Patent ID: 8640911

Claim:
A modular case comprising: a plurality of case panels having a plurality of integral load-distributing panel ribs distributed throughout and across an entire surface area of each of said case panels; a plurality of case edge members having a plurality of load-distributing edge member ribs extending across the case edge members, the case edge members being connected to the case panels; and a plurality of corner pieces having a plurality of load-distributing corner piece ribs, the corner pieces being connected between the case edge members; wherein the case panels joined via the case edge members so as to align the edge member ribs and the panel ribs, and the case edge members and the corner pieces are joined to align the edge member ribs and the corner piece ribs, such that a plurality of substantially continuous, integral ribs are formed capable of distributing among the case panels, the case edge members, and the corner pieces forces acting on the modular case; wherein the case edge members include parting line edge members and the corner pieces include parting line corner pieces, the parting line edge members and the parting line corner pieces connected to define a base and a lid, the base and lid being joined at a parting line; and wherein the case edge members of the lid include first arrangements of protuberances arrayed in matching repeating arrangements with constant spacing, and at least the case edge members of the base disposed opposite the lid include second arrangements of protuberances arrayed in offset alignment with the first arrangements of protuberances such that the first and second protuberance arrangements are mutually interlockable for interlocked stacking of similar modular cases.