Maro Publications

Antiballistic Materials

Patent Abstracts

From 06/02/2014 through 2/11/2012

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Patent Abstracts

8. 8,287,987 
Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
 
Lyons et al of BAE Systems Tensylon H.P.M., Inc., North Carolina, developed a ballistic-resistant panel in which the entire panel or a strike-face portion thereof is formed of a plurality of sheets of high modulus high molecular weight polyethylene tape. The sheets of high modulus polyethylene tape can be in the form of cross-plied laminated layers of tape strips or a woven fabric of tape strips. The strips of UHMWPE tape include a width of at least one inch and a modulus of greater than 1400 grams per denier. The ballistic-resistant panel may include a backing layer of conventional high modulus fibers embedded in resin. A wide variety of adhesives were found acceptable for bonding the cross-plied layers of high modulus polyethylene tape together for forming the ballistic-resistant panels of the present invention. (RDC 11/1/2012)

7. 8,257,814 
Protective composite structures and methods of making protective composite structures
 
Bartus, Husman and Vaidya of the University of Alabama at Birmingham, Alabama, developed an antiballistic material consisting of a backing; a layer of structures, and  thermoplastic fiber binder.  The structures include ceramic and metal plates.  The long fiber (12 to 38 mm) include thermoplastic polyurethanes, polypropylene, nylon-based polymers, polystyrene, acrylonitrile butadiene styrene (ABS), styrene acrylonitrile (SAN), polyethersulphone (PES), polyetherimide (PEI), polyphenylene sulfide (PPS), polyetheretherketone (PEEK) and polyetherketone (PEK). (RDC 9/14/2012)

6. 8,256,019 
Composite ballistic fabric structures for hard armor applications
 
Ardiff et al of Honeywell International, New Jersey, developed a ballistic resistant composite useful in rigid armor applications consisting of a network of high tenacity fibers in a thermoplastic matrix material.  The resin is a thermoplastic polyurethane resin that is semi-crystalline at room temperature.  The high tenacity fibers have a tenacity of at least about 7 g/d. Prior to consolidation the polyurethane resin matrix material is in an aqueous medium. When dry, the polyurethane matrix material has a tensile modulus (at 100% elongation) of at least about 500 psi (3.45 MPa), a tensile modulus (at 300% elongation) of at least about 500 psi (3.45 MPa), and an ultimate tensile strength of at least about 2000 psi (13.78 MPa). The ballistic resistant composite material has improved ballistic properties. (RDC 9/5/2012)

5. 8,231,945 
Method for impact deflecting materials
 
Gintz et al of Intelligent Textiles, Inc., South Carolina, developed a low cost, light weight bullet proof material consisting of directionally aligned single walled carbon nanotubes in an epoxy resin composition.  It is nearly impervious to bullets fired at close range at all angles of incidence and does not deteriorate upon abrasion or when exposed to wide ranges of temperature and humidity.  When used used as a protective shield for a body armor vest. It protects the wearer from blunt trauma effects. (RDC 8/10/2012)

4. 8,211,814 
Protective armor panels
 
Pepka of Renton Coil Spring Company, Washington, developed protective armor panels consisting of a polymer sheet and oriented metal strips. (RDC 7/10/2012)

3. 8,186,505 
Expansible ballistic containment bag
 
Saucedo of Armorworks Enterprises, Arizona, adapted an expansible ballistic containment bag for safely storing weapons ammunition.  The containment bag includes a blast-resistant flexible body defining an ammunition storage compartment, and having an access opening to the storage compartment for receiving weapons ammunition.  A reinforcement webbing is attached to an outside of the flexible body, and incorporates an arrangement of spaced-apart longitudinal straps and spaced-apart lateral straps.  At least one of the spaced-apart longitudinal straps extends substantially from one end of the flexible body to an opposite end of the flexible body, and is substantially continuously affixed along its length to the outside of the flexible body.  At least two of the spaced-apart lateral straps substantial encircle the flexible body, and are substantially discontinuously affixed along their respective lengths to the containment bag. (RDC 5/31/2012)

2. 8,176,830 
Ballistic shield
 
Tan of Wright Materials Research, Ohio developed a ballistic shield for protection against up to 7.62.times.63 mm AP rounds (NIJ Level IV).  The ballistic shield is multiple layered and includes polymer foam, ceramic tiles, and a support structure fabricated from ballistic resistant fabric. Individual layers are bonded with adhesives and preferably wrapped with fabric.  Under the fabric cover of the exterior surface of the shield is a polymer foam layer that exhibits excellent blast impact resistance and blast attenuation properties as well as a hard ceramic or the like layer. The foam layer is preferably made from liquid crystal or semi-crystalline polymer to enhance fire resistance and provide enhanced ductility.  According to various preferred embodiments, the man-portable ballistic shield also incorporates a compact video system for viewing the front side of the ballistic shield to eliminate the transparent view port of current ballistic shields and protective foam about the periphery and on the rear surface thereof. (RDC 5/21/2012)

1. 8,132,494 
Ballistic resistant composite article having improved matrix system
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Nguyen, Lin and Lang of Honeywell, New Jersey, developed an impact resistant rigid composite consisting of a fibrous layer comprising a network of filaments dispersed in a rigid matrix comprising one or more thermosetting resins and one or more thermoplastic resins which preferably include one or more initiating/compatibilization agents.  (RDC 4/24/2012)

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Roger D. Corneliussen
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E-Mail: cornelrd@bee.net  

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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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** Date of latest addition; date of first entry is 4/24/2012.