Patent ID: 8846553
Filing Date: 2014-09-30
Classification: B29B,B29C,B29K,D03D,D10B,Y10T

Abstract:
1. An integrally woven preform with stiffeners in two or more directions constructed from a woven base fabric, said base fabric comprising: a first woven fabric; a second woven fabric; a third woven fabric; a plurality of yarns interwoven between said first woven fabric and said second woven fabric, wherein said plurality of yarns are interwoven over a region between said first fabric and said second fabric, and said first fabric is folded relative to said second fabric such that a first integral stiffener is formed in said preform; a plurality of yarns interwoven between said second woven fabric and said third woven fabric, wherein said plurality of yarns are interwoven over a region between said second fabric and said third fabric, and said third fabric is folded relative to said second fabric such that a second integral stiffener is formed in said preform; and wherein said first integral stiffener and/or said second integral stiffener is an integral off-axis stiffener that is oriented in a direction or angle other than 0 and +/−90 degrees from a direction aligned with warp or weft yarns or fibers, and perpendicular to the second fabric.