| 摘要 |
<p>A device for connecting each other three flat elements, lying on one single plane and connecting each with at least one edge against at least one edge of each of two other elements, wherein that the device is connected with a first flat element and is provided with at least two hook-shaped organs, wherein one hook-shaped organ cooperates with a snap-on contact connected with the second flat element and the second hook-shaped organ cooperates with a snap-on contact connected with the third flat element and thereby the hook-shaped organs are movable between a first position, where the flat elements are released from each other, and a second position where the elements are pressed against each other with their common edges.</p> |
