A composite tubular member having an outer generally cylindrical member containing fibers oriented to resist internal and external pressure and provide low bending stiffness, and two inner areas of axial reinforcement located near the neutral axis of the composite tubular members containing fibers oriented...http://www.google.com/patents/US5913337?utm_source=gb-gplus-sharePatent US5913337 - Spoolable composite tubular member with energy conductors
