Folding table 2

During folding/unfolding process it is not closed kinematic chain.
STEP files of this video:
http://www.mediafire.com/file/uw3wbc0px7j48gy/FoldingTable2STEP.zip
Inventor files:
http://www.mediafire.com/file/1tb0pq0d8syuht3/FoldingTable2Inv.zip