Elastic storage tank and method for making the same

Claim 1

An elastic storage tank for fluid or fluid-like material comprising; a pair of substantially identical end tank sections, each being formed from a single blank of a fiber-reinforced elastomer, each end tank section including upper and lower wall portions, each being defined by a pair of panels formed by folding the blank along a longitudinal fold line, each end tank section including side wall portions extending between and being joined with said upper and lower wall portions, said side wall portions being defined by elongate end panels which are formed by folding one of the upper or lower wall-defining panels along transverse fold lines adjacent opposite ends of said last-mentioned wall-defining panel, each side wall portion having a triangular flap, and the other of said upper and lower wall portions having a pair of generally triangular shaped flaps, each projecting therefrom and overlapping and being sealingly secured to one of said flaps on a side wall portion, said one upper or lower wall portions having arcuate edge portions, each located between a flap on a side wall portion and a flap on the other upper or lower wall portion, a pair of formed arcuate attachment members, each being sealingly secured to the lapped flaps on a side wall portion and on the other of said upper or lower wall portions, and to an arcuate edge portion of said one of the upper or lower wall portions, and means sealingly securing the end tank sections together.