Adjustable tray for video display terminals

Claim 1

An expandable tray for mounting on the top of a video display terminal having either a top vent or a side vent for exhausting air from its motor comprising, in combination, two pieces, each of said pieces including a shelf, a back, and a side, interconnecting means on said pieces for slidably closing or expanding said pieces, said interconnecting means including a guideway on an upper edge of said back of one of said pieces, a guideway on a front edge of said shelf of one of said pieces, an upper edge of said back on the other of said pieces slidable in said upper guideway, a front edge of said shelf on the other of said pieces slidable in said front guideway, whereby said two backs and said two shelves are slidable with respect to each other, and a stepped protuberance on each of said pieces for positioning said tray upon said video display terminal, each of said stepped protuberances including a pair of steps, a first step and a second step, in which each of said steps has a vertical riser and a horizontal tread, wherein said vertical riser of said first step of said one of said pieces is integral with said shelf of said one of said pieces, said horizontal tread of said second step of said one of said pieces is integral with said side of said one of said pieces, said vertical riser of said first step of said other of said pieces is integral with said shelf of said other of said pieces, and said horizontal tread of said second step of said other of said pieces is integral with said side of said other of said pieces.