Patent ID: 8584608
Filing Date: 2013-11-19
Classification: B29D,B32B,Y10T

Abstract:
1. A method of making a protective system for a structural member, comprising: providing n number of concentric sleeves concentrically positioned about a common axis, said n number of concentric sleeves having void spaces therebetween, wherein said n is equal to 3, said n number of concentric sleeves comprises an inner sleeve, a middle sleeve, and an outer sleeve, wherein said outer sleeve comprises a polytetrafluoroethylene cloth layer, a first fiberglass cloth layer adjacent said polytetrafluoroethylene cloth layer, a polybenzimidazole cloth layer adjacent said fiberglass cloth layer, a para-aramid synthetic fibrous cloth layer adjacent said polybenzimidazole cloth layer, a second fiberglass cloth layer adjacent said para-aramid synthetic fibrous cloth layer, wherein said polytetrafluoroethylene cloth layer, said first fiberglass cloth layer, said polybenzimidazole cloth layer, said para-aramid synthetic fibrous cloth layer, and said second fiberglass cloth layer are stitched together; and stitching each of said n number of concentric sleeves together and to a structural member, said structural member having said common axis spanning said structural member longitudinally.