 15 (depends on 13) A hard armor composite according to claim 13, wherein said means for adhering comprises an adhesive selected from the group consisting of an epoxy adhesive, a polysulfide adhesive, a polyurethane adhesive, a phenolic adhesive, a polyester adhesive, a polyvinyl butyral adhesive, a polyolefin adhesive, and a vinyl ester adhesive. ### Claim 16 (depends on 11) A hard armor composite according to claim 11, wherein said ceramic facing comprises a generally flat, continuous monolithic plate. ### Claim 17 (depends on 11) A hard armor composite according to claim 11, wherein said high-performance fibers are selected from the group consisting of aramid, ultra-high molecular weight polyethylene (UHMWPE), poly {p-phenylene-2,6-benzobisoxazole} (PBO), and poly {diimidazo pyridinylene (dihydroxy)phenylene} (M5). ### Claim 18 (depends on 11) A hard armor composite according to claim 11, wherein said fabric layers are laminated under heat and pressure to form a unitary ballistic structure.