Patent ID: 7107921

Claim:
A flexible fluid containment vessel for the transportation and/or containment of cargo comprising a fluid or fluidisable material, said vessel comprising: an elongated flexible tubular structure having an interior and exterior and being comprised of fabric having a first circumference; means for rendering said tubular structure impervious; said tubular structure having a front end and a rear end; means for filling and emptying said vessel of cargo; wherein at least one of said front end or rear end is so formed so as to define an opening having a second circumference which is less than that of the first circumference; and clamping mechanism that includes a clamping device for closing said opening, said mechanism having a receiving portion in which said end is inserted between a ring portion having a radially extending member with a curved engaging surface which extends radially outward and a ring receiving surface having a corresponding geometry to said ring portion wherein said ring portion and said ring receiving surface remain rotationally fixed with respect to one another when an adjustable clamping force is exerted by the clamping mechanism clamping said end between said ring portion and said ring receiving surface thereby affixing said mechanism to said end and wherein said clamping device is disposed through an aperture in at least one of said ring portion and said ring receiving surface and which slidingly engages the at least one aperture in an axial direction.