| 主权项 |
1. A package of returnable and reusable type, comprising:
a plurality of confining elements mutually assembled in a removable manner and defining a holding volume and having at least a first interfacing surface for contacting an interfacing surface of another package when two packages are (a) stacked, (b) flanked, or (c) stacked and flanked, the confining elements being effective (a) to be assembled around an item to be transported from a first location to a second location, (b) when the item reaches the second location, to be disassembled from around the item, and (c) to be subsequently reassembled around a second item to be transported from a third location to a fourth location; grip means provided on said first interfacing surface, said grip means defining a first directrix and a second directrix, said first directrix comprising a first curvilinear stretch developing along a first path, said second directrix comprising a second curvilinear stretch developing along a second path, said first and second stretches being side by side, said first and second paths being (a) concentric circular paths or (b) concentric elliptic paths, each stretch being defined by a series of individual engagement protrusions which are separate from each other and which are spaced apart along said stretch, each engagement protrusion extending from said first interfacing surface, wherein the grip means are effective to permit a pair of said packages to be engaged via stacking or flanking and then to be lifted in engagement together without slipping relative to each other. |
