Patent ID: 8859083
Filing Date: 2014-10-14
Classification: B29B,B29C,B29K,B29L,D03D,D10B,Y10T

Abstract:
1. A quasi-isotropic three-dimensional preform comprising: at least three individual woven elements braided with each other to form a preform skin, wherein each of said individual woven elements is a fabric strip formed by interweaving a plurality of warp and weft yarns or fibers, each woven element including two or more integrally woven stiffeners or walls in a direction perpendicular to the plane of the preform skin, wherein the at least three individual woven elements are braided with each other such that two integrally woven stiffeners from each of three individual woven elements form a hexagonal cell perpendicular on the preform skin, and wherein said two or more integrally woven stiffeners are formed from the individual woven elements.