| 主权项 |
1. A container capable of being coupled horizontally and vertically at a time to form a stackable container set with a plurality of containers of similar shape, the container comprising:
a main body having an opening and a receiving space defined therein; and a cover for covering the opening of the main body, wherein the main body has a plurality of ribs protruding along an edge portion of a lower surface of the main body, and an upwardly recessed portion defined between the ribs, wherein the cover has, on an upper surface thereof, at least two or more coupling grooves, each of said coupling grooves having a closed loop shape into which at least one of said plurality of ribs of a main body of another container is inserted, the shape of each one of said plurality of ribs corresponding to at least a portion of the closed loop shape of the coupling groove, the coupling grooves being spaced apart from each other with a boundary area defined there-between, wherein the cover has an airtight groove of closed loop shape defined in an edge portion of a lower surface of the cover in a size and shape which allows the coupling grooves to be enclosed within a circumferential boundary of the airtight groove, wherein an upper edge of the opening of the main body is configured to be inserted into the airtight groove, and wherein the boundary area between two adjacent coupling grooves of a cover of another container of similar shape is inserted into the upwardly recessed portion of the main body of the container, or adjacent edge portions of covers of two containers which are disposed adjacent to each other are inserted into the upwardly recessed portion of the main body of the container. |
