Patent ID: 8557358
Filing Date: 2013-10-15
Classification: B29D,B32B,Y10T

Abstract:
1. A protective system for a structural member comprising: n number of concentric sleeves comprising 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 the 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.