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(11) | EP 1 582 658 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Collapsible structure |
| (57) The present invention relates to a collapsible structure having a frame. The frame
includes at least first, second, third, and fourth segments sequentially and hingedly
connected to one another allowing the frame to collapse and expand. The frame also
includes a first hinge mechanism interconnecting the first and second segments, a
second hinge mechanism interconnecting the second and third segments, and a third
hinge mechanism interconnecting the third and fourth segments.
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