Patent ID: 8186535

Claim:
A storage device for retaining fluids, the storage device comprising: (a) a first container having an interior for retaining a first fluid, the first container having a first end and a second end; (b) a first end container for retaining a second fluid and isolating the second fluid from the first fluid, the first end container at least partially received within a portion of the first end of the first container, wherein the first end container is generally annular in shape to define an interior face disposed within the interior of the first container, an exterior face opposite the interior face, a through-hole extending between the interior face and the exterior face, an inner exterior surface defined by the through-hole and extending between the interior face and the exterior face, and an outer exterior surface opposite the inner exterior surface and extending between the interior face and the exterior face, and wherein the through-hole is in fluid communication with the interior of the first container; and (c) a second end container for retaining the second fluid, wherein the second end container is generally annular in shape and is at least partially received within a portion of the second end of the first container.