A casing for computer equipment, the casing comprising first and second leaves for mounting the computer equipment, the leaves being hinged together so as to be movable between a folded position in which the first leaf overlies the second, and an open position; and a base to which the leaves...http://www.google.com/patents/US5742475?utm_source=gb-gplus-sharePatent US5742475 - Computing equipment casing having hinged, spring loaded and sliding leaves 
