US Patent 7523900 Movable book and table holder

A multilayer tray system especially for a hospital bed having side rails includes a first rectangular structure having hooks along each lateral edge for being supported on the top edge of the side rails, the first rectangular structure has cavities formed in the upper surface for disposition of such items as a tissue box, drinking glass or miscellaneous items. A second rectangular tray is selectively connected to the first rectangular support. The second tray has a planar upper surface for providing a writing surface thereon. The tray is aligned relative to the rectangular structure and slidably maintained on the rectangular structure by means of a pair of parallel brackets extending from the lower surface of the tray.