Flexible multi-layered armor
AssigneeAllied-Signal Inc.
InventorsGary A. Harpell, Dusan C. Prevorsek, Hsin L. Li
Life of this patent
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Abstract
The present invention is a flexible impact resistant article comprising a plurality of prepreg packets. Each prepreg packet comprises at least about 2 prepreg layers. Each prepreg layer comprises a plurality of coplanar fibers embedded in a polymeric matrix. There is a means to maintain at least a portion of each prepreg packet in successive layers. The prepreg packets are unattached to each other over a portion of their adjacent areas, preferably over a substantial portion of their adjacent areas. The plurality of packets results in improved flexibility.
Claims14
A flexible impact resistant article comprising a plurality of prepreg packets having adjacent surfaces, where each prepreg packet comprises a composite comprising at least 4 prepreg layers, with each prepreg layer comprising an array of at least two adjacent coplanar fibrous elements, each element comprising a plurality of unidirectional fibers embedded in a polymeric matrix wherein the unidirectional fibers of adjacent layers are arranged at approximately 90.degree. to the fibers in the next layer and are up to eight inches in length, the adjacent elements being connected by the polymeric matrix, and a means to maintain at least a portion of adjacent prepreg packets in successive relative position, the prepreg packets being unattached to each other over a portion of their adjacent surfaces.
A flexible impact resistant article comprising a plurality of prepreg packets having adjacent surfaces, where each prepreg packet comprises a composite comprising at least 2 prepreg layers, with each prepreg layer comprising an array of at least two adjacent coplanar fibrous elements, each element comprising a plurality of unidirectional fibers embedded in a polymeric matrix wherein the unidirectional fibers of adjacent layers are arranged at approximately 90.degree. to the fibers in the next layer and are up to eight inches in length, the adjacent elements being connected by the polymeric matrix, and a means to maintain at least a portion of adjacent prepreg packets in successive relative position, the prepreg packets being unattached to each other over a portion of their adjacent surfaces.
Dependencies are inferred from the claim text.