Patent ID: 9050756
Filing Date: 2015-06-09
Classification: A42B,A42C,B29C

Abstract:
1. A method of fabricating a helmet characterized by a hemispherical shape, the hemispherical shape having a center point and a central axis that passes through the center point, the method comprising: (a) providing a helmet preform subassembly comprising at least two layers of fabric wherein the at least two layers of fabric are impregnated with a polymer resin, the helmet preform subassembly having a shape comprising m arms arranged about the center point, each arm having at least one width W (b) stitching together side edges of the arms of the perform subassembly which are adjacent to each other to form a stitched perform subassembly; (c) stacking a plurality of stitched preform subassemblies to form a stack; and (d) compression molding the stack.