Patent ID: 7758276
Filing Date: 2010-07-20
Classification: B65D,Y10T

Abstract:
1. An adjoining expansion structure for coupling adjacent devices together in a coupling direction, each device having at least one groove which penetrates the device in the coupling direction and is aligned with a groove of the other device, the adjoining expansion structure comprising: at least one pair of first and second coupling fittings, each of the first and second coupling fittings being adapted for insertion into a respective one of a pair of aligned grooves of the adjacent devices, wherein said first and second coupling fittings are adapted to connectively engage one another in the coupling direction to couple the devices, each said coupling fitting comprising: a base having upper and lower ends in the coupling direction and first and second end sides; a hook movably mounted to the base on the first end side thereof so that the hook is projectable and retractable from the upper end in the coupling direction; a hook receiving portion disposed on the first end side of the base adjacent the lower end and adapted for receiving the hook of another said coupling fitting; first and second screw holes in the second end side of the base adjacent the upper and lower ends, respectively; a screw receiving plate having a third screw hole and moveably mounted to the base on the second end side thereof so as to be projectable and retractable from the upper end of the base in the coupling direction; and a screw; said first coupling fitting being aligned with said second coupling fitting such that: the hook of said first coupling fitting, in a projected state, engages the hook receiving portion of said second coupling fitting; in a projected state of the screw receiving plate of said first coupling fitting, the screw is threaded into the second screw hole of said second coupling fitting and the third screw hole of the screw receiving plate of said first coupling fitting; and in a retracted state of the screw receiving plate of said first coupling fitting, the screw is threaded into the first screw hole of said first coupling fitting and the third screw hole of the screw receiving plate of said first coupling fitting.