Patent ID: 8087536
Filing Date: 2012-01-03
Classification: B29C,B29K,B29L,B66F,F15B,F16F,F16J,F16L,F17C,Y10T

Abstract:
1. A fibre reinforced pressurizable structure comprising an integrally formed gas or fluid-tight body having a continuous outer circumferential surface with a rotation-symmetrical axis that terminates in axial ends, the body being overwound as an isotensoide with one or more fibre filaments, the one or more fibre filaments having a longitudinal axis defined along their length, wherein radius of the body outer surface varies with respect to the rotation-symmetrical axis, such that said body outer surface defines at least one concave surface section spaced apart from the axial ends, wherein each concave surface section has a local minimum radius, and the outer surface further defines at least one convex surface section spaced apart from the axial ends, wherein each convex surface section has a local maximum radius, wherein the at least one concave surface section about its entire outer surface spanning its local minimum radius is continuously overwound with the one or more fibre filaments.