Patent ID: 8113600

Claim:
A storage shell comprising: a plurality of sidewalls each extending between two others of the plurality of sidewalls to collectively define a chamber therebetween, wherein the plurality of sidewalls create a plurality of intersection lines each being defined along a boundary between two of the plurality of sidewalls; and a plurality of rails each intersecting and radially extending away from a different corresponding one of the plurality of intersection lines relative to a center of the storage shell, wherein: each of the plurality of rails is formed with a Y-shaped cross-section, each rail extends away from an exterior surface of the storage shell, and each rail comprises a primary flange extending from a respective intersection line, a first auxiliary leg and a second auxiliary leg, the first auxiliary and the second auxiliary leg extending at an angle with respect to each other to partially define the Y-shaped cross-section, the first auxiliary legs defining a first rim extending around one of the plurality of sidewalls and being larger than an outer perimeter of the one of the plurality of sidewalls such that when the storage shell is stacked on an adjacent substantially similar storage shell, one rail of the plurality of rails on the storage shell nests with a rail on the adjacent substantially similar storage shell.