Abstract: A helmet shell is formed having an outer section of fibrous layers, a middle section of fibrous layers and an inner section of fibrous layers. The outer section layers contain high tenacity abrasive fibers in a resin matrix. The middle section layers contain high strength polyolefin fibers and are in the form of woven or knitted fabrics with a resin matrix. The inner section layers contain high strength polyolefin fibers and are in the form of non-woven fabrics with a resin matrix. The helmet is lightweight and resists penetration of rifle bullets.
Type:
Grant
Filed:
December 20, 2007
Date of Patent:
October 7, 2014
Assignee:
Honeywell International Inc.
Inventors:
Ashok Bhatnagar, Bradley L. Grunden, Brian D. Arvidson, Lori L. Wagner
Abstract: A foam pad structure for helmets comprising a hard foam layer and a soft foam layer wherein the hard foam layer and the soft foam layer contain holes or channels scattered throughout the hard foam layer and the soft foam layer in a pattern so as to scatter an incoming pressure wave. A method of mitigating an incoming pressure wave comprising creating through-holes or channels in a soft foam layer, creating through-holes or channels in a hard foam layer, placing the hard foam layer inside a helmet shell, and placing the soft foam layer on the hard foam layer.
Abstract: Multi-panel ballistic resistant articles formed from woven and/or non-woven fibrous panels, each panel including varying quantities of a polymeric composition based on the total weight of the fibers and the polymeric composition. The hybrid structures provide excellent ballistic penetration resistance while maintaining a low weight. The ballistic resistant articles may be strategically positioned to dial in different levels of desired ballistic resistance for various applications.
Type:
Application
Filed:
September 23, 2009
Publication date:
July 12, 2012
Inventors:
BRIAN D. ARVIDSON, David A. Hurst, Ashok Bhatnagar, Lori L. Wagner
Abstract: A boron carbide body having a graphite content in which the central portion of the body includes more graphite that the region surrounding the central portion and adjacent the exterior surface thereof, and a method for fabricating the boron carbide body.