US Patent 7389887 Portable foldable shelf

The present invention discloses a portable shelf including a pair of shelf plates each having two folding members pivotally connected with each other by inner edges, a pair of side frames pivotally connecting the two plates to form a rectangular body, and a folding arrangement including two connecting guiders spacedly extended from the inner edges of the upper folding member to the inner edges of the lower folding member, and two reinforcement sliders which are pivotally coupled with the bottom frame and slidably mounted along the connecting guiders respectively, adapted to fold the foldable shelf between an unfolded position and a folded position.