Patent ID: 8646641
Filing Date: 2014-02-11
Classification: B65D

Abstract:
1. A tank which can store pressurised fluids, the tank comprising: a vessel for receiving and storing a pressurised fluid; and a reinforcing structure for the vessel, the reinforcing structure located externally of the vessel; wherein the vessel has a generally quadrilateral shape in plan view, a base which is generally dish-shaped with an outlet located in a position which facilitates discharge of the fluid from the vessel and a generally dish-shaped top; and wherein the base and the top of the vessel are each convex and have a shape which corresponds to part of a surface of a sphere, wherein the base has a continuous curvature from the outlet to an entire perimeter of the base, to resist deformation under applied fluid pressure loading, and wherein a radius of the curvature has a geometric centre located above the vessel.